Open AccessThe effective magnetic anisotropy of nanocrystalline Fe39.4－xCo40Si9B9Nb2.6Cux alloys
Author(s) -
Han Xian-Tang,
Zhi Wang,
Xiaohua Ma,
Guangjian Wang
Publication year - 2007
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.1697
Subject(s) - nanocrystalline material , materials science , annealing (glass) , anisotropy , grain size , condensed matter physics , amorphous solid , magnetic anisotropy , magnetocrystalline anisotropy , permeability (electromagnetism) , saturation (graph theory) , magnetization , nuclear magnetic resonance , metallurgy , crystallography , magnetic field , nanotechnology , chemistry , optics , physics , biochemistry , mathematics , quantum mechanics , combinatorics , membrane
The effective magnetic anisotropy of nanocrystalline Fe39.4-xCo40Si9B9Nb2.6Cux alloysHan Xian-Tang1) Wang Zhi1) Ma Xiao-Hua1) Wang Guang-Jian2)The effective magnetic anisotropy 〈K〉 of nanocrystalline Fe39.4-xCo40Si9B9Nb2.6Cux(x=0.5,1,1.5) alloys annealed at different temperatures was investigated based on the law of approach to saturation at room temperature. The experimental results showed that the grain size D of samples with low content of Cu (x=0.5) is larger and a hard magnetic phase precipitated from the residual amorphous matrix at lower annealing temperature which lead to a higher value of 〈K〉. And with increasing content of Cu, which effectively refined the grains and retarded the formation of borides at x≥1,a clear drop tendency of 〈K〉 was observed. The correlation between 〈K〉 and D as well as 〈K〉 and initial permeability μi was also discussed.