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

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

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number012116
JournalJournal of Physics: Conference Series
Volume200
Issue numberSECTION 1
DOIs
Publication statusPublished - 2010
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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