Effects of B-site disorder in Sr2FeMoO6 with double perovskite structure

Yutaka Moritomo, Naoyuki Shimamoto, Sheng Xu, Akihiko Machida, Eiji Nishibori, Masaki Takata, Makoto Sakata, Arao Nakamura

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Heat treatment effects on the physical properties have been investigated for Sr2FeMoO6 single crystals with double perovskite structure. We have evaluated the occupancy g of the Fe3+ ion on one sublattice of the perovskite-B site by Rietveld refinement of the synchrotron-radiation X-ray powder patterns. Both the saturation magnetization Ms and critical temperature Tc for the ferrimagnetic transition decrease linearly with g in the large-g region (g ≥ ∼0.84), but begin to deviate from the empirical relations for g ≤ ∼ 0.84. We interpreted this behavior in terms of variation of the correlation length of the spin ordering.

Original languageEnglish
Pages (from-to)L672-L674
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume40
Issue number7 A
DOIs
Publication statusPublished - 2001 Jul 1
Externally publishedYes

Keywords

  • B-site disorder
  • Double perovskite
  • Floating-zone method
  • Magnetoresistance

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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