Magnetic properties of bulk polycrystalline Pr1-xNdx (x=0, 0.8)FeB permanent magnets

doi:10.1088/1674-1056/23/4/047501

Abstract For spin reorientation (SRT), the applications of sintering NdFeB permanent magnets are limited at low temperature. The sintering PrFeB permanent magnet (PM) presents no SRT and shows excellent magnetic properties at low temperature. The magnetic properties of bulk polycrystalline sintering Pr_1-xNd_xFeB (x=0 and 0.8 correspond to P42H and N50M respectively) are studied in this paper. The results show that magnetic properties and stability of N50M are better than those of 42H at room temperature. With the decrease of temperature, the parameters of B_r, H_cb, and H_ci of P42H present a nearly linear increasing trend; B_r and H_cb of N50M first increase and then decline, H_ci presents an increasing trend. At 77 K, B_r, H_ci, and J_r of P42H are increased by 18.7%, 308%, and 17.1% respectively over than those at 300 K; at 120 K, B_r, H_ci, and J_r of N50M are increased by about 16.19%, 245%, and 12.6% respectively over than those at 300 K. The magnetic properties of P42H are better than those of N50M at low temperature. The sintering PrFeB is the preferred PM in various low-temperature devices.

Keywords: PrFeB NdFeB bulk polycrystalline magnetic properties

Received: 31 July 2013
Revised: 18 August 2013
Accepted manuscript online:

PACS:	75.50.Ww	(Permanent magnets)
	75.90.+w	(Other topics in magnetic properties and materials)
	41.85.Lc	(Particle beam focusing and bending magnets, wiggler magnets, and quadrupoles)

Fund: Project supported by the Natural Science Foundation of Shanghai, China (Grant No. 11ZR1445500) and the National Natural Science Foundation of China (Grant No. 11175238).

Corresponding Authors: He Yong-Zhou
E-mail: heyongzhou@sinap.ac.cn

About author: 75.50.Ww; 75.90.+w; 41.85.Lc

Cite this article:

He Yong-Zhou (何永周), Wu Hong-Ping (吴红平), Zou Zhi-Qiang (邹志强) Magnetic properties of bulk polycrystalline Pr_1-xNd_x (x=0, 0.8)FeB permanent magnets 2014 Chin. Phys. B 23 047501

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Magnetic properties of bulk polycrystalline Pr1-xNdx (x=0, 0.8)FeB permanent magnets

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Magnetic properties of bulk polycrystalline Pr_1-xNd_x (x=0, 0.8)FeB permanent magnets