MAGNETIZATION PROCESSES IN ND4FE77B19 PERMANENT MAGNETIC-MATERIALS

被引：29

作者：

SCHNEIDER, J ^{[1
]}

ECKERT, D ^{[1
]}

MULLER, KH ^{[1
]}

HANDSTEIN, A ^{[1
]}

MUHLBACH, H ^{[1
]}

SASSIK, H ^{[1
]}

KIRCHMAYR, HR ^{[1
]}

机构：

[1] VIENNA TECH UNIV,INST EXPTL PHYS,A-1040 VIENNA,AUSTRIA

来源：

MATERIALS LETTERS | 1990年 / 9卷 / 5-6期

关键词：

D O I：

10.1016/0167-577X(90)90129-A

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structural analysis of Nd4Fe77B19 magnets, which are magnetically isotropic, indicates magnetic particles smaller than or equal to the critical single domain particle diameters. No domain walls are visible in the demagnetized state and in the remanent one. The volume fraction of the Nd2Fe14B phase is 20%. The high value of Br, is attributed to an interaction field Hint between the magnetic grains (exchange and magnetostatic interaction). A simple mean-field approximation for Ht gives the right order of Br and of the initial susceptibility. © 1990.

引用

页码：201 / 203

页数：3