2011年
Quadrupole Ordering and Rattling in Clathrate Compound Pr3Pd20Ge6
INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2010)
- 巻
- 273
- 号
- 開始ページ
- 012002-1
- 終了ページ
- 012002-2
- 記述言語
- 英語
- 掲載種別
- 研究論文(国際会議プロシーディングス)
- DOI
- 10.1088/1742-6596/273/1/012002
- 出版者・発行元
- IOP PUBLISHING LTD
We have studied quadrupole ordering and rattling in clathrate compound Pr3Pd20Ge6 using ultrasonic measurements. The softening were observed in temperature dependence of elastic constants C-11, (C-11 - C-12)/2 and C-44. The C-11 and (C-11 - C-12)/2 show minimums at 250 mK indicating a transition point to an antiferroquadrupole ordered phase due to a F3 doublet ground state at 8c site. Furthermore, the C-11, (C-11 - C-12)/2 and C-44 exhibit discontinuitive anomalies at 60 mK revealing a ferroquadrupole ordering due to a F-5 triplet ground state at 4a site. Two distinctive ultrasonic dispersions caused by thermally activated F-5-type rattling were observed in C-44 around 15 K and 25 K.
- リンク情報
- ID情報
-
- DOI : 10.1088/1742-6596/273/1/012002
- ISSN : 1742-6588
- Web of Science ID : WOS:000291224100002