Hyperfine magnetic fields in Fe−Co alloys and their tempera ture dependences
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We obtained57Fe hyperfine field parameters from Fe1−x-Co x alloys (0≤x≤0.6) from 77 K to 900 K. We first discuss the origin of the low temperature hyperfine fields in terms of the 3d and 4s electrons at57Fe atoms. The57Fe hyperfine magnetic field (hmf) of Fe-Co alloys depends more weakly on temperature than the hmf of pure Fe. This temperature dependence occurs because the alignment of the magnetic moments at both the Fe atoms and at the Co atoms depend on temperature in the same way as the bulk magnetization of Fe-Co alloys.
KeywordsMagnetic Field Thin Film Field Parameter Hyperfine Field Ture Dependence
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