Mössbauer Effect Study of Spin Relaxation in CaFe<SUB>2</SUB>O<SUB>4</SUB>

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  • Yamamoto Hisao
    The Research Institute for Iron, Steel and Other Metals, Tohoku University
  • Okada Takuya
    The Institute for Physical and Chemical Research
  • Watanabe Hiroshi
    The Research Institute for Iron, Steel and Other Metals, Tohoku University The Institute for Physical and Chemical Research
  • Fukase Masahiro
    Konishiroku Photo Industries Company Ltd.

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  • Mossbauer effect study of spin relaxation in CaFe2O4

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Abstract

Mössbauer effect measurements have been made on CaFe2O4, an antiferromagnetic oxide which has a magnetic transition at low temperatures. It has been found that the hyperfine splitting due to the internal field for the high temperature magnetic phase is subject to motional narrowing, possibly due to the thermal fluctuation of the spin correlation between weakly interacting antiferromagnetic arrays of Fe and O atoms.

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