Exchange-coupling interaction and effective anisotropy in nanocomposite permanent materials

Acta Metall Sin

2005, Vol. 41

Issue (3): 317-320 DOI:

Research Articles

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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

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	LIU Limei
	SHI Yanjing
	NIE Liying
	LI Aijun
	HU Jinjiang
	CHEN Wei

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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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