Magnetic viscosity and coercivity analysis in mechanically alloyed and melt-spun NdDyFeB magnets

被引：14
作者：
Villas-Boas, V
Gonzalez, JM
Cebollada, F
Rossignol, MF
Taylor, DW
Givord, D
机构：
[1] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, SP, Brazil
[2] CSIC, Inst Ciencia Mat, E-28006 Madrid, Spain
[3] CNRS, Lab Magnetisme Louis Neel, F-38042 Grenoble, France
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1998年 / 185卷 / 02期
关键词：
NdFeB magnets; magnetic viscosity; coercivity;
D O I：
10.1016/S0304-8853(97)01159-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work we study the temperature dependence of coercivity and magnetic viscosity in mechanically alloyed magnets of composition (Nd1-xDyx)(16)Fe76B8 (0.1 < x < 0.5) and Nd15.5Dy2.5Fe65Co10Ga0.75B6.25, and of melt-spun magnets of composition (Nd1-xDyx)(15)Fe76B9 (0.5 < x < 0.8) for temperatures between 25 and 500 K. The results are discussed in terms of the so-called global model of coercivity which provides information about the magnetic properties in the activation volume v(a), which is evaluated from magnetic viscosity measurements. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：180 / 186
页数：7
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