Quadruple superstructure with antiferroic ionic displacements in B i1-x S mxFe O3

Y. Horibe, M. Nomoto, T. Inoshita, K. Watanabe, S. W. Cheong, Y. Inoue, Y. Koyama

研究成果: Article査読

3 被引用数 (Scopus)

抄録

Crystallographic and morphologic features of quadruple and double superstructures in Bi1-xSmxFeO3 with 0≤x≤0.40 were investigated by x-ray powder diffraction and transmission electron microscopy. The presence of a quadruple superstructure accompanied by antiferroic ionic displacements was found near the morphotropic phase boundary between the R3c phase (0<x<0.10) and the Pnma phase (0.25≤x≤0.40). The quadruple superlattice phase coexists with a ferroelectric R3c phase at x=0.15. These superstructures were found to originate from the freezing of multiple phonon modes related to transverse wave ionic displacements. These findings provide further insight towards understanding the complexity of rare-earth-doped BiFeO3.

本文言語English
論文番号024105
ジャーナルPhysical Review B
100
2
DOI
出版ステータスPublished - 2019 7 12

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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