High-field magnetostriction measurements on Fe 14 Nd 2 B magnets
High-field magnetostriction measurements on Fe 14 Nd 2 B magnets
复制标题
Fe 14 Nd 2 B 磁体的高场磁致伸缩测量
DOI：
10.1109/tmag.1986.1064560
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发表时间：
1986
影响因子：
2.1
通讯作者：
P. Flanders
中科院分区：
文献类型：
--
作者：
C. Graham;P. Flanders
在室温下，对美国两个生产厂家的取向多晶Fe 14 Nd 2 B磁体在高达144 kOe的磁场下进行了磁致伸缩测量。普通的磁致伸缩与铁的磁致伸缩相当（10 × 10-6）。高场强制磁致伸缩是积极的所有方向的字段和测得的应变，强烈的各向异性，并类似于正常的铁磁材料的幅度。在平行于取向轴的磁场作用下，磁致伸缩系数为1.3 × 10- 9 Oe-1;在垂直于取向轴的磁场作用下，磁致伸缩系数为2.1 × 10- 9 Oe-1。
Magnetostriction measurements have been made on aligned polycrystalline Fe 14 Nd 2 B magnets from two US manufacturers at applied fields up to 144 kOe at room temperature. The ordinary magnetostriction is comparable to that of iron (10 × 10-6). The high field forced magnetostriction is positive for all orientations of the field and of the measured strain, strongly anisotropic, and similar in magnitude to normal ferromagnetic materials. The forced volume magnetostriction is 1.3 × 10-9Oe-1with the field parallel to the alignment axis, and 2.1 × 10-9Oe-1with the field perpendicular.