Magnetic properties of amorphous Co_xNb_100-x alloys produced by mechanical alloying

2004/01/31 by K. D. Machado, K.D. Machado, Machado, K. D. +14
Engineering · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Magnetic Properties and Applications #Magnetic Properties of Alloys #Materials Science (cond-mat.mtrl-sci) #Metallic Glasses and Amorphous Alloys #cond-mat.mtrl-sci

paper · pdf · doi:10.48550/arxiv.cond-mat/0402014

3 figures, submitted to JMMM

arxiv created 2004/01/31 · openalex publication_date 2004/01/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Three amorphous Co_xNb_100-x alloys, Co₂₅Nb₇₅, Co₅₇Nb₄₃ and Co₈₀Nb₂₀, were produced by Mechanical Alloying starting from the elemental powders. Their magnetic properties were determined using an alternating gradient force magnetometer (AGFM), and the remanent magnetizations, saturation fields and coercive fields were obtained from the hysteresis loop. The alloys have a relatively high saturation field, which decreases as the composition becomes richer in Co. The coercivity and remanent magnetization reach an optimal value around 57% at.Co, making \em a-Co₅₇Nb₄₃ the hardest magnetic material among the three alloys. Further addition of Co produces a soft alloy.

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