| Magnetic properties of bulk polycrystalline Pr1-x Ndx（x=0,0.8）FeB permanent magnets |
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| 引用本文： | 何永周,吴红平,邹志强.Magnetic properties of bulk polycrystalline Pr1-x Ndx（x=0,0.8）FeB permanent magnets[J].中国物理 B,2014(4):562-566. |
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| 作者姓名： | 何永周 吴红平 邹志强 |
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| 作者单位： | [1]Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China [2]Zhejiang lnnuovo Magnet Co., Ltd., Dongyang 322118, China [3]shanghai Jiaotong University, Shanghai 200240, China |
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| 基金项目： | Project supported by the Natural Science Foundation of Shanghai,China(Grant No.11ZR1445500);the National Natural Science Foundation of China(Grant No.11175238) |
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| 摘 要： | 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 Prl-xNdxFeB （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 ofBr, Hcb, and Hci of P42H present a nearly linear increasing trend; Br and Hcb of N50M first increase and then decline, Hci presents an increasing trend. At 77 K, Br, Hci, and Jr of P42H are increased by 18.7%, 308%, and 17.1% respectively over than those at 300 K; at 120 K, Br, Hci, and Jr 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.
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| 关 键 词： | 永久磁铁 磁特性 烧结NdFeB 多晶 低温设备 HCI SRT 氯代苯 |
Magnetic properties of bulk polycrystalline Pr_(1-x) Nd_x(x=0,0.8)FeB permanent magnets |
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| 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 Pr1-xNdxFeB(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 Br, Hcb, and Hci of P42H present a nearly linear increasing trend; Br and Hcb of N50M first increase and then decline, Hci presents an increasing trend. At 77 K, Br,Hci, and Jr of P42H are increased by 18.7%, 308%, and 17.1% respectively over than those at 300 K; at 120 K, Br, Hci,and Jr 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. |
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| Keywords: | PrFeB NdFeB bulk polycrystalline magnetic properties |
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