MAGNETIC-PROPERTIES OF NANOCRYSTALLINE BARIUM HEXAFERRITE POWDERS - ANISOTROPY-FIELD AND INTERACTION EFFECTS

被引：6

作者：

PFEIFFER, H

SCHUPPEL, W

GORNERT, P

SINN, E

MULLER, R

BATLLE, X

DELMURO, MG

TEJADA, J

机构：

[1] INST PHYS HOCHTECHNOL,HELMHOLTZWEG 4,D-07743 JENA,GERMANY

[2] UNIV BARCELONA,DEPT FIS FONTAMENTAL,E-08028 BARCELONA,SPAIN

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1993年 / 127卷 / 1-2期

关键词：

D O I：

10.1016/0304-8853(93)90220-V

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The anisotropy field H(a) of nanocrystalline barium hexaferrite Powders is determined and the influence of interaction between the particles is investigated. The value of H(a) is found to be extremely high, which may be explained by surface effects. The powders show Positive interaction in the superparamagnetic regime (high temperatures) and negative interaction in the magnetic stable regime (low temperatures).

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页码：229 / 232

页数：4

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