YOKOYAMA Kazuya

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Name
YOKOYAMA Kazuya
Affiliation
Ashikaga University
Section
Faculty of Engineering Department of Innovative Engineering,Division of Electrical and Electronic Engineering
Job title
Professor
Degree
Doctor(Engineering)(Niigata University)
Research funding number
60313558
ORCID ID
0000-0003-0286-2416

Research Areas

 
 

Academic & Professional Experience

 
1999
 - 
2000
Research associate, Graduate School of Science
 
 
   
 
and Technology, Niigata University
 

Education

 
 
 - 
1999
Information Science and Engineering, Graduate School of Science and Technology, Niigata University
 
 
 - 
1993
Department of Electrical and Electronic Engineering, Faculty of Engineering, Niigata University
 

Published Papers

 
Tetsuo Oka, Akira Takeda, Hayami Oki, Jun Ogawa, Satoshi Fukui, Juliana Scheiter, Wolfgang Häßler, Kazuya Yokoyama, Kengo Yamanaka, Longji Dadiel, Muralidhar Miryala, Naomichi Sakai, Masato Murakami, Jacques Noudem
IEEE Transactions on Applied Superconductivity   29    Aug 2019
© 2019 IEEE. The magnetic flux dissipation from the MgB2 bulk magnets during pulsed field magnetization (PFM) processes has been estimated for the samples fabricated by hot-pressing (HP) and spark plasma sintering (SPS). We defined the parameters ...
Yokoyama Kazuya, Oka Tetsuo
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY   29(5)    Aug 2019   [Refereed]
Oka Tetsuo, Takeda Akira, Shimizu Kouki, Higa Kazuya, Tsunoda Shunta, Ogawa Jun, Fukui Satoshi, Sato Takao, Yokoyama Kazuya, Nakamura Takashi
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY   29(3)    Apr 2019   [Refereed]
Yokoyama Kazuya, Katsuki Atsushi, Miura Atsuro, Oka Tetsuo
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY   29(3)    Apr 2019   [Refereed]
K. Yokoyama, A. Katsuki, A. Miura, T. Oka
Journal of Physics: Conference Series   1054    Jul 2018
© Published under licence by IOP Publishing Ltd. We developed several type superconducting bulk magnets with the goal of their industrial application, and study to improve a magnetic field activated by pulsed field magnetization (PFM). When consid...
T. Oka, S. Sasaki, H. Sasaki, S. Fukui, J. Ogawa, T. Sato, T. Nakano, M. Ooizumi, M. Tsujimura, K. Yokoyama
Journal of Physics: Conference Series   1054    Jul 2018
© Published under licence by IOP Publishing Ltd. The authors have developed a useful technique for extracting the Ni-sulfate compound from the "processed waste/fluid" of the electroless Ni-plating processes. After forming the fine NiHPO 3 precipi...
Kazuya Yokoyama, Atsushi Katsuki, Atsuro Miura, Tetsuo Oka
IEEE Transactions on Applied Superconductivity   28    Jun 2018
© 2018 IEEE. We developed several type superconducting bulk magnets with the goal of their industrial application, and study to improve a magnetic field by pulsed field magnetization. It is important to select a suitable refrigerator to cool a bul...

Misc

 
Kazuya Yokoyama, Atsushi Katsuki, Atsuro Miura, Tetsuo Oka
IEEE Transactions on Applied Superconductivity   28(3)    Apr 2018   [Refereed]
© 2017 IEEE. We have developed a desktop type superconducting bulk magnet using a Stirling cryocooler with the aim of miniaturizing the magnet system. In our previous study, the lowest achieved temperature of 51.3 K and the maximum trapped field o...
Tetsuo Oka, Akira Takeda, Sho Sasaki, Jun Ogawa, Satoshi Fukui, Takao Sato, Wolfgang Haessler, Kazuya Yokoyama
IEEE Transactions on Applied Superconductivity   28    Jan 2018   [Refereed]
IEEE The pulsed-field magnetization experiments have been carried out for the layered MgB < formula > < tex > Tex < /tex > < /formula > bulk magnets to clarify the magnetic flux motion during the activation processes. Since MgB < formula > < tex...
Kazuya Yokoyama, Atsushi Katsuki, Atsuro Miura, Tetsuo Oka
IEEE Transactions on Applied Superconductivity      Jan 2018
IEEE We developed several type superconducting bulk magnets with the goal of their industrial application, and study to improve a magnetic field by pulsed field magnetization. It is important to select a suitable refrigerator to cool a bulk superc...
Kazuya Yokoyama, Tetsuo Oka
High-Temperature Superconductors: Occurrence, Synthesis and Applications   369-385   Jan 2018
© 2018 Nova Science Publishers, Inc. We are developing several types of superconducting bulk magnets with the goal of their industrial application, and we are studying to improve the magnetic field by pulsedfield magnetization (PFM). It is importa...
Tetsuo Oka, Jun Ogawa, Satoshi Fukui, Takao Sato, Tomohito Nakano, Kazuya Yokoyama, Takashi Nakamura, Hiroyuki Fujishiro, Koshichi Noto
High-Temperature Superconductors: Occurrence, Synthesis and Applications   291-306   Jan 2018
© 2018 Nova Science Publishers, Inc. Various types of strong magnetic field generators with use of HTS bulk magnets and the small-scale refrigerators have been actually proposed and experimentally estimated for the feasible applications. The most ...
T. Oka, K. Ichiju, S. Sasaki, J. Ogawa, S. Fukui, T. Sato, M. Ooizumi, K. Yokoyama, S. Aoki, N. Ohnishi
Journal of Physics: Conference Series   897    Sep 2017
© Published under licence by IOP Publishing Ltd. A peculiar magnetic separation technique has been examined in order to remove the Cs-bearing Fe precipitates formed of the waste ash from the withdrawn incinerator furnaces in Fukushima. The separat...
Shun Mohri, Hiroki Inose, Hirokazu Arakawa, Kazuya Yokoyama, Yasuyuki Yamada, Isao Kikutani, Taro Nakamura
IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM   851-856   Aug 2017
© 2017 IEEE. Lower back pain is a major health concern worldwide. One cause of lower back pain is the burden on the lumbar region caused by the handling of heavy objects. To reduce this burden, the Ministry of Health, Labour and Welfare in Japan h...
K. Yokoyama, K. Eranda, Y. Zhao, A. Katsuki, A. Miura, T. Oka
Journal of Physics: Conference Series   871    Jul 2017
© Published under licence by IOP Publishing Ltd. In this study, we attempt to improve the trapped magnetic field by pulsed-field magnetization using REBCO bulk with small holes processed artificially. In our previous study, a hole was opened in th...
T. Oka, K. Hara, A. Takeda, J. Ogawa, S. Fukui, T. Sato, K. Yokoyama, A. Murakami
Journal of Physics: Conference Series   871    Jul 2017
© Published under licence by IOP Publishing Ltd. The motion of magnetic flux invading into the HTS bulk magnets were experimentally studied in their pulsed field magnetization processes. The authors paid attention to the effects of the shapes of t...
Taisuke Miyazaki, Satoshi Fukui, Jun Ogawa, Takao Sato, Tetsuo Oka, Juliane Scheiter, Wolfgang Hasler, Eranda Kulawansha, Zhao Yuanding, Kazuya Yokoyama
IEEE Transactions on Applied Superconductivity   27    Jun 2017
© 2002-2011 IEEE. MgB 2 bulk magnets are one of the attractive bulk superconductors because they have homogeneous trapped field distribution, low material costs, lightweight, and so on. Pulse-field magnetization (PFM) also has some effective adva...
K. Yokoyama, Eranda Kulawansha, Zhao Yuanding, T. Oka
IEEE Transactions on Applied Superconductivity   26    Jun 2016
© 2015 IEEE. We developed a desktop-type superconducting bulk magnet using a Stirling cryocooler with the aim of miniaturizing the system. This refrigerator was compact and highly energy efficient because a compressor was not needed outside; power...
T. Oka, Y. Takayanagi, S. Machida, K. Ichiju, S. Fukui, J. Ogawa, T. Sato, M. Ooizumi, M. Tsujimura, K. Yokoyama
IEEE Transactions on Applied Superconductivity   26    Jun 2016
© 2015 IEEE. A characteristic magnetic separation technique has been developed to recycle the Ni resource from the waste fluid of electroless Ni-plating processes. Since the plating waste still contains high concentration of Ni ions after several...
Tetsuo Oka, Kensuke Hara, Jun Ogawa, Satoshi Fukui, Takao Sato, Kazuya Yokoyama, Akira Murakami, Marco Langer
IEEE Transactions on Applied Superconductivity   26    Apr 2016
© 2002-2011 IEEE. The magnetic flux invasion into the Dy123-based HTS bulk magnets were experimentally evaluated during the pulsed field magnetization processes. Since the invasion of the magnetic flux into the sample would be expected to be affec...
K. Yokoyama, M. P.E.S. Kulawansha, Z. Yuanding, T. Oka
IEEE Transactions on Applied Superconductivity   26    Apr 2016
© 2016 IEEE. A large, high-J c bulk superconductor can trap a high magnetic field via the field cooling method, whereas a magnetic flux has difficulty penetrating the bulk due to the strong magnetic shield of pulsed-field magnetization (PFM). We ...
T. Oka, Y. Takahashi, S. Yaginuma, J. Ogawa, S. Fukui, T. Sato, K. Yokoyama, T. Nakamura
Physics Procedia   81 45-48   Jan 2016
© 2016 The Authors. The authors have been attempting to obtain the uniform magnetic field distribution in the space between the face-to-face HTS bulk magnets. The magnetic poles containing the HTS bulk magnets are usually characterized as non-uni...
T. Oka, T. Miyazaki, J. Ogawa, S. Fukui, T. Sato, K. Yokoyama, M. Langer
Superconductor Science and Technology   29    Dec 2015
© 2016 IOP Publishing Ltd. Melt-textured Y-Ba-Cu-O high temperature superconducting bulk magnets were fabricated by the cold seeding method with using single or twin-seed crystals composed of Nd-Ba-Cu-O thin films on MgO substrates. The behavior ...
K. Yokoyama, R. Igarashi, R. Togasaki, T. Oka
Physica C: Superconductivity and its Applications   518 117-121   Jun 2015
© 2015 Elsevier B.V. We have proposed a holed superconducting bulk magnet to trap the magnetic field efficiently in the high-performance material excited by pulsed field magnetization. Previously, a single pulsed field was applied with varying amp...
Tetsuo Oka, Hiroyuki Ota, Tatsuya Shimoda, Jun Ogawa, Satoshi Fukui, Takao Sato, Kazuya Yokoyama, Akira Murakami, Marco Langer
IEEE Transactions on Applied Superconductivity   25    Jun 2015
© 2002-2011 IEEE. In order to clarify the behavior of the magnetic flux that invade into the melt-processed Dy123-based high-temperature superconducting bulk magnet, the motions of magnetic fluxes and the phenomena of heat generation were precisel...
K. Yokoyama, R. Igarashi, R. Togasaki, T. Oka
IEEE Transactions on Applied Superconductivity   25    Jun 2015
© 2014 IEEE. Our goal is to generate a strong magnetic field using a REBCO bulk superconductor activated by pulsed field magnetization (PFM) for industrial application using the bulk magnet. As the diameter of the material increases and its critic...
Tetsuo Oka, Eri Hirayama, Yasuhiro Takahashi, Tomoaki Kanai, Jun Ogawa, Satoshi Fukui, Takao Sato, Kazuya Yokoyama, Takashi Nakamura
Physics Procedia   67 1005-1009   Jan 2015
© 2015 The Authors. A unique experimental attempt aiming to obtain a uniform magnetic field space as required for NMR has been carried out with use of HTS bulk magnets. The magnetic poles were activated as 1.8 T (North) and 1.4 T (South) at 30 K ...
T. Oka, H. Fukazawa, S. Fukui, J. Ogawa, T. Sato, M. Ooizumi, M. Tsujimura, K. Yokoyama
Physica C: Superconductivity and its Applications   496 58-62   Jan 2014
© 2013 Elsevier B.V. All rights reserved. The magnetic separation experiment to collect the Ni compounds from the waste liquid of electroless plating processes was conducted in the open-gradient magnetic separation process with the high temperatur...
K. Yokoyama, T. Tsukui, H. Mita, N. Tsubonoya, T. Oka
Physics Procedia   58 302-305   Jan 2014
© 2014 The Authors. A hole-opened bulk material has been proposed to supply magnetic flux into the large-size and high-performance bulk efficiently because superconductivity is intentionally lowered in the portion with holes. We were anxious about...
T. Oka, Y. Yamada, T. Horiuchi, J. Ogawa, S. Fukui, T. Sato, K. Yokoyama, M. Langer
Physics Procedia   58 74-77   Jan 2014
© 2014 The Authors. The flux-invasion behavior into the melt-processed Y-Ba-Cu-O bulk magnets were precisely measured and analyzed during and after their pulsed-field magnetization processes operated at 30.6 K. The materials were fabricated as the...
T. Oka, H. Fukazawa, N. Yoshizawa, Y. Takayanagi, J. Ogawa, S. Fukui, T. Sato, M. Ooizumi, M. Tsujimura, K. Yokoyama
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy   61    Jan 2014
A magnetic separation technique has been conducted to recycle the nickel (Ni) element from the waste fluid of electroless Ni plating processes. The experiment was operated using the face-to-face type electromagnet generating 1.96 T and the data wa...
Tetsuo Oka, Eri Hirayama, Tomoaki Kanai, Jun Ogawa, Satoshi Fukui, Takao Sato, Kazuya Yokoyama, Takashi Nakamura
IEEE Transactions on Applied Superconductivity   24    Jan 2014
© 2013 IEEE. The magnetic field distributions of an HTS bulk magnet system were precisely measured between the face-to-face 3.4-T magnetic poles. After the activation by 5-T field cooling magnetization, the magnetic flux density has reached the va...
T. Oka, Y. Yamada, T. Horiuchi, J. Ogawa, S. Fukui, T. Sato, K. Yokoyama, M. Langer
Journal of Physics: Conference Series   507    Jan 2014
The magnetic flux penetration into the melt-textured Y-Ba-Cu-O high temperature superconducting bulk magnets were precisely evaluated during and after the pulsed field magnetization processes operated at 30 K. The bulk magnets were carefully fabri...
T. Oka, D. Ishiduka, J. Ogawa, S. Fukui, T. Sato, K. Yokoyama, A. Murakami, H. Stopfel
Physica C: Superconductivity and its Applications   494 46-49   May 2013
The flux invasion behaviors into the Dy123 based on HTS bulk magnet were precisely measured during the iterative pulsed field magnetizations operated at 31 K. The values of magnetic flux densities were measured at various positions on the bulk mag...
T. Oka, D. Ishiduka, J. Ogawa, S. Fukui, T. Sato, K. Yokoyama, A. Murakami
Journal of Superconductivity and Novel Magnetism   26 1301-1306   Apr 2013
In order to enhance the field-trapping ability of high T c superconducting melt-textured bulk materials which act as quasi-permanent magnets when they capture the external magnetic fields, it is important to enhance the mechanical toughness of the...
Noriyo Kondo, Kazuya Yokoyama, Sumio Hosaka
Key Engineering Materials   534 99-103   Feb 2013
We propose a magnetic separation system using superconducting bulk magnets to effectively separate organic dyes in wastewater. Two key technologies are applied in this system: magnetic seeding and magnetic separation. Magnetic activated carbons (M...
K. Yokoyama, T. Oka, N. Kondo, S. Hosaka
IEEE Transactions on Applied Superconductivity   23    Feb 2013
Recent upsizing of the diameter and enhancement of performance of bulk superconductors make pulsed field magnetization difficult due to the strong magnetic shield. We propose a bulk material with small holes to supply magnetic flux into the bulk e...
K. Yokoyama, T. Oka, N. Kondo, S. Hosaka
Physica C: Superconductivity and its Applications   484 343-347   Jan 2013
Recent enlargement of the size and the performance enhancement of bulk superconductor lead to the difficulty of magnetic flux trapping by a pulsed-field magnetization. This paper proposes the bulk material with small holes which makes the role of ...
T. Oka, T. Kimura, D. Mimura, H. Fukazawa, S. Fukui, J. Ogawa, T. Sato, M. Ooizumi, K. Yokoyama, M. Tsujimura, T. Terasawa
Physica C: Superconductivity and its Applications   484 325-328   Jan 2013
The magnetic separation experiment for recycling the nickel-bearing precipitates in the waste liquid from the electroless plating processes has been practically conducted under the high gradient magnetic separation technique with use of the face-t...
K. Yokoyama, T. Oka, N. Kondo, S. Hosaka
Physics Procedia   45 261-264   Jan 2013
We have proposed that GdBa2Cu3O7-x bulk material with small holes can easily be magnetized by pulsed-field magnetization. When the fundamental experiment of applying a single pulsed field with various amplitudes was carried out, the total magnetic...
K. Yokoyama, T. Oka, K. Noto
IEEE Transactions on Applied Superconductivity   22    Jun 2012
This paper proposes an effective magnetizing method in which bulk material is magnetized by field cooling (FC) using a permanent magnet before pulsed-field magnetization (PFM) to improve the efficiency of magnetization. The concept of this method ...
T. Oka, H. Seki, D. Ishiduka, J. Ogawa, S. Fukui, T. Sato, K. Yokoyama, A. Murakami
Journal of Physics: Conference Series   400    Jan 2012
The field trapping ability of melt-textured bulk superconductors is usually restricted by the mechanical properties because of the magnetic stress induced in the samples during the activation processes which give them intense magnetic fields of se...
K. Yokoyama, T. Oka, K. Noto
Physica C: Superconductivity and its Applications   471 901-904   Nov 2011
A pulsed-filed magnetization (PFM) is an important technique for industrial applications of superconducting bulk magnets, and several advanced PFM methods are proposed to enhance the trapped field. In the well-known IMRA method, the channel throug...
T. Oka, H. Seki, T. Kimura, D. Mimura, S. Fukui, J. Ogawa, T. Sato, M. Ooizumi, H. Fujishiro, H. Hayashi, K. Yokoyama, C. Stiehler
Physica C: Superconductivity and its Applications   471 1506-1510   Nov 2011
A magnetic separation study for groundwater purification has been practically conducted by using the multi-pole magnet system. The magnetic pole was composed of 10 open magnetic spaces by arranging five HTS melt-processed bulk magnets in a line in...
T. Oka, H. Seki, J. Ogawa, S. Fukui, T. Sato, K. Yokoyama
IEEE Transactions on Applied Superconductivity   21 3356-3359   Jun 2011
Melt-textured large grain high temperature superconducting materials have a characteristic feature so as to trap the magnetic fields applied from outside, and act as quasi- permanent magnets yielding intense magnetic fields which reach values of s...
K. Yokoyama, T. Oka, K. Noto
IEEE Transactions on Applied Superconductivity   21 1657-1660   Jun 2011
We developed a small-size superconducting bulk magnet system using a 13 K refrigerator. The industrial applications of bulk magnets demand the miniaturization of the magnet apparatus as well as the enhancement of the magnetic field. Downsizing of ...
Tetsuhiro Tsukiji, Kousuke Yoshida, Kazuya Yokoyama
International Journal of Applied Electromagnetics and Mechanics   33 1653-1659   Dec 2010
We cause a low-molecular-weight liquid crystal in the nematic phase to flow between parallel plate electrodes at a constant rate. Under electric fields (in the range 0-1.0 kV/mm), magnetic fields (in the range 0.0-2.0 T, where 1 T=10000 G), and bo...
K. Yokoyama, T. Oka, K. Noto
Physica C: Superconductivity and its Applications   470 1201-1206   Nov 2010
We study the construction of superconducting permanent magnets by RE123 bulk materials and the investigation of these industrial applications such as a magnetic separation. A bulk magnet can generate strong magnetic fields exceeding 2 T, which is ...
T. Oka, K. Tanaka, T. Kimura, D. Mimura, S. Fukui, J. Ogawa, T. Sato, M. Ooizumi, K. Yokoyama, M. Yamaguchi
Physica C: Superconductivity and its Applications   470 1799-1803   Nov 2010
The magnetic separation technique in combination with high temperature superconducting bulk magnets has been investigated to purify the ground water which has been used in the coolant system for the incinerator furnace to cool the burning gas. The...
K. Yokoyama, T. Oka, K. Noto
IEEE Transactions on Applied Superconductivity   20 973-976   Jun 2010
We developed a small-superconducting bulk magnet system using a 13 K refrigerator. The industrial applications of bulk magnets demand the miniaturization of the magnet apparatus as well as the enhancement of the magnetic field. A Gifford-McMahon c...
K. Yokoyama, T. Oka, K. Noto
Physica C: Superconductivity and its Applications   469 1282-1285   Oct 2009
We developed a small superconducting bulk magnet system that was especially designed for a pulsed-field magnetization. The industrial applications of bulk magnets demand the miniaturization of the magnet apparatus as well as the enhancement of the...
T. Oka, K. Yokoyama, H. Fujishiro, K. Noto
Superconductor Science and Technology   22    Aug 2009
The heat generation and magnetic field trapping behaviors of the melt-textured single-domain Sm-Ba-Cu-O bulk superconductor have been precisely investigated in the zero-field-cooling magnetizing processes (ZFC). The temperature and magnetic flux d...
Kazuya Yokoyama, Tetsuo Oka, Koshichi Noto
IEEE Transactions on Applied Superconductivity   19 2178-2181   Jun 2009
We study on the construction of strong magnetic field by superconducting bulk magnets with RE123 bulk materials and the investigation of these industrial applications such as a magnetic separation. In this paper, we try to generate a strong magnet...
T. Oka, K. Yokoyama, H. Fujishiro, K. Noto
Journal of Physics: Conference Series   150    Jan 2009
The thermal and field trapping behaviors of melt-processed RE-Ba-Cu-O (RE=Y, Sm) bulk superconductors during their magnetization processes conducted in the zero field cooling (ZFC) were investigated in comparison with the field cooling (FC) operat...
T. Oka, H. Kanayama, K. Tanaka, S. Fukui, J. Ogawa, T. Sato, M. Yamaguchi, M. Ooizumi, K. Yokoyama, K. Noto
Journal of Physics: Conference Series   156    Jan 2009
The application of superconducting bulk magnets to the magnetic separation techniques has been investigated for the Mn-bearing waste water drained from the university laboratories. The research has been conducted in comparison with the electromagn...
K. Yokoyama, T. Oka, K. Noto
Physica C: Superconductivity and its Applications   468 2165-2169   Sep 2008
We study on the construction of superconducting permanent magnets by RE123 bulk materials and the investigation of these industrial applications such as a magnetic separation. The bulk magnets can generate strong magnetic field in comparison with ...
K. Yokoyama, T. Oka, H. Fujishiro, K. Noto
IEEE Transactions on Applied Superconductivity   18(2) 1545-1548   Jun 2008
On the pulsed-field magnetization (PFM) of superconducting bulk magnets, a detailed analysis taking into account the difference in superconducting characteristics between a growth sector boundary (GSB) and a growth sector region (GSR) parts of the...

Books etc

 
High-Temperature Superconductors: Occurrence, Synthesis and Applications
YOKOYAMA Kazuya (Part:Contributor, Chapter 17. Strong Magnetic Field Generation by Superconducting Bulk Magnets Using Various Types of Refrigerators and Considering an Efficient Magnetization)
Nova science publisher   Apr 2018   ISBN:978-1-53613-341-7

Conference Activities & Talks

 
Improvement of trapped magnetic field on HTS bulk magnet excited by pulsed field magnetization
Kazuya Yokoyama
13 Sep 2018   電気学会
実用化を目指したバルク磁石のパルス着磁による強磁場発生 [Invited]
Kazuya Yokoyama
第17回高温超電導バルク材「夏の学校」in 芝浦工大   20 Aug 2018   低温工学会
12KGM冷凍機を用いたバルク磁石のパルス着磁特性の評価
Kazuya Yokoyama, Tetsuo Oka
電気学会 金属・セラミックス 超電導機器 合同研究会   26 Jul 2018   電気学会
Magnetic field generation by various types of HTS bulk magnet systems
Kazuya Yokoyama, Tetsu Oka
The International Workshop on Material Analysis and Processing in Magnetic Fields (MAP8)   28 Jun 2018   
The strong magnetic field generation by a bulk superconductor and its applications [Invited]
Kazuya Yokoyama, Tetsu Oka
Special lecture in ITU   21 Mar 2018   
Evaluation of trapped field characteristic of bulk magnet system using various type refrigerators
Kazuya Yokoyama, Atsushi Katsuki, Atsuro Miura, Tetsuo Oka
30th International Symposium on Superconductivity (ISS2017)   15 Dec 2017   the Applied Superconductivity Constellations of Tsukuba (ASCOT)
Collecting Ni-Sulfate Compound from Electroless Plating Waste by Magnetic Separation Technique with Use of HTS Bulk Magnets
Tetsuo Oka, Sho Sasaki, Hideto Sasaki, Satoshi Fukui, Jun Ogawa, Takao Sato, Tomohito Nakano, Manabu Ooizumi, Morio Tsujimura, Kazuya Yokoyama
30th International Symposium on Superconductivity (ISS2017)   15 Dec 2017   the Applied Superconductivity Constellations of Tsukuba (ASCOT)
Magnetizing performance evaluation of HTS bulk magnet using a 12 K refrigerator with high cooling capacity
K. Yokoyama, A. Katsuki, A. Miura, T. Oka
The 10th International Workshop on Processing and Applications of Superconducting (RE)BCO Large Grain Materials (PASREG 2017)   11 Dec 2017   

Research Grants & Projects

 
Improvement of trapped field performance on a desktop-type superconducting bulk
The Japan Society for the Promotion of Science (JSPS): Grant-in-Aid for Scientific Research(C)
Project Year: 2015 - 2017    Investigator(s): YOKOYAMA Kazuya
The Japan Society for the Promotion of Science (JSPS): Grant-in-Aid for Scientific Research(B)
Project Year: 2015 - 2017    Investigator(s): OKA Tetsuo
Simplification of magnetization aiming at practical use of a small-size strong magnet
The Japan Society for the Promotion of Science (JSPS): Grant-in-Aid for Scientific Research(C)
Project Year: 2012 - 2014    Investigator(s): YOKOYAMA Kazuya
Study on magnetization of bulk superconductor and application of superconducting bulk magnet
JST Comprehensive Support Programs for Creation of Regional Innovation
Project Year: 1999 - 2004