Heat capacity and ac-susceptibility measurements of SmOs4Sb 12 under high pressure

Tatsuo C. Kobayashi; Kazuki Miyazawa; Keisuke Tabira; Yoichi Ikeda; Shingo Araki; Hisashi Kotegawa; Hitoshi Sugawara; Daisuke Kikuchi; Hideyuki Sato

doi:10.1143/JPSJS.80SA.SA034

Heat capacity and ac-susceptibility measurements of SmOs₄Sb ₁₂ under high pressure

Tatsuo C. Kobayashi, Kazuki Miyazawa, Keisuke Tabira, Yoichi Ikeda, Shingo Araki, Hisashi Kotegawa, Hitoshi Sugawara, Daisuke Kikuchi, Hideyuki Sato

IMR - Materials Property Division

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Heat capacity and ac-susceptibility measurements under high pressure are carried out in SmOs₄Sb₁₂. Application of pressure increases the Curie temperature T_C and enhances the heat-capacity jump at T_C. On the other hand, the peak value of ac-susceptibility at T_C decreases above 1 GPa and then almost vanishes at 3.6 GPa. These experimental facts suggest that the ordered state in SmOs₄Sb ₁₂ is not simple ferromagnetic state but possibly multipolar ordered state.

Original language	English
Article number	SA034
Journal	Journal of the Physical Society of Japan
Volume	80
Issue number	SUPPL. A
DOIs	https://doi.org/10.1143/JPSJS.80SA.SA034
Publication status	Published - 2011 Jul

Keywords

Heat capacity
Heavy fermion
Pressure effect
Skutterudite
Susceptibility

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abstract = "Heat capacity and ac-susceptibility measurements under high pressure are carried out in SmOs4Sb12. Application of pressure increases the Curie temperature TC and enhances the heat-capacity jump at TC. On the other hand, the peak value of ac-susceptibility at TC decreases above 1 GPa and then almost vanishes at 3.6 GPa. These experimental facts suggest that the ordered state in SmOs4Sb 12 is not simple ferromagnetic state but possibly multipolar ordered state.",

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T1 - Heat capacity and ac-susceptibility measurements of SmOs4Sb 12 under high pressure

AU - Kobayashi, Tatsuo C.

AU - Miyazawa, Kazuki

AU - Tabira, Keisuke

AU - Ikeda, Yoichi

AU - Araki, Shingo

AU - Kotegawa, Hisashi

AU - Sugawara, Hitoshi

AU - Kikuchi, Daisuke

AU - Sato, Hideyuki

PY - 2011/7

Y1 - 2011/7

N2 - Heat capacity and ac-susceptibility measurements under high pressure are carried out in SmOs4Sb12. Application of pressure increases the Curie temperature TC and enhances the heat-capacity jump at TC. On the other hand, the peak value of ac-susceptibility at TC decreases above 1 GPa and then almost vanishes at 3.6 GPa. These experimental facts suggest that the ordered state in SmOs4Sb 12 is not simple ferromagnetic state but possibly multipolar ordered state.

AB - Heat capacity and ac-susceptibility measurements under high pressure are carried out in SmOs4Sb12. Application of pressure increases the Curie temperature TC and enhances the heat-capacity jump at TC. On the other hand, the peak value of ac-susceptibility at TC decreases above 1 GPa and then almost vanishes at 3.6 GPa. These experimental facts suggest that the ordered state in SmOs4Sb 12 is not simple ferromagnetic state but possibly multipolar ordered state.

KW - Heat capacity

KW - Heavy fermion

KW - Pressure effect

KW - Skutterudite

KW - Susceptibility

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ER -

Heat capacity and ac-susceptibility measurements of SmOs₄Sb ₁₂ under high pressure

Abstract

Keywords

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