High-field magnetization behavior in random anisotropy amorphous Co-Er alloys
1994; American Institute of Physics; Volume: 75; Issue: 10 Linguagem: Inglês
10.1063/1.355382
ISSN1520-8850
AutoresH. Lassri, L. Driouch, R. Krishnan,
Tópico(s)Theoretical and Computational Physics
ResumoAmorphous Co1−xErx ribbons with x=55 and 65 were prepared by the melt-spinning technique. Magnetization measurements were carried out in the temperature range 4–100 K under high magnetic fields up to 20 T. Even at 20 T the saturation is not fully attained. Assuming that Co has no moment in the alloy with x=65 the Er moment is found to be 7.0μB which indicates a speromagnetic spin structure. The Co moment in the alloy with x=55 is then found to be 0.1μB, which is negligibly small. By analyzing the approach to saturation using Chudnovsky’s theory we have extracted some fundamental parameters.
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