Granular Fe-Al2O3 films prepared by self-propagating high temperature synthesis

被引：13

作者：

Miagkov, VG ^{[1
]}

Polyakova, KP

Bondarenko, GN

Polyakov, VV

机构：

[1] RAS, SB, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

[2] RAS, SB, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2003年 / 258卷

关键词：

self-propagating high temperature synthesis; granular films; magnetic nanoparticles;

D O I：

10.1016/S0304-8853(02)01081-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Taking for example the initiation of the classical solid-state reaction between Fe2O3 and Al layers in films, it was shown that as a result, the granular Fe-Al2O3 films consisting of Fe nanoclusters embedded in an insulating Al2O3 matrix were made. It follows from the reaction equation that the Fe volume fraction in granular films is less than the percolation limit. This fact defines the magnetic properties of iron clusters, which are superparamagnetic. It is supposed that a nanocrystalline microstructure must be present in thin films after solid-state reaction, which occurs in self-propagating high temperature synthesis conditions. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：358 / 360

页数：3

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