HIGH COERCIVITY IN SM2FE17NX MAGNETS

被引：219
作者：
SCHNITZKE, K
SCHULTZ, L
WECKER, J
KATTER, M
机构：
[1] Siemens AG, Research Laboratories, Erlangen
来源：
APPLIED PHYSICS LETTERS | 1990年 / 57卷 / 26期
关键词：
D O I：
10.1063/1.104202
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Using mechanical alloying and a subsequent two-step heat treatment we produced magnetically isotropic microcrystalline Sm2Fe17N(x) samples with room-temperature coercivities up to 24 kA/cm (30 kOe). The remanence and the energy product are equivalent to similarly prepared Nd-Fe-B samples, but the properties at elevated temperatures are superior because of the high Curie temperature of 470-degrees-C and the large anisotrophy field of 14 T at room temperature. From differential scanning calorimetry it is concluded that the 2:17 nitride is metastable. It decomposes into Sm nitride and alpha-fe above 600-degrees-C.
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页码：2853 / 2855
页数：3
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