Pressure-Induced Transition from a Charge-Disproportionated Antiferromagnetic State to a Charge-Uniform Ferromagnetic State in [Formula presented]

T. Kawakami, S. Nasu, T. Sasaki, K. Kuzushita, S. Morimoto, S. Endo, T. Yamada, S. Kawasaki, M. Takano

Research output: Contribution to journalArticlepeer-review

Abstract

The perovskite oxide [Formula presented] has been found to switch its electronic ground state drastically at 23 GPa through measurements of [Formula presented] Mössbauer spectroscopy and powder x-ray diffraction up to 56 GPa. In the low-pressure region a first-order transition from a charge-uniform paramagnetic metallic phase to a charge-disproportionated [Formula presented] antiferromagnetic insulating phase occurs at 207 K at 0.1 MPa and 165 K at 21 GPa, typically. Above 25 GPa, however, a charge-uniform ferromagnetic (and most probably metallic) phase persists below 300 K. This switching occurs at a lattice volume of [Formula presented].

Original languageEnglish
Number of pages1
JournalPhysical review letters
Volume88
Issue number3
DOIs
Publication statusPublished - 2002
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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