Superparamagnetic and ferrimagnetic nanoparticles in glass matrix

被引：18

作者：

Edelman, IS ^{[1
]}

Ivantsov, R

Vasiliev, A

Stepanov, S

Kornilova, E

Zarubina, T

机构：

[1] Russian Acad Sci, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

[2] SI Vavilov State Opt Inst, St Petersburg 193117, Russia

来源：

PHYSICA B | 2001年 / 301卷 / 3-4期

关键词：

magnetic nanoparticles; Faraday rotation;

D O I：

10.1016/S0921-4526(01)00274-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Faraday rotation (FR) spectral, field, and temperature dependencies in oxide glasses with small additions of paramagnetic elements are investigated. Formation of ferrite nanoparticles in amorphous glass matrices is revealed by X-ray diffraction. Particles have crystal structure similar to spinel structure, their dimensions are about 10-24 nm. The FR field dependencies are typical for ferrimagnetic or superparamagnetic substances depending on particle size. Strong FR increase at the samples cooling (more than twice for some samples) in the temperature interval 105-273 K is observed. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：203 / 211

页数：9

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