Yuji Higo

J-GLOBAL         Last updated: Apr 23, 2019 at 11:00
 
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Name
Yuji Higo
E-mail
higospring8.or.jp
Affiliation
Japan Synchrotron Radiation Research Institute
Research funding number
10423435
ORCID ID
0000-0002-4221-8783

Research Areas

 
 

Published Papers

 
Greaux Steeve, Irifune Tetsuo, Higo Yuji, Tange Yoshinori, Arimoto Takeshi, Liu Zhaodong, Yamada Akihiro
NATURE   565(7738) 218-+   Jan 2019   [Refereed]
Matsushita Masafumi, Masuda Kohtaro, Waki Ryohei, Ohfuji Hiroaki, Yamasaki Michiaki, Kawamura Yoshihito, Higo Yuji
JOURNAL OF ALLOYS AND COMPOUNDS   784 1284-1289   May 2019   [Refereed]
Kulik Eleonora, Nishiyama Norimasa, Higo Yuji, Gaida Nico A., Katsura Tomoo
JOURNAL OF THE AMERICAN CERAMIC SOCIETY   102(5) 2251-2256   May 2019   [Refereed]
Tsujino Noriyoshi, Yoshino Takashi, Yamazaki Daisuke, Sakurai Moe, Sun Wei, Xu Fang, Tange Yoshinori, Higo Yuji
AMERICAN MINERALOGIST   104(4) 588-594   Apr 2019   [Refereed]
Takayuki Ishii, Rong Huang, Hongzhan Fei, Iuliia Koemets, Zhaodong Liu, Fumiya Maeda, Liang Yuan, Lin Wang, Dmitry Druzhbin, Takafumi Yamamoto, Shrikant Bhat, Shrikant Bhat, Robert Farla, Takaaki Kawazoe, Noriyoshi Tsujino, Eleonora Kulik, Eleonora Kulik, Yuji Higo, Yoshinori Tange, Tomoo Katsura
Scientific Reports   8    Dec 2018
© 2018 The Author(s). The 660-km seismic discontinuity, which is a significant structure in the Earth's mantle, is generally interpreted as the post-spinel transition, as indicated by the decomposition of ringwoodite to bridgmanite + ferropericlas...
A. Yamada, A. Yamada, M. Harada, A. Masuno, A. Masuno, A. Masuno, A. Masuno, K. Yamanaka, Y. Higo, S. Yoshida, S. Yoshida, T. Ohta, J. Matsuoka, J. Matsuoka
Journal of Non-Crystalline Solids   499 25-31   Nov 2018
© 2018 Elsevier B.V. A 41.6MgO-27.1B2O3-31.2SiO2glass was synthesized by container-less levitation method. B K-edge X-ray absorption near edge structure (XANES) spectroscopy was used to quantify the coordination of boron in the as-made glass, resu...
Gustavo A. Rosales-Sosa, Atsunobu Masuno, Atsunobu Masuno, Atsunobu Masuno, Atsunobu Masuno, Yuji Higo, Yasuhiro Watanabe, Hiroyuki Inoue
Journal of the American Ceramic Society   101(11) 5030-5036   Nov 2018   [Refereed]
© 2018 The American Ceramic Society In oxide glasses, “hardness” and “damage-tolerance” are usually competing attributes. The main reason for this is that hard glasses usually have closely packed structures compared to those of damage-resistant gl...
Masayuki Nishi, Masayuki Nishi, Jun Tsuchiya, Jun Tsuchiya, Takeshi Arimoto, Sho Kakizawa, Takehiro Kunimoto, Yoshinori Tange, Yuji Higo, Tetsuo Irifune, Tetsuo Irifune
Physics and Chemistry of Minerals   45(10) 1-7   Jun 2018   [Refereed]
© 2018 Springer-Verlag GmbH Germany, part of Springer Nature Phase H (MgSiO4H2) is the high-pressure form of dense hydrous silicate that could deliver surface water into the lower mantle. In this study, we determined the thermal equations of the s...
Xi Li, Xi Li, Rian Dippenaar, Ayumi Shiro, Takahisa Shobu, Yuji Higo, Mark Reid, Mark Reid, Hiroshi Suzuki, Koichi Akita, Ken Ichi Funakoshi, Klaus Dieter Liss, Klaus Dieter Liss, Klaus Dieter Liss, Klaus Dieter Liss, Klaus Dieter Liss
Intermetallics   102 120-131   Nov 2018
© 2018 Lattice strain evolution during deformation processing of Ti-Al alloys at high temperature is important in terms of its microstructural evolution and microstructural stability. It is shown here that careful evaluation of lattice parameters ...
Tomohiro Ohuchi, Xinglin Lei, Yuji Higo, Yoshinori Tange, Takeshi Sakai, Kiyoshi Fujino
Contributions to Mineralogy and Petrology   173(10)    Oct 2018   [Refereed]
© 2018, Springer-Verlag GmbH Germany, part of Springer Nature. The role of aqueous fluid in fracturing in subducting slabs was investigated through a series of deformation experiments on dunite that was undersaturated (i.e., fluid-free) or saturat...
Shigeaki Ono, Takumi Kikegawa, Yuji Higo
American Mineralogist   103 1512-1515   Sep 2018
© 2018 Walter de Gruyter GmbH, Berlin/Boston. The reaction boundary between high-pressure clinoenstatite and wadsleyite + stishovite in MgSiO3was investigated using a multi-anvil high-pressure apparatus and synchrotron X-ray diffraction. Experimen...
Yu Nishihara, Tomohiro Ohuchi, Takaaki Kawazoe, Yusuke Seto, Genta Maruyama, Yuji Higo, Ken ichi Funakoshi, Ken ichi Funakoshi, Yoshinori Tange, Tetsuo Irifune
Earth and Planetary Science Letters   490 151-160   May 2018
© 2018 Elsevier B.V. Shear and uniaxial deformation experiments on hexagonal close-packed iron (hcp-Fe) was conducted using a deformation-DIA apparatus at a pressure of 13–17 GPa and a temperature of 723 K to determine its deformation-induced crys...
Artem D. Chanyshev, Artem D. Chanyshev, Konstantin D. Litasov, Konstantin D. Litasov, Sergey V. Rashchenko, Sergey V. Rashchenko, Asami Sano-Furukawa, Hiroyuki Kagi, Takanori Hattori, Anton F. Shatskiy, Anton F. Shatskiy, Anna M. Dymshits, Igor S. Sharygin, Yuji Higo
Crystal Growth and Design   18 3016-3026   May 2018
© 2018 American Chemical Society. The high-temperature structural properties of solid benzene were studied at 1.5-8.2 GPa up to melting or decomposition using multianvil apparatus and in situ neutron and X-ray diffraction. The crystal structure of...
Keisuke Niwase, Mititaka Terasawa, Shin Ichi Honda, Masahito Niibe, Tomohiko Hisakuni, Tadao Iwata, Yuji Higo, Takeshi Hirai, Toru Shinmei, Hiroaki Ohfuji, Tetsuo Irifune
Journal of Applied Physics   123    Apr 2018
© 2018 Author(s). The super hard material of "compressed graphite" (CG) has been reported to be formed under compression of graphite at room temperature. However, it returns to graphite under decompression. Neutron-irradiated graphite, on the othe...
Masatoshi Kanazawa, Liang Li, Toshihiro Kuzuya, Keiki Takeda, Shinji Hirai, Yuji Higo, Toru Shinmei, Tetsuo Irifune, Chihiro Sekine
Journal of Alloys and Compounds   736 314-321   Mar 2018
© 2017 Elsevier B.V. Detailed pressure-temperature phase diagrams of heavy lanthanide sesquisulfides Ln2S3(Ln = Yb and Lu) have been investigated by in-situ x-ray diffraction experiments under high pressure and high temperature using synchrotron r...
Mititaka Terasawa, Shin ichi Honda, Keisuke Niwase, Masahito Niibe, Tomohiko Hisakuni, Tadao Iwata, Yuji Higo, Toru Shinmei, Hiroaki Ohfuji, Tetsuo Irifune
Diamond and Related Materials   82 132-136   Feb 2018
© 2018 Elsevier B.V. Highly oriented pyrolytic graphite (HOPG) is a unique source material for the synthesis of new types of diamond. It can transform to layered nano-polycrystalline diamond (NPD) under static high pressure and high temperature (H...
Daisuke Yamazaki, Eiji Ito, Takashi Yoshino, Noriyoshi Tsujino, Akira Yoneda, Hitoshi Gomi, Jaseem Vazhakuttiyakam, Moe Sakurai, Youyue Zhang, Yuji Higo, Yoshinori Tange
Comptes Rendus - Geoscience      Jan 2018
© 2018 We extended the attainable pressure of the Kawai-type multianvil apparatus to 71.3 GPa and 120.3 GPa at room temperature by equipping it with tungsten carbide (WC) and sintered diamond (SD) cubic anvils, respectively. In the experiments wit...
S. Iikubo, K. Shimoyama, S. Kawano, M. Fujii, K. Yamamoto, M. Matsushita, T. Shinmei, Y. Higo, H. Ohtani
AIP Advances   8    Jan 2018
© 2018 Author(s). By combining theoretical predictions and in-situ X-ray diffraction under high pressure, we found a novel stable crystal structure of Li3PS4under high pressures. At ambient pressure, Li3PS4shows successive structural transitions f...
J. Yamamoto, T. Yoshino, D. Yamazaki, Y. Higo, Y. Tange, J. Torimoto
Journal of Materials Science      Jan 2018
© 2018, Springer Science+Business Media, LLC, part of Springer Nature. We used in situ measurements of X-ray diffraction patterns in a cubic multi-anvil press at pressures up to 3 GPa and at 500–1300 K to examine thermal expansion and its pressure...
Yuji Higo, Tetsuo Irifune, Ken Ichi Funakoshi
Review of Scientific Instruments   89    Jan 2018
© 2017 Author(s). A new pulse-echo interferometry system has been developed for measurements of sound velocity at simultaneous high pressure and temperature corresponding to those of the Earth's lower mantle, using synchrotron X-ray techniques at ...
Anna M. Dymshits, Konstantin D. Litasov, Konstantin D. Litasov, Anton Shatskiy, Anton Shatskiy, Artem D. Chanyshev, Artem D. Chanyshev, Ivan V. Podborodnikov, Ivan V. Podborodnikov, Yuji Higo
Physics and Chemistry of Minerals   45 51-58   Jan 2018
© 2017, Springer-Verlag GmbH Germany. The phase relations and equation of state of (Mg0.08Fe0.92)O magnesiowüstite (Mw92) have been studied using the Kawai-type high-pressure apparatus coupled with synchrotron radiation. To determine the phase bou...
Tomoaki Kubo, Mari Kono, Masahiro Imamura, Takumi Kato, Seiichiro Uehara, Tadashi Kondo, Yuji Higo, Yoshinori Tange, Takumi Kikegawa
Physics of the Earth and Planetary Interiors   272 50-57   Nov 2017
© 2017 Elsevier B.V. We conducted high-pressure experiments in plagioclase with different anorthite contents at 18–27 GPa and 25–1750 °C using both a laser-heated diamond anvil cell and a Kawai-type multi-anvil apparatus to clarify the formation c...
Takayuki Ishii, Daisuke Yamazaki, Noriyoshi Tsujino, Fang Xu, Zhaodong Liu, Takaaki Kawazoe, Takafumi Yamamoto, Dmitry Druzhbin, Lin Wang, Yuji Higo, Yoshinori Tange, Takashi Yoshino, Tomoo Katsura
High Pressure Research   37 507-515   Oct 2017
© 2017 Informa UK Limited, trading as Taylor & Francis Group. We have expanded the pressure ranges at room and high temperatures generated in a Kawai-type multi-anvil apparatus (KMA) using tungsten carbide (WC) anvils with a high hardness of Hv=...
Zhaodong Liu, Zhaodong Liu, Masayuki Nishi, Takayuki Ishii, Hongzhan Fei, Nobuyoshi Miyajima, Tiziana Boffa Ballaran, Hiroaki Ohfuji, Takeshi Sakai, Lin Wang, Svyatoslav Shcheka, Takeshi Arimoto, Yoshinori Tange, Yuji Higo, Tetsuo Irifune, Tomoo Katsura
Journal of Geophysical Research: Solid Earth   122 7775-7788   Oct 2017
©2017. American Geophysical Union. All Rights Reserved. Phase relations in the system MgSiO3-Al2O3were investigated at pressures of 27–45 GPa and temperatures of 1700, 2000, and 2300 K using sintered diamond and tungsten carbide anvils in a multia...
Tomohiro Ohuchi, Xinglin Lei, Hiroaki Ohfuji, Yuji Higo, Yoshinori Tange, Takeshi Sakai, Kiyoshi Fujino, Tetsuo Irifune, Tetsuo Irifune
Nature Geoscience   10 771-775   Oct 2017
© 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved. The occurrence of intermediate-depth and deep earthquakes at depths greater than 60 km in subducting slabs has long puzzled geoscientists. These earthquakes require...
Longjian Xie, Akira Yoneda, Takashi Yoshino, Daisuke Yamazaki, Noriyoshi Tsujino, Yuji Higo, Yoshinori Tange, Tetsuo Irifune, Toru Shimei, Eiji Ito
Review of Scientific Instruments   88    Sep 2017
© 2017 Author(s). We developed methods to use synthesized boron-doped diamond (BDD) as a heater in a multi-anvil high-pressure apparatus. The synthesized BDD heater could stably generate an ultra-high temperature without the issues (anomalous melt...
Artem D. Chanyshev, Artem D. Chanyshev, Konstantin D. Litasov, Konstantin D. Litasov, Anton F. Shatskiy, Anton F. Shatskiy, Igor S. Sharygin, Igor S. Sharygin, Yuji Higo, Eiji Ohtani, Eiji Ohtani
Physics of the Earth and Planetary Interiors   270 29-39   Sep 2017
© 2017 Elsevier B.V. We have examined the decomposition of naphthalene, anthracene, pyrene and coronene at high pressures and temperatures. Experiments were performed using in situ X-ray diffraction in multianvil apparatus at the SPring-8 synchrot...
Tomohiro Ohuchi, Takaaki Kawazoe, Takaaki Kawazoe, Yuji Higo, Akio Suzuki
Contributions to Mineralogy and Petrology   172    Aug 2017
© 2017, Springer-Verlag GmbH Germany. Deformation experiments on olivine aggregates were performed under hydrous conditions using a deformation-DIA apparatus combined with synchrotron in situ X-ray observations at pressures of 1.5–9.8 GPa, tempera...
Shigeaki Ono, Takumi Kikegawa, Yuji Higo
Physics and Chemistry of Minerals   44 425-430   Jun 2017
© 2017, The Author(s). The phase boundary between akimotoite and ringwoodite + stishovite in MgSiO3was determined using a multi-anvil high-pressure apparatus and synchrotron X-ray radiation. The phase relation was determined by observing the recov...
Konstantin D. Litasov, Konstantin D. Litasov, Anton Shatskiy, Anton Shatskiy, Pavel N. Gavryushkin, Pavel N. Gavryushkin, Altyna E. Bekhtenova, Peter I. Dorogokupets, Boris S. Danilov, Yuji Higo, Abdirash T. Akilbekov, Talgat M. Inerbaev
Physics of the Earth and Planetary Interiors   265 82-91   Apr 2017
© 2017 Elsevier B.V. Pressure–volume–temperature relations have been measured to 29 GPa and 1673 K for CaCO3aragonite using synchrotron X-ray diffraction with a multianvil apparatus at the ‘SPring-8’ facility. A least-squares fit of the room-tempe...
Shigeaki Ono, Takumi Kikegawa, Yuji Higo, Yoshinori Tange
Physics of the Earth and Planetary Interiors   264 1-6   Mar 2017
© 2017 The Authors The phase boundary between coesite and stishovite in SiO2was determined over the range of 1200–1700 K using a multi-anvil high-pressure apparatus combined with the synchrotron X-ray diffraction technique. The stability of each p...
Daisuke Yamazaki, Noriyoshi Tsujino, Akira Yoneda, Eiji Ito, Takashi Yoshino, Yoshinori Tange, Yuji Higo
Earth and Planetary Science Letters   459 238-243   Feb 2017
© 2016 Elsevier B.V. Knowledge of grain growth rate of ε-iron can put constraint on estimation of the grain size in the inner core. We determined grain growth rate of ε-iron at ∼55 GPa and 1200–1500 K by means of in-situ X-ray diffraction observat...
Takaaki Kawazoe, Takaaki Kawazoe, Yu Nishihara, Tomohiro Ohuchi, Nobuyoshi Miyajima, Genta Maruyama, Genta Maruyama, Yuji Higo, Ken ichi Funakoshi, Ken ichi Funakoshi, Tetsuo Irifune, Tetsuo Irifune
Earth and Planetary Science Letters   454 10-19   Nov 2016
© 2016 Elsevier B.V. Creep strength of ringwoodite is important for understanding complicated patterns of the mantle convection in and around the mantle transition zone. To determine the creep strength of ringwoodite, we expanded pressure–temperat...
Takashi Yoshino, Daisuke Yamazaki, Yoshinori Tange, Yuji Higo
Review of Scientific Instruments   87    Oct 2016
© 2016 Author(s). To determine the anelastic properties of materials of the Earth's interior, a short-period cyclic loading system was installed for in situ X-ray radiographic observation under high pressure to the multi-anvil deformation DIA pres...
Keisuke Nishida, Akio Suzuki, Hidenori Terasaki, Yuki Shibazaki, Yuji Higo, Souma Kuwabara, Yuta Shimoyama, Moe Sakurai, Masashi Ushioda, Eiichi Takahashi, Takumi Kikegawa, Daisuke Wakabayashi, Daisuke Wakabayashi, Nobumasa Funamori, Nobumasa Funamori
Physics of the Earth and Planetary Interiors   257 230-239   Aug 2016
© 2016 Elsevier B.V. Recent advances in techniques for high-pressure and high-temperature experiments enable us to measure the velocity of sound in liquid Fe alloys. However, reported velocities in liquid Fe–S differ among research groups (e.g., b...
Klaus Dieter Liss, Klaus Dieter Liss, Klaus Dieter Liss, Ken Ichi Funakoshi, Rian Johannes Dippenaar, Yuji Higo, Ayumi Shiro, Ayumi Shiro, Mark Reid, Mark Reid, Hiroshi Suzuki, Hiroshi Suzuki, Hiroshi Suzuki, Takahisa Shobu, Koichi Akita, Koichi Akita, Koichi Akita
Metals   6    Jul 2016
© 2016 by the authors; licensee MDPI, Basel, Switzerland. Titanium aluminides find application in modern light-weight, high-temperature turbines, such as aircraft engines, but suffer from poor plasticity during manufacturing and processing. Huge f...
Anna M. Dymshits, Peter I. Dorogokupets, Igor S. Sharygin, Konstantin D. Litasov, Konstantin D. Litasov, Anton Shatskiy, Anton Shatskiy, Sergey V. Rashchenko, Sergey V. Rashchenko, Eiji Ohtani, Akio Suzuki, Yuji Higo
Physics and Chemistry of Minerals   43 447-458   Jun 2016
© 2016, Springer-Verlag Berlin Heidelberg. A new synchrotron X-ray diffraction study of chromium oxide Cr2O3(eskolaite) with the corundum-type structure has been carried out in a Kawai-type multi-anvil apparatus to pressure of 15 GPa and temperatu...
Steeve Gréaux, Steeve Gréaux, Yoshio Kono, Yanbin Wang, Akihiro Yamada, Akihiro Yamada, Chunyin Zhou, Zhicheng Jing, Zhicheng Jing, Toru Inoue, Yuji Higo, Tetsuo Irifune, Tetsuo Irifune, Naoya Sakamoto, Hisayoshi Yurimoto
Geophysical Research Letters   43 4239-4246   May 2016
© 2016. American Geophysical Union. All Rights Reserved. The elasticity of Al-bearing stishovite with 1.0, 3.3, and 4.5 wt % Al2O3was investigated in the multianvil apparatus at high pressures and temperatures up to 21 GPa and 1700 K, by ultrasoni...
Yuki Shibazaki, Yuki Shibazaki, Keisuke Nishida, Yuji Higo, Mako Igarashi, Masaki Tahara, Tatsuya Sakamaki, Hidenori Terasaki, Yuta Shimoyama, Soma Kuwabara, Yusaku Takubo, Eiji Ohtani
American Mineralogist   101 1150-1160   May 2016
© 2016 by Walter de Gruyter Berlin/Boston 2016. The cores of the Earth and other differentiated bodies are believed to be comprised of iron and various amounts of light elements. Measuring the densities and sound velocities of iron and its alloys ...
Gustavo A. Rosales-Sosa, Atsunobu Masuno, Yuji Higo, Hiroyuki Inoue
Scientific Reports   6    Apr 2016
Obtaining "hard" and "crack-resistant" glasses have always been of great important in glass science and glass technology. However, in most commercial glasses both properties are not compatible. In this work, colorless and transparent xAl2O3-(100-x...
Yu Nishihara, Kazuki Fuke, Yoshinori Tange, Yuji Higo
High Pressure Research   36 121-139   Apr 2016
© 2016 Informa UK Limited, trading as Taylor & Francis Group. We developed a method to determine the absolute pressure effect on thermocouple electromotive force (EMF), based on a single wire method using Kawai-type multi-anvil apparatus. In thi...
Shuangmeng Zhai, Yuan Yin, Yuan Yin, Sean R. Shieh, Shuangming Shan, Weihong Xue, Ching Pao Wang, Ke Yang, Yuji Higo
Physics and Chemistry of Minerals   43 307-314   Apr 2016
© 2016, Springer-Verlag Berlin Heidelberg. In situ high-pressure synchrotron X-ray diffraction and Raman spectroscopic studies of orthorhombic CaFe2O4-type β-CaCr2O4chromite were carried out up to 16.2 and 32.0 GPa at room temperature using multi-...
Soma Kuwabara, Hidenori Terasaki, Keisuke Nishida, Yuta Shimoyama, Yusaku Takubo, Yuji Higo, Yuki Shibazaki, Satoru Urakawa, Kentaro Uesugi, Akihisa Takeuchi, Tadashi Kondo
Physics and Chemistry of Minerals   43 229-236   Mar 2016
© 2015, Springer-Verlag Berlin Heidelberg. The sound velocity (VP) of liquid Fe–10 wt% Ni and Fe–10 wt% Ni–4 wt% C up to 6.6 GPa was studied using the ultrasonic pulse-echo method combined with synchrotron X-ray techniques. The obtained VPof liqui...
T. Ishii, T. Ishii, L. Shi, R. Huang, N. Tsujino, D. Druzhbin, R. Myhill, Y. Li, L. Wang, T. Yamamoto, N. Miyajima, T. Kawazoe, N. Nishiyama, Y. Higo, Y. Tange, T. Katsura
Review of Scientific Instruments   87    Feb 2016
© 2016 AIP Publishing LLC. We have generated over 40 GPa pressures, namely, 43 and 44 GPa, at ambient temperature and 2000 K, respectively, using Kawai-type multi-anvil presses (KMAP) with tungsten carbide anvils for the first time. These high-pre...
Noriyoshi Tsujino, Yu Nishihara, Daisuke Yamazaki, Yusuke Seto, Yuji Higo, Eiichi Takahashi
Nature   539 81-84   Jan 2016
© 2016 Macmillan Publishers Limited, part of Springer Nature. All rights reserved. Seismic shear wave anisotropy is observed in Earth's uppermost lower mantle around several subducted slabs. The anisotropy caused by the deformation-induced crystal...
Gustavo A. Rosales-Sosa, Atsunobu Masuno, Yuji Higo, Hiroyuki Inoue, Yutaka Yanaba, Teruyasu Mizoguchi, Takumi Umada, Kohei Okamura, Katsuyoshi Kato, Yasuhiro Watanabe
Scientific Reports   5    Oct 2015
Glasses with high elastic moduli have been in demand for many years because the thickness of such glasses can be reduced while maintaining its strength. Moreover, thinner and lighter glasses are desired for the fabrication of windows in buildings ...
M. Nishi, M. Nishi, T. Irifune, T. Irifune, S. Gréaux, S. Gréaux, Y. Tange, Y. Higo
Physics of the Earth and Planetary Interiors   245 52-58   Aug 2015
© 2015 Elsevier B.V. Phase transformations in natural serpentine and chlorite have been studied at 25-50GPa and 900-1280°C by in-situ X-ray diffraction measurements using the multianvil apparatus with sintered diamond anvils. Antigorite was found ...
Lijin Ye, Shuangmeng Zhai, Xiang Wu, Chaowen Xu, Ke Yang, Yuji Higo
Physics and Chemistry of Minerals   42 569-577   Jul 2015
© 2015, Springer-Verlag Berlin Heidelberg. The high-pressure behavior and stability of synthetic jacobsite MnFe2O4have been investigated up to 39.55 GPa at room temperature by means of in situ synchrotron X-ray diffraction using diamond anvil cell...
Takeshi Arimoto, Steeve Gréaux, Steeve Gréaux, Tetsuo Irifune, Tetsuo Irifune, Chunyin Zhou, Chunyin Zhou, Yuji Higo
Physics of the Earth and Planetary Interiors   246 1-8   Jul 2015
© 2015 Elsevier B.V. Elastic wave velocities of synthetic Fe3Al2Si3O12almandine have been determined at simultaneous high pressure and temperature up to 19GPa and 1700K by the ultrasonic technique in conjunction with in situ synchrotron X-ray diff...
Tomohiro Ohuchi, Yu Nishihara, Yusuke Seto, Takaaki Kawazoe, Takaaki Kawazoe, Masayuki Nishi, Masayuki Nishi, Genta Maruyama, Mika Hashimoto, Yuji Higo, Ken ichi Funakoshi, Akio Suzuki, Takumi Kikegawa, Tetsuo Irifune, Tetsuo Irifune
Physics of the Earth and Planetary Interiors   243 1-21   Jun 2015
© 2015 Elsevier B.V. Simple-shear deformation experiments on polycrystalline olivine and olivine single-crystal were conducted at pressures of 1.3-3.8. GPa and temperatures of 1223-1573. K to understand the achievement of steady-state fabric stren...
Yuki Sakai, Ryota Tanakadate, Masanori Matoba, Ikuya Yamada, Ikuya Yamada, Norimasa Nishiyama, Norimasa Nishiyama, Tetsuo Irifune, Kenichi Funakoshi, Kenichi Funakoshi, Takehiro Kunimoto, Takehiro Kunimoto, Yuji Higo, Yoichi Kamihara
Journal of the Physical Society of Japan   84 044705   Apr 2015
©2015 The Physical Society of Japan. In situ high-pressure (HP) and high-temperature (HT) energy dispersive X-ray diffraction of shandite-phase Co3-x-FexSn2S2was carried out in the pressure range of 0-11 GPa and temperature range from room tempera...
Tomoaki Kubo, Takumi Kato, Yuji Higo, Ken ichi Funakoshi
Science Advances   1    Jan 2015
2015 © The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). The presence of seifertite, one of the high-pr...
Kyoko N. Matsukage, Kyoko N. Matsukage, Yu Nishihara, Fumiya Noritake, Katsuyuki Kawamura, Noriyoshi Tsujino, Moe Sakurai, Yuji Higo, Junichi Nakajima, Akira Hasegawa, Eiichi Takahashi
American Mineralogist   100 1856-1865   Jan 2015
To understand the origin of observed low velocities in the crustal portion of subducting plates, we performed in situ measurements of elastic wave velocities of anorthite at temperatures up to 1373 K at pressure of ∼1 GPa and up to 773 K at 2.0-7....
Zhaodong Liu, Tetsuo Irifune, Tetsuo Irifune, Steeve Gréaux, Steeve Gréaux, Takeshi Arimoto, Toru Shinmei, Yuji Higo
Physics and Chemistry of Minerals   42 213-222   Jan 2015
© 2014, Springer-Verlag Berlin Heidelberg. The elastic wave velocities of polycrystalline Mj80Py20 garnet along the majorite–pyrope system have been measured at pressures up to 21 GPa and temperatures up to 2,000 K using ultrasonic interferometry ...
Tomohiro Ohuchi, Takaaki Kawazoe, Takaaki Kawazoe, Yuji Higo, K. I. Funakoshi, K. I. Funakoshi, Akio Suzuki, Takumi Kikegawa, Tetsuo Irifune, Tetsuo Irifune
Science Advances   1    Jan 2015
2015 © The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. Understanding the deformation mechanisms of olivine is important for addressing the dynamic processes in Earth’s upper mantle. It has...
Chaowen Xu, Shuangmeng Zhai, Lijin Ye, Yuji Higo
Physics and Chemistry of Minerals   42 327-336   Jan 2015
© 2014, Springer-Verlag Berlin Heidelberg. The elastic properties of synthetic low-pressure and high-pressure Ca2AlSiO5.5oxygen defect perovskites were investigated by in situ X-ray diffraction in a large-volume high-pressure apparatus. The P–V–T ...
Y. Sakai, M. Matoba, I. Yamada, K. Funakoshi, K. Funakoshi, T. Kunimoto, T. Kunimoto, Y. Higo, Y. Kamihara
EPL   107    Sep 2014
Copyright © EPLA, 2014. We have discovered new phases of binary compounds of Ru and group-14 elements, CsCl-type cubic (Pm-3m) RuGe and RuSn. These materials are synthesized by heat treatment under high pressure, at more than 9.0 GPa for RuGe and ...
Vincenzo Stagno, Luca Bindi, Yuki Shibazaki, Yoshinori Tange, Yoshinori Tange, Yuji Higo, H. K. Mao, H. K. Mao, Paul J. Steinhardt, Yingwei Fei
Scientific Reports   4    Jul 2014
The first natural-occurring quasicrystal, icosahedrite, was recently discovered in the Khatyrka meteorite, a new CV3 carbonaceous chondrite. Its finding raised fundamental questions regarding the effects of pressure and temperature on the kinetic ...
D. Yamazaki, E. Ito, T. Yoshino, N. Tsujino, A. Yoneda, X. Guo, F. Xu, Y. Higo, K. Funakoshi
Physics of the Earth and Planetary Interiors   228 262-267   Jan 2014
We generated pressures up to 109.3GPa in a Kawai-type multianvil apparatus (KMA) equipped with sintered diamond anvils by means of in situ X-ray observation with synchrotron radiation. The unit cell parameters of (Mg0.92Fe0.08)SiO3perovskite, SiO2...
Takashi Yoshino, Daisuke Yamazaki, Yuji Higo, Ken Ichi Funakoshi, Ken Ichi Funakoshi
Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu   24 126-135   Jan 2014
An experimental method to study the seismic attenuation factor (Q-1) and anelastic properties of materials at high pressure and high temperature has been established by using the multianvil high-pressure deformation device (D-DIA) and a synchrotro...
Chunyin Zhou, Steeve Gréaux, Norimasa Nishiyama, Norimasa Nishiyama, Tetsuo Irifune, Yuji Higo
Physics of the Earth and Planetary Interiors   228 97-105   Jan 2014
Elastic wave velocities of MgSiO3akimotoite polycrystalline samples have been measured at pressures up to 25.7GPa and temperatures to 1500K by a combination of in situ X-ray diffraction and ultrasonic interferometry techniques in a large volume Ka...
Takayuki Ishii, Hiroshi Kojitani, Shoichi Tsukamoto, Kiyoshi Fujino, Daisuke Mori, Yoshiyuki Inaguma, Noriyoshi Tsujino, Noriyoshi Tsujino, Takashi Yoshino, Takashi Yoshino, Daisuke Yamazaki, Daisuke Yamazaki, Yuji Higo, Kenichi Funakoshi, Masaki Akaogi
American Mineralogist   99 1788-1797   Jan 2014
© 2014 by Walter de Gruyter Berlin/Boston. We determined phase relations in FeCr2O4at 12-28 GPa and 800-1600 °C using a multi-anvil apparatus. At 12-16 GPa, FeCr2O4spinel (chromite) first dissociates into two phases: a new Fe2Cr2O5phase + Cr2O3wit...
M. Nishi, M. Nishi, T. Irifune, T. Irifune, J. Tsuchiya, J. Tsuchiya, Y. Tange, Y. Tange, Y. Nishihara, K. Fujino, Y. Higo
Nature Geoscience   7 224-227   Jan 2014
The presence of water strongly influences the structure, composition and dynamics of the Earth's deep mantle. Hydrous magnesium-rich silicates play an important role in transporting water into the deep mantle when oceanic plates subduct as slabs. ...
Daiki Umeyama, Satoshi Horike, Satoshi Horike, Cedric Tassel, Cedric Tassel, Hiroshi Kageyama, Yuji Higo, Keisuke Hagi, Naoki Ogiwara, Susumu Kitagawa, Susumu Kitagawa
APL Materials   2    Jan 2014
© 2014 Author(s). The proton conductivity of a dense coordination polymer (CP) was investigated under high-pressure conditions. Impedance measurements under high pressures revealed that the proton conductivity of the CP decreased more than 1000-fo...
E. Ito, D. Yamazaki, T. Yoshino, S. Shan, X. Guo, N. Tsujimo, T. Kunimoto, Y. Higo, K. Funakoshi
Physics of the Earth and Planetary Interiors   228 170-175   Jan 2014
We examined the structure of MnO and CoO up to 72 and 88. GPa, respectively, at room temperature by means of in situ X-ray diffraction using the synchrotron radiation at SPring-8. Compression was carried out with the Kawai-type apparatus equipped ...
Yuki Shibazaki, Yuki Shibazaki, Hidenori Terasaki, Hidenori Terasaki, Eiji Ohtani, Ryuji Tateyama, Keisuke Nishida, Keisuke Nishida, Ken ichi Funakoshi, Yuji Higo
Physics of the Earth and Planetary Interiors   228 192-201   Jan 2014
Planetary cores are considered to consist of an iron-nickel (Fe-Ni) alloy and light elements and hydrogen is one of plausible light elements in the core. Here we have performed in situ X-ray diffraction experiments on an Fe0.9Ni0.1-H system up to ...
Hidenori Terasaki, Yuki Shibazaki, Yuki Shibazaki, Keisuke Nishida, Ryuji Tateyama, Suguru Takahashi, Miho Ishii, Yuta Shimoyama, Eiji Ohtani, Eiji Ohtani, Kenichi Funakoshi, Kenichi Funakoshi, Yuji Higo
ISIJ International   54 2637-2642   Jan 2014
© 2014 ISIJ. We have performed in situ X-ray diffraction measurements under high pressure and high temperature to study hydrogen solubility in Fe3C carbide. Hydrogen solubility can be estimated from a volume expansion associated with hydrogen inco...
Yongtao Zou, Yongtao Zou, Steeve Gréaux, Tetsuo Irifune, Baosheng Li, Yuji Higo
Journal of Physical Chemistry C   117 24518-24526   Nov 2013
Compressional (VP) and shear (VS) wave velocities of polycrystalline MgAl2O4spinel have been measured up to 14 GPa and 900 K using ultrasonic interferometry and in situ X-ray diffraction techniques. Here, we observed a weaker pressure dependence i...
Konstantin D. Litasov, Konstantin D. Litasov, Anton Shatskiy, Anton Shatskiy, Pavel N. Gavryushkin, Pavel N. Gavryushkin, Igor S. Sharygin, Peter I. Dorogokupets, Anna M. Dymshits, Anna M. Dymshits, Eiji Ohtani, Yuji Higo, Kenichi Funakoshi
Physics of the Earth and Planetary Interiors   224 83-87   Nov 2013
Pressure-volume-temperature relations have been measured to 33GPa and 1673K for natural siderite (Fe0.95Mn0.05CO3) using synchrotron X-ray diffraction with a multianvil apparatus at the 'SPring-8' facility. A least-squares fit of the room-temperat...
Shigeaki Ono, Takumi Kikegawa, Yuji Higo
Physics and Chemistry of Minerals   40 811-816   Nov 2013
We used an in situ measurement method to investigate the phase transition of Fe2SiO4polymorphs under high pressures and temperatures. A multi-anvil high-pressure apparatus combined with synchrotron X-ray radiation was used. The stability of each p...
Anton Shatskiy, Anton Shatskiy, Pavel N. Gavryushkin, Pavel N. Gavryushkin, Igor S. Sharygin, Igor S. Sharygin, Konstantin D. Litasov, Konstantin D. Litasov, Igor N. Kupriyanov, Yuji Higo, Yuri M. Borzdov, Ken Ichi Funakoshi, Yuri N. Palyanov, Yuri N. Palyanov, Eiji Ohtani
American Mineralogist   98 2172-2182   Nov 2013
Phase relations in the Na2CO3-MgCO3system have been studied in high-pressure high-temperature (HPHT) multi-anvil experiments using graphite capsules at 6.0 ± 0.5 GPa pressures and 900-1400 °C temperatures. Sub-solidus assemblages are represented b...
Norimasa Nishiyama, Takashi Taniguchi, Hiroaki Ohfuji, Kimiko Yoshida, Fumihiro Wakai, Byung Nam Kim, Hidehiro Yoshida, Yuji Higo, Astrid Holzheid, Oliver Beermann, Tetsuo Irifune, Yoshio Sakka, Ken Ichi Funakoshi
Scripta Materialia   69 362-365   Sep 2013
Transparent nanocrystalline bulk alumina was obtained at 7.7 GPa and 800 C. The alumina has an average grain size of ∼150 nm and an in-line transmission of 71% for a wavelength of 640 nm and a thickness of 0.8 mm. The values of microhardness and f...
Suguru Takahashi, Eiji Ohtani, Hidenori Terasaki, Hidenori Terasaki, Yoshinori Ito, Yuki Shibazaki, Yuki Shibazaki, Miho Ishii, Ken ichi Funakoshi, Yuji Higo
Physics and Chemistry of Minerals   40 647-657   Sep 2013
The phase and melting relations of the C-saturated C-Mg-Fe-Si-O system were investigated at high pressure and temperature to understand the role of carbon in the structure of the Earth, terrestrial planets, and carbon-enriched extraterrestrial pla...
Noriyoshi Tsujino, Noriyoshi Tsujino, Yu Nishihara, Yu Nishihara, Yu Nishihara, Yoichi Nakajima, Yoichi Nakajima, Eiichi Takahashi, Ken ichi Funakoshi, Yuji Higo
Earth and Planetary Science Letters   375 244-253   Aug 2013
In-situ synchrotron X-ray diffraction experiments using a multi-anvil apparatus have been conducted on face-centered cubic iron (γ-Fe), which is a possible component of metallic cores in planetary bodies. From the pressure-volume-temperature (P-V-...
Anton Shatskiy, Anton Shatskiy, Igor S. Sharygin, Igor S. Sharygin, Pavel N. Gavryushkin, Pavel N. Gavryushkin, Konstantin D. Litasov, Konstantin D. Litasov, Yuri M. Borzdov, Anastasia V. Shcherbakova, Yuji Higo, Ken Ichi Funakoshi, Yuri N. Palyanov, Yuri N. Palyanov, Eiji Ohtani
American Mineralogist   98 1593-1603   Aug 2013
Phase relations in the K2CO3-MgCO3system have been studied in high-pressure high-temperature (HPHT) multi-anvil experiments using graphite capsules at 6.0 ± 0.5 GPa pressures and 900-1450 °C temperatures. Subsolidus assemblies comprise the fields ...
Toru Inoue, Takayuki Ueda, Yuji Higo, Akihiro Yamada, Tetsuo Irifune, Ken Ichi Funakoshi
Earth's Deep Water Cycle   168 147-157   Mar 2013
© 2006 by the American Geophysical Union. All rights reserved. We have determined the stability and P-V-T equation of state of superhydrous phase B, Mg10Si3O18H4(hereafter referred to as Shy-B) by in situ X-ray diffraction measurements at SPring-8...
Keisuke Nishida, Keisuke Nishida, Yoshio Kono, Yoshio Kono, Hidenori Terasaki, Hidenori Terasaki, Suguru Takahashi, Miho Ishii, Yuta Shimoyama, Yuji Higo, Ken Ichi Funakoshi, Tetsuo Irifune, Eiji Ohtani
Earth and Planetary Science Letters   362 182-186   Jan 2013
The P-wave velocity (VP) of liquid Fe57S43was measured up to 5.4GPa using an ultrasonic method combined with the synchrotron X-ray technique. The VPof liquid Fe57S43showed little change with temperature, but increased almost linearly from 3105±11m...
Yoshio Kono, Yoshio Kono, Tetsuo Irifune, Hiroaki Ohfuji, Yuji Higo, Ken Ichi Funakoshi
Geophysical Research Letters   39    Dec 2012
Compressional (Vp) and shear (Vs) wave velocities of mid-ocean-ridge basalt (MORB) was investigated at in situ high pressure and high temperature conditions of the mantle transition region by using a combination of ultrasonic and in situ x-ray mea...
Daisuke Yamazaki, Eiji Ito, Takashi Yoshino, Akira Yoneda, Xinzhuan Guo, Baohua Zhang, Wei Sun, Akira Shimojuku, Noriyoshi Tsujino, Takehiro Kunimoto, Yuji Higo, Ken Ichi Funakoshi
Geophysical Research Letters   39    Oct 2012
In order to determine the P-V-T equation of state of -iron, in situ X-ray observations were carried out at pressures up to 80 GPa and temperatures up to 1900 K using the Kawai-type high pressure apparatus equipped with sintered diamond anvils whic...
Masanori Matsui, Yuji Higo, Yoshihiro Okamoto, Tetsuo Irifune, Ken Ichi Funakoshi
American Mineralogist   97 1670-1675   Oct 2012
The elastic compressional (P) and shear (S) wave velocities in NaCl were measured up to 12 GPa at 300 K, and up to 8 GPa at 473 and 673 K, by combining ultrasonic interferometry, in situ synchrotron X-ray diffraction, and X-ray radiographic techni...
Yu Nishihara, Yu Nishihara, Yu Nishihara, Yoichi Nakajima, Yoichi Nakajima, Akihiko Akashi, Noriyoshi Tsujino, Eiichi Takahashi, Ken Ichi Funakoshi, Yuji Higo
American Mineralogist   97 1417-1420   Aug 2012
Isothermal compression curves of face-centered cubic iron (γ-Fe) were determined at high temperatures (1273 and 1073 K) up to 27 GPa by in situ X-ray diffraction experiments using synchrotron radiation and the Kawai-type multi-anvil apparatus. Fit...
Takashi Yoshino, Akira Shimojuku, Shuanming Shan, Xinzhuan Guo, Daisuke Yamazaki, Eiji Ito, Yuji Higo, Ken Ichi Funakoshi
Journal of Geophysical Research: Solid Earth   117    Aug 2012
The electrical conductivity of olivine and its high-pressure polymorphs with various iron contents [XFe= Fe/(Fe + Mg) = 0.1, 0.2, 0.3, 0.5, 0.7 and 1.0] was measured over a wide range of pressure (P) and temperature (T) conditions covering the sta...
Yongtao Zou, Yongtao Zou, Steeve Gréaux, Tetsuo Irifune, Matthew L. Whitaker, Matthew L. Whitaker, Toru Shinmei, Yuji Higo
Physics and Chemistry of Minerals   39 589-598   Jul 2012
Thermoelastic properties of synthetic Mg3Al2Si3O12pyrope garnet have been measured at high pressure and high temperature by using in situ energy-dispersive X-ray diffraction, using a Kawai-type multi-anvil apparatus. Measurements have been conduct...
Yongtao Zou, Yongtao Zou, Tetsuo Irifune, Steeve Gréaux, Matthew L. Whitaker, Toru Shinmei, Hiroaki Ohfuji, Ryo Negishi, Yuji Higo
Journal of Applied Physics   112    Jul 2012
Elastic wave velocities of synthetic polycrystalline Mg3Al2(SiO4)3garnet have been successfully measured to 20 GPa and temperatures up to 1700 K by ultrasonic interferometry combined with energy-dispersive synchrotron x-ray diffraction in a Kawai-...
Masanori Matsui, Eiji Ito, Daisuke Yamazaki, Takashi Yoshino, Xinzhuan Guo, Shuangming Shan, Yuji Higo, Ken Ichi Funakoshi
American Mineralogist   97 176-183   Jan 2012
Static compression data of (Mg0.83,Fe0.17)O and (Mg0.75,Fe0.25)O ferropericlases have been measured up to 58 GPa along 300, 700, and 1100 K isotherms, using synchrotron powder X-ray diffraction experiments combined with a Kawai-type, multi-anvil, ...
Masayuki Nishi, Masayuki Nishi, Tomoaki Kubo, Takumi Kato, Aiko Tominaga, Ken ichi Funakoshi, Yuji Higo
Physics of the Earth and Planetary Interiors   189 47-55   Nov 2011
Mechanisms and kinetics of exsolution of majoritic garnet from Ca-Tschermak-rich clinopyroxene were examined at 14.0-15.6GPa, 1250-1590°C, and H2O-undersaturated conditions (800-1170wt. ppm H2O) by time-resolved in situ synchrotron X-ray diffracti...
Takaaki Kawazoe, Yu Nishihara, Yu Nishihara, Tomohiro Ohuchi, Norimasa Nishiyama, Yuji Higo, Ken Ichi Funakoshi, Tetsuo Irifune
American Mineralogist   96 1665-1672   Nov 2011
We report on technical improvements in experiments with a deformation-DIA (D-DIA) apparatus, which enable the study of the rheology of solid materials at P-T conditions of the Earth's mantle transition zone. Dimensions of the anvil truncation, pre...
Shigeaki Ono, Shigeaki Ono, Takumi Kikegawa, Yuji Higo
Physics and Chemistry of Minerals   38 735-740   Oct 2011
We used an in situ measurement method to investigate the phase transition of CaGeO3polymorphs under high pressures and temperatures. A multi-anvil high-pressure apparatus combined with intense synchrotron X-ray radiation was used. The transition b...
Takashi Yoshino, Eiji Ito, Tomoo Katsura, Daisuke Yamazaki, Shuanming Shan, Xinzhuan Guo, Masayuki Nishi, Yuji Higo, Ken Ichi Funakoshi
Journal of Geophysical Research: Solid Earth   116    Apr 2011
The pressure-induced electronic spin transition of iron in ferropericlase was investigated as a function of iron content in ferropericlase by in situ electrical conductivity measurement. The electrical conductivity of ferropericlase, (Mg1-x,Fex)O ...
Hidenori Terasaki, Yuki Shibazaki, Tatsuya Sakamaki, Ryuji Tateyama, Eiji Ohtani, Ken Ichi Funakoshi, Yuji Higo
American Mineralogist   96 93-99   Jan 2011
Hydrogen is the most abundant element in the solar system, suggesting that hydrogen is one of the plausible light elements in the planetary cores. To investigate the solubility of hydrogen into FeSi and phase relations of the FeSi-H system under h...
Daisuke Yamazaki, Eiji Ito, Tomoo Katsura, Takashi Yoshino, Shuangmeng Zhai, Hiroshi Fukui, Anton Shatskiy, Xinzhuan Guo, Shuangming Shan, Takuo Okuchi, Yoshinori Tange, Yuji Higo, Ken Ichi Funakoshi
American Mineralogist   96 89-92   Jan 2011
To determine the phase boundary between the perovskite and post-perovskite structures in MnGeO3, in situ X-ray observations were carried out at pressures of 57-68 GPa and temperatures of 1000-1900 K using the Kawai-type high-pressure apparatus equ...
Yoshio Kono, Tetsuo Irifune, Yuji Higo, Toru Inoue, Auke Barnhoorn, Auke Barnhoorn, Daisuke Suetsugu, Craig Bina, Toru Inoue, Douglas Wiens, Mark Jellinek
Physics of the Earth and Planetary Interiors   183 196-211   Nov 2010
Simultaneous elastic wave velocity and in situ synchrotron X-ray measurements on polycrystalline MgO were carried out with a V/V0between ∼0.9 and 1.0, which corresponds to the pressures up to 23.6GPa in our P-V-T relation of MgO, and temperatures ...
Yu Nishihara, Yu Nishihara, Ken Ichi Funakoshi, Yuji Higo, Noriyoshi Tsujino, Takaaki Kawazoe, Tomoaki Kubo, Akira Shimojuku, Hidenori Terasaki, Norimasa Nishiyama, Daisuke Suetsugu, Craig Bina, Toru Inoue, Douglas Wiens, Mark Jellinek
Physics of the Earth and Planetary Interiors   183 164-174   Nov 2010
Stress relaxation experiments of olivine were conducted under high-pressure and high-temperature conditions up to 10GPa and 1273K using a Kawai-type multi-anvil apparatus. A pre-sintered San Carlos olivine sample rod was inserted between two dense...
Yoshio Kono, Steeve Gréaux, Yuji Higo, Hiroaki Ohfuji, Tetsuo Irifune
Journal of Earth Science   21 782-791   Oct 2010
Simultaneous ultrasonic elastic wave velocity and in situ synchrotron X-ray measurements on grossular garnet were carried out up to 17 GPa and 1 650 K. P- and S-wave velocities and bulk and shear modulus showed linear pressure and temperature depe...
Ayako Yokoyama, Masanori Matsui, Yuji Higo, Yoshio Kono, Tetsuo Irifune, Ken Ichi Funakoshi
Journal of Applied Physics   107    Jun 2010
The elastic compressional (P) and shear (S) wave velocities of silica glass at simultaneous high pressures and high temperatures were measured using a combination of ultrasonic interferometry, in situ synchrotron x-ray diffraction, and radiographi...
E. Ito, T. Yoshino, D. Yamazaki, A. S. Shatskiy, A. S. Shatskiy, S. Shan, X. Guo, T. Katsura, Y. Higo, K. Funakoshi
Journal of Physics: Conference Series   215    May 2010
High pressure generation has been tried by using the Kawai-cell equipped with sintered diamond cubes in conjunction with investigation of the spin transition in Fe2+of (Mg0.83Fe0.17)O (ferropericlase, Fp). The Kawai-cell was squeezed in the DIA ty...
D. Yamazaki, E. Ito, T. Yoshino, X. G. Guo, S. Shun, M. Nishi, Y. Higo, K. Funakoshi
Journal of Physics: Conference Series   215    May 2010
Phase transformation from perovskite to "post-perovskite" and reserve transition in CaRuO3was observed by in situ X-ray diffraction at pressure of 20-22 GPa and temperature of 1173-1523 K. These pressure and temperature conditions are 1-2 GPa lowe...
K. Funakoshi, Y. Higo, Y. Nishihara
Journal of Physics: Conference Series   215    May 2010
We have demonstrated the feasibility of a two-dimensional angle-dispersive x-ray diffraction (2D-ADXD) measurement system using a Kawai-type multianvil press at SPring-8. By taking advantage of the x-ray-transparent anvil and energy-dispersive x-r...
Masayuki Nishi, Tomoaki Kubo, Takumi Kato, Aiko Tominaga, Akira Shimojuku, Naoko Doi, Ken Ichi Funakoshi, Yuji Higo
Geophysical Research Letters   37    May 2010
Majoritic garnets discovered as diamond inclusion in several localities originated from the deep upper mantle or the mantle transition zone. Some of them show evidence of partial transformation to low-pressure phases of pyropic garnet and clinopyr...
Yu Nishihara, Yu Nishihara, Yu Nishihara, Ken Ichi Funakoshi, Yuji Higo, Hidenori Terasaki, Norimasa Nishiyama, Tomoaki Kubo, Akira Shimojuku, Noriyoshi Tsujino
Journal of Synchrotron Radiation   16 757-761   Oct 2009
A system for stress measurement under high pressure has been developed at beamline BL04B1, SPring-8, Japan. A Kawai-type multi-anvil apparatus, SPEED-1500, was used to pressurize polycrystalline KCl to 9.9 GPa in a mechanically anisotropic cell as...

Misc

 
山田明寛, 夏原佳奈, 増野敦信, 山中恵介, 肥後祐司, 吉田智, 松岡純
ガラスおよびフォトニクス材料討論会講演要旨集   58th 171‐172   Nov 2017
高味拓永, 山田明寛, 大内智博, 肥後祐司, 吉田智, 松岡純
ガラスおよびフォトニクス材料討論会講演要旨集   58th 165‐166   Nov 2017
寺崎英紀, 下山裕太, 西田圭佑, 坂巻竜也, 柴崎裕樹, 肥後祐司, 丹下慶範
高圧討論会講演要旨集   58th 222   Oct 2017
西田圭佑, 柴崎裕樹, 戸邉宙, 寺崎英紀, 肥後祐司, 若林大佑, 船守展正, 鈴木昭夫
高圧討論会講演要旨集   58th 164   Oct 2017
肥後祐司, 丹下慶範
高圧討論会講演要旨集   58th 224   Oct 2017
柿澤翔, 丹下慶範, GREAUX Steeve, 肥後祐司
高圧討論会講演要旨集   58th 225   Oct 2017
辻野典秀, 山崎大輔, 櫻井萌, 肥後祐司, 丹下慶範
高圧討論会講演要旨集   58th 165   Oct 2017
西原遊, 土居峻太, 柿澤翔, 肥後祐司, 丹下慶範, 入舩徹男
高圧討論会講演要旨集   58th 120   Oct 2017
今村公裕, 久保友明, 加藤工, 亀卦川卓美, 肥後祐司, 丹下慶範
高圧討論会講演要旨集   58th 108   Oct 2017
柿澤翔, 井上徹, 井上徹, 西真之, 西真之, 有本岳史, 門林宏和, 丹下慶範, 肥後祐司, 中野智志, 平井寿子
高圧討論会講演要旨集   58th 102   Oct 2017
久保友明, 糀谷浩, 肥後祐司, 丹下慶範
高圧討論会講演要旨集   58th 188   Oct 2017
久國智彦, 鈴木沙也加, 本多信一, 新部正人, 寺澤倫孝, 肥後祐司, 庭瀬敬右, 泉宏和, 田口英次, 岩田忠夫
応用物理学会春季学術講演会講演予稿集(CD-ROM)   64th ROMBUNNO.14p‐P4‐10   Mar 2017

Conference Activities & Talks

 
西原遊, 土居峻太, 肥後祐司, 丹下慶範
高圧討論会講演要旨集   13 Nov 2018   
肥後祐司, 入舩徹男
高圧討論会講演要旨集   13 Nov 2018   
坪川祐美子, 大内智博, 肥後祐司, 丹下慶範, 入舩徹男
高圧討論会講演要旨集   13 Nov 2018   
関根ちひろ, 金澤昌俊, 平井伸治, 肥後祐司, 新名亨, 入舩徹男
高圧討論会講演要旨集   13 Nov 2018   
大内智博, LEI Xinglin, 肥後祐司, 丹下慶範, 境毅
高圧討論会講演要旨集   13 Nov 2018