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Acta Metall Sin  2005, Vol. 41 Issue (3): 317-320     DOI:
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Exchange-coupling interaction and effective anisotropy in nanocomposite permanent materials
LIU Limei; SHI Yanjing; NIE Liying; LI Aijun; HU Jinjiang; CHEN Wei
College of Physics; Hebei Normal University; Shijiazhuang 050016
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LIU Limei; SHI Yanjing; NIE Liying; LI Aijun; HU Jinjiang; CHEN Wei. Exchange-coupling interaction and effective anisotropy in nanocomposite permanent materials. Acta Metall Sin, 2005, 41(3): 317-320 .

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Abstract  The exchange-coupling interaction between magnetically soft and hard grains in nanocomposite Nd2Fe14B/α-Fe and their effects on the effective anisotropy of materials have been investigated. By testing six different functions, series of curves of effective anisotropy constant versus grain size and volume fraction of the soft phase were obtained. The calculated results show that the effective anisotropy constant decreases with the reduction of grain size and increases with the decrease of the volume fraction of the soft phase. The calculated curves resemble the experimental results.
Key words:  Nd-Fe-B/α-Fe      nanocomposite      exchange-coupling Interaction      
Received:  22 April 2004     
ZTFLH:  TB383  
  O469  

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https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y2005/V41/I3/317

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