Mossbauer analysis of the phase distribution present in nanoparticulate Fe/SiO2 samples

被引：5

作者：

de Julián, C ^{[1
]}

Alcázar, GAP

Cebollada, F

Montero, MI

González, JM

Marco, JF

机构：

[1] CSIC, Inst Ciencia Mat, E-28049 Madrid, Spain

[2] CSIC, Inst Quim Fis Rocasolano, E-28006 Madrid, Spain

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1999年 / 203卷

关键词：

Mossbauer analysis; nanoparticles; coercivity;

D O I：

10.1016/S0304-8853(99)00219-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Results are presented on the phase distribution and magnetic properties of nanoparticulate Fe/SiO2, samples prepared by high-energy ball milling. From our data, we suggest that the elevated coercivities measured in the samples are linked to the coupling of the core of the particles (alpha-Fe) with a highly disordered phase present in their surface region and whose behavior exhibits some similarities with a spin-glass phase. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：175 / 177

页数：3

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