3-DIMENSIONAL MICROMAGNETIC ANALYSIS OF STABILITY IN FINE MAGNETIC GRAINS

被引：47

作者：

ENKIN, RJ ^{[1
]}

WILLIAMS, W ^{[1
]}

机构：

[1] UNIV EDINBURGH, DEPT GEOL & GEOPHYS, EDINBURGH EH9 3JW, SCOTLAND

来源：

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH | 1994年 / 99卷 / B1期

关键词：

D O I：

10.1029/93JB02637

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

We examine the stability of magnetic remanences in grains of magnetite near the critical single-domain grain size (d(o)). The magnetic structure of a grain is followed during a 1800 magnetization reversal, and it is shown that noncoherent reversals can occur even in grains smaller than d(o). The energy barrier to noncoherent reversal is much lower than that of coherent rotation, so that pseudo-single-domain grain behavior will be exhibited by grains significantly smaller than d(o).

引用

页码：611 / 618

页数：8

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