MAGNETIC HARDENING IN AS-CAST ND-RICH ND-FE-B MAGNETS

被引：2
|
作者：
SINGLETON, EW
TSOUKATOS, A
ZHANG, Y
HADJIPANAYIS, GC
机构：
[1] Department of Physics and Astronomy, University of Delaware, Newark
来源：
JOURNAL OF APPLIED PHYSICS | 1991年 / 69卷 / 08期
关键词：
D O I：
10.1063/1.347860
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The microstructure of as-cast Nd-rich Nd-Fe-B alloys has been studied in detail and correlated with their magnetic hysteresis behavior. A hard magnetic phase with a Curie temperature around 250-degrees-C and a coercivity of 5.2 kOe has been observed in an arc-melted Nd80Fe15B5 sample. Annealing at around 600-degrees-C led to a transformation of this phase to Nd2Fe14B which is present in the form of small crystallites randomly distributed in a nonmagnetic Nd-rich matrix, resulting in coercivities greater than 14 kOe. The Stoner and Wohlfarth model of single domain particles has been used to discuss the large coercivities.
引用
收藏
页码：5820 / 5822
页数：3
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