Neutron diffraction study of the Mn spin correlations in Bi 0.46Ca 0.54Mn 0.95Cr 0.05O 3

Chi Hung Lee, Chun Ming Wu, Daniel Hsu, Chin Wei Wang, Chih Jen Wang, Wen Hsien Li, Chun Chuen Yang, Jirong Sun, Jeffrey W. Lynn

Research output: Contribution to journalArticlepeer-review

Abstract

The magnetic and transport properties of 5% Cr-doped Bi 0.46Ca 0.54Mn 0.95Cr 0.05O 3 have been investigated using magnetic susceptibility, specific heat, and neutron diffraction measurements. The compound crystallizes into an orthorhombic Pbnm symmetry. Charge ordering is revealed below 285 K. The thermal behavior of the charge transport can be described by three-dimensional variable range hopping conduction. The Mn spins become ordered below 90 K, which is significantly lower than the value of 140 K reported for the Cr-free compound. However, short-range magnetic correlations persist up to much higher temperatures.

Original languageEnglish
Article numberSB013
JournalJournal of the Physical Society of Japan
Volume80
Issue numberSUPPL. B
DOIs
StatePublished - Dec 2011

Keywords

  • CMR
  • Magnetic correlation
  • Magnetic structure
  • Neutron powder diffraction

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