Structure-property relationship in the ordered-perovskite-related oxide Sr3.12 Er0.88 Co4 O10.5

Shintaro Ishiwata, Wataru Kobayashi, Ichiro Terasaki, Kenichi Kato, Masaki Takata

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

Synchrotron x-ray-diffraction patterns were measured and analyzed for a polycrystalline sample of the room-temperature ferromagnet Sr3.12 Er0.88 Co4 O10.5 from 300 to 650 K, from which two structural phase transitions were found to occur successively. The higher-temperature transition at 509 K is driven by ordering of the oxygen vacancies, which is closely related to the metallic state at high temperatures. The lower-temperature transition at 360 K is of first order, at which the ferromagnetic state suddenly appears exhibiting a jump in magnetization and resistivity. Based on the refined structure, possible spin and orbital models for the magnetic order are proposed.

Original languageEnglish
Article number220406
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume75
Issue number22
DOIs
Publication statusPublished - 2007 Jun 22
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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