High field magnetism of Sr 0.78Y 0.22CoO 3-δ under high pressure

T. Matsunaga, T. Kida, S. Kimura, M. Hagiwara, S. Yoshida, I. Terasaki, K. Kindo

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We performed high field magnetization measurements up to 50 T on polycrystalline samples of Sr 0.78Y 0.22CoO 3-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 Co 3+ ions.

Original languageEnglish
Pages (from-to)7-10
Number of pages4
JournalJournal of Low Temperature Physics
Issue number1-2
Publication statusPublished - 2010 Apr


  • High field magnetism
  • Pressure
  • Spin-state transition


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