Frustrated Orders in the Perovskite (Bi0.5Sr0.5)CrO3

Luis Ortega-San-Martin, Anthony J. Williams, Alistair Storer, J. Paul Attfield

Research output: Contribution to journalArticlepeer-review

Abstract

A new perovskite, (Bi0.5Sr0.5)CrO3, has been prepared at 1000 degrees C and ambient pressure, although BiCrO3 and SrCrO3 are both high pressure phases. The crystal structure is rhombohedral (R (3) over barc, a = 5.4652(5) and c = 13.3502(2) angstrom at 300 K). Well-defined local Bi3+ displacements are evident despite an absence of long-range Bi/Sr cation order, but the degree of ferroelectric order is unclear. Long range G-type antiferromagnetic order occurs below 30 K; however, the low value of the ordered magnetic moment (1.2 mu(B)), a high frustration index, and low temperature divergence of zero field and field cooled susceptibilities show that a substantial glassy component is also present.

Original languageEnglish
Pages (from-to)2436-2441
Number of pages6
JournalChemistry of Materials
Volume21
Issue number12
DOIs
Publication statusPublished - 23 Jun 2009

Keywords

  • OXIDE FUEL-CELLS
  • X-RAY-DIFFRACTION
  • MAGNETIC-PROPERTIES
  • CRYSTAL-STRUCTURE
  • BICRO3
  • PRESSURE
  • NEUTRON
  • BIMNO3

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