Magnetic properties of Sr0.78Y0.22CoO 3-δ under high pressure

Takahiro Matsunaga, Takanori Kida, Shojiro Kimura, Masayuki Hagiwara, Shin Yoshida, Ichiro Terasaki

研究成果: Conference article査読

2 被引用数 (Scopus)

抄録

We have investigated the temperature dependence of magnetization in a polycrystalline sample of Sr0.78Y0.22CoO 3-δ under high pressure of up to 0.52 GPa. It turned out that this sample shows the large pressure dependence of Tc and magnetization. We found that the pressure derivative of TC, dT C/dP, is -432 K/GPa for P < 0.1 GPa and -14 K/GPa for P > 0.1 GPa. From comparison with Ca-substituted samples, we evaluate the bulk modulus to be 83 GPa. The large pressure dependence is attributed to the small bulk modulus of this oxide and sensitive spin states of Co ions.

本文言語English
論文番号012116
ジャーナルJournal of Physics: Conference Series
200
SECTION 1
DOI
出版ステータスPublished - 2010
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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