Effect of titanium addition on the magnetic property of Nd 2Fe14B/α-Fe nanocomposite alloys

被引：0
|
作者：
Zhang P. [1 ]
Pan M. [1 ]
Jiao Z. [1 ]
Wu Q. [1 ]
Ge H. [1 ]
Fu R. [1 ]
机构：
[1] Department of Materials Science and Engineering, China Jiliang University
来源：
Journal of Rare Earths | 2010年 / 28卷 / 06期
关键词：
Coercivity; Magnetic property; Nanocomposite alloy; Rare earths;
D O I：
10.1016/S1002-0721(09)60212-X
中图分类号：
学科分类号：
摘要：
Rapidly solidified nanocrystalline a-Fe/Nd2Fe14B alloys with enhanced coercivity were obtained by melt spinning. The effects of Ti addition on the microstructure and magnetic properties of the nanocomposite a-Fe/Nd2Fe14B alloys were investigated by X-ray diffraction (XRD) and superconducting quantum interference device (SQUID) magnetometer. The analysis of XRD showed that Va-Fe estimated to be about 35.3 in the Ti-free a-Fe/Nd2Fe14B nanocomposites decreased down to 26.5 as the addition of was 5 at. Ti. Accordingly, adding Ti resulted in relevant improvements of magnetic properties, especially of the coercivity Hc from 595 kA/m up to 1006 kA/m. The dependence of M irrev(H)/2Mr on the reverse field H indicated that nucleation was the dominating mechanism for the magnetization reversal in these nanocomposites. The analysis of the temperature dependence of the demagnetization curve in the a-Fe/Nd2Fe14B nanocomposite magnets indicated that a reduction of aex could play a leading role in an increase in the coercivity of Ti-doped sample. © 2010 The Chinese Society of Rare Earths.
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页码：944 / 947
页数：3
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