JEMAA  Vol.1 No.4 , December 2009
Effect of Weak Magnetic Intergranular Phase on the Coercivity in the HDDR Nd-Fe-B Magnet
Abstract
Assuming that intergranular phase (IP) existing between adjacent grains is a weak magnetic phase, we study the effect of IP on the coercivity in the HDDR Nd-Fe-B magnet. The results indicate that the coercivity increases with the increasing IP’s thickness d, but decreases with increasing its anisotropy constant K1(0). When the structure defect thickness r0 =6nm, d=1nm and K1(0)=0.15K1 (K1 is the normal anisotropy constant in the inner part of a grain), our calculated coercivity is in agreement with available experimental data.

Cite this paper
nullM. LIU, G. HAN and R. GAO, "Effect of Weak Magnetic Intergranular Phase on the Coercivity in the HDDR Nd-Fe-B Magnet," Journal of Electromagnetic Analysis and Applications, Vol. 1 No. 4, 2009, pp. 249-253. doi: 10.4236/jemaa.2009.14038.
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