Effect of 3d transition metal substitution on microstructure and microwave absorption properties of FeSiB nanocrystalline flakes
Effect of 3d transition metal substitution on microstructure and microwave absorption properties of FeSiB nanocrystalline flakes
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DOI：
10.1016/j.jmmm.2009.11.005
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发表时间：
2010-04
影响因子：
2.7
通讯作者：
P. Zhou;Yingli Liu;L. Deng
中科院分区：
文献类型：
--
作者：
P. Zhou;Yingli Liu;L. Deng
研究了 3d 过渡金属替代（Co 和 Ni）对 FeSiB 薄片微观结构和 GHz 吸收性能的影响。采用球磨法制备了具有纳米晶/非晶两相结构的 Fe78−xMxSi9B13(M=Co 或 Ni, x=0、5、10 和 15) 纳米晶薄片。根据取代机制，取代会减小纳米晶体的尺寸并在成分和结构上影响微波行为。成分影响导致本征磁化参数的变化；结构影响作用于交换耦合。 Fe78Si9B13 薄片的吸收带通过取代而向低频移动，而 Fe63Co15Si9B13 吸收体在 C 波段表现出良好的吸收。
Effect of 3d transition metal substitution (Co and Ni) is studied on microstructure and absorption properties of FeSiB flakes in GHz. Fe78−xMxSi9B13(M=Co or Ni, x=0, 5, 10 and 15) nanocrystalline flakes with nanocrystal/amorphous two-phase structure were prepared by ball milling. Substitution decreases the nanocrystal size and affects microwave behavior both compositionally and structurally according to the substitution mechanism. Compositional influence is contributing to the change of intrinsic magnetization parameters; structural influence works on exchange coupling. Absorption band of Fe78Si9B13flakes shifts towards lower frequency by the substitution, and Fe63Co15Si9B13absorber shows promising absorption at C-band.