Magnetic properties of maghemite nanoparticle systems: surface anisotropy and interparticle interaction effects

被引：121

作者：

Fiorani, D

Testa, AM

Lucari, F

D'Orazio, F

Romero, H

机构：

[1] ICMAT CNR, Area Ricerca Roma, I-00010 Monterotondo, Rome, Italy

[2] Univ Aquila, Dipartimento Fis, I-67010 Coppito, Italy

[3] INFM, I-67010 Coppito, Italy

[4] Univ Los Andes, Fac Ciencias, Dept Fis, Merida 5101, Venezuela

来源：

PHYSICA B-CONDENSED MATTER | 2002年 / 320卷 / 1-4期

关键词：

fine particles; maghemite;

D O I：

10.1016/S0921-4526(02)00659-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The static and dynamic magnetic properties of powders of maghemite nanoparticles with average diameter D = 2.7, 4.6 and 8.7 nm have been investigated by magnetisation, AC susceptibility at variable frequency (5 < nu < 10(4) Hz) and Mossbauer spectroscopy measurements. The results provide an insight into the correlation between intra-particle and inter-particle effects. (C) 2002 Elsevier Science B.V. All rights reserved.

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收藏

页码：122 / 126

页数：5

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