THE MAGNETIC-HYPERFINE-FIELD DISTRIBUTION IN ALUMINOUS HEMATITE

被引：6

作者：

BOCQUET, S

DEGRAVE, E

机构：

[1] STATE UNIV GHENT,DEPT SUBATOMIC & RADIAT PHYS,MAGNETISM LAB,B-9000 GHENT,BELGIUM

[2] MONASH UNIV,DEPT PHYS,CLAYTON,VIC 3168,AUSTRALIA

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1994年 / 6卷 / 34期

关键词：

D O I：

10.1088/0953-8984/6/34/014

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Mossbauer spectra of two synthetic aluminium-substituted haematites have been fitted with a model magnetic-hyperfine-field distribution which takes the form of a Boltzmann distribution for the z component of the sublattice magnetization. Good fits were obtained, and the hyperfine-field distribution is attributed to moment fluctuations on a longer timescale than the measurement time for Fe-57 Mossbauer spectroscopy. The fit parameters were compared with the predictions of a mean-field model for magnetic ordering in a diamagnetically substituted antiferromagnet.

引用

页码：6825 / 6832

页数：8

共 10 条

[1] DYNAMIC MAGNETIC PHENOMENA IN FINE-PARTICLE GOETHITE [J].