High Field Magnetism of Sr0.78Y0.22CoO3−δ Under High Pressure

被引：0
作者：
T. Matsunaga
T. Kida
S. Kimura
M. Hagiwara
S. Yoshida
I. Terasaki
K. Kindo
机构：
[1] Osaka University,KYOKUGEN
[2] Waseda University,Department of Applied Physics
[3] The University of Tokyo,Institute for Solid State Physics
来源：
Journal of Low Temperature Physics | 2010年 / 159卷
关键词：
High field magnetism; Spin-state transition; Pressure;
D O I：
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中图分类号：
学科分类号：
摘要：
We performed high field magnetization measurements up to 50 T on polycrystalline samples of Sr0.78Y0.22CoO3−δ at 4.2 K under high pressures up to 0.48 GPa. The magnetization at 0.21 GPa or 0.48 GPa increases with field and shows an anomaly around 30 T which is ascribed to be a field-induced spin-state transition, while the magnetization at ambient pressure shows no such anomaly and increases gradually at high fields. This peculiar magnetic behavior of this compound under pressure is attributed to small bulk modulus and susceptible spin state of Co3+ ions.
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页码：7 / 10
页数：3
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