Spin structure change in Co-substituted BiFeO3

Hajime Yamamoto, Takumi Kihara, Kengo Oka, Masashi Tokunaga, Ko Mibu, Masaki Azuma

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13 Citations (Scopus)

Abstract

The spin structure in BiFe1-xCoxO3 (x = 0.05, 0.10, 0.15, 0.20) was investigated as a function of Co substitution, temperature, and magnetic field. It was found that the cycloidal spin structure of BiFeO3 changed to a collinear one with spin canting and composition-independent spontaneous magnetization of ∼0.25 μB/f.u. for the Co substituted samples on heating. The collinear phase was stabilized under magnetic fields. The spin structure change was clarified also by the temperature dependence of 57Fe Mössbauer spectra, and the results indicated the first order nature of this transition.

Original languageEnglish
Article number064704
Journaljournal of the physical society of japan
Volume85
Issue number6
DOIs
Publication statusPublished - 2016 Jun 15
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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