Magnetic anisotropy of a system of nanocrystalline BaO•6Fe2O3 particles

被引：18

作者：

Golubenko, ZV ^{[1
]}

Ol'khovik, LP

Popkov, YA

Sizova, ZI

Kamzin, AS

机构：

[1] Kharkov State Univ, UA-310077 Kharkov, Ukraine

[2] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia

来源：

PHYSICS OF THE SOLID STATE | 1998年 / 40卷 / 10期

关键词：

Spectroscopy; Particle Size; Anisotropy; Ferrite; State Physics;

D O I：

10.1134/1.1130642

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The anisotropy of a system of barium ferrite particles with an average diameter of 60 nm has been studied. The effective anisotropy constant has been determined in the temperature range from 4.2 K to T-c by the law governing approach to saturation magnetization. The observed deviation from the magnetocrystalline anisotropy constant is explained as due to a negative contribution of the "surface" anisotropy constant. An estimate is made of this contribution as a function of particle size. (C) 1998 American Institute of Physics. [S1063-7834(98)02610-0].

引用

页码：1718 / 1720

页数：3

共 10 条

[1] NONCOLLINEAR SPIN ARRANGEMENT IN ULTRAFINE FERRIMAGNETIC CRYSTALLITES [J].