Morphology and magnetic properties of FeCo particles synthesized with different compositions of Co and Fe through co-precipitation, flux treatment, and reduction

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:476

Article

Kishimoto, Mikio¹  Latiff, Hawa¹  Kita, Eiji¹  Yanagihara, Hideto¹ 

[1] Univ Tsukuba, Inst Appl Phys, Tsukuba, Ibaraki 3058573, Japan

关键词: FeCo particles with different compositions of Co and Fe;    Co-precipitation;    Flux treatment;    Reduction;    Particle size distribution;    Coercive force;    Saturation magnetization;   

DOI  :  10.1016/j.jmmm.2018.12.089

来源: Elsevier

【 摘 要 】

FeCo alloy particles with Co to Fe compositions ranging from molar ratios of 0:1-1:1 in a precursor were synthesized through co-precipitation, flux treatment, and reduction. By adding Co2+ to Fe ions, particle size was remarkably reduced to 10-50 nm from 50 to 250 nm of Fe particles. The lattice parameter calculated from the (1 1 0) peak of the (bcc) structure decreased from 0.2870 nm in Fe particles to 0.2854 nm in FeCo particles. The coercive force increased with increasing Co/Fe composition ratio, showing a value of approximately 80 kA/m at the Co/Fe composition ratio of 1.0, at which the lattice parameter corresponded to a composition of approximately Fe62Co38. A maximum saturation magnetization of approximately 160 Am-2/kg was obtained at a Co/Fe composition ratio of around 0.2-0.5.

【 授权许可】

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