Superparamagnetic regime in gamma-Fe2O3 nanoparticle systems; Effect of the applied magnetic field

被引：4

作者：

Vaz, C

Godinho, M

Dormann, JL

Nogues, M

Ezzir, A

Tronc, E

Jolivet, JP

机构：

[1] CNRS URA DII531, LMOV, F-78035 VERSAILLES, FRANCE

[2] UNIV PARIS 06, LCMC, URA 1466, F-75252 PARIS 05, FRANCE

来源：

SYNTHESIS AND PROPERTIES OF MECHANICALLY ALLOYED AND NANOCRYSTALLINE MATERIALS, PTS 1 AND 2 - ISMANAM-96 | 1997年 / 235-2卷

关键词：

nanoparticles; magnetization measurements; superparamagnetism;

D O I：

10.4028/www.scientific.net/MSF.235-238.813

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Zero field cooled magnetization measurements have been performed under low applied fields on samples of gamma-Fe2O3 particles dispersed in a polymer matrix. Samples of particle mean diameter < D > = 10.1, 6.9 and 4.6 nm, with different volume concentration, were studied in two measurement geometries respectively H-parallel to and H-perpendicular to to the sample surface. The superparamagnetic regime was analysed through a Curie-Weiss type law. The results for the superparamagnetic Curie temperatures show a strong variation with H-app, which seems independent of the interactions between particles.

引用

页码：813 / 817

页数：5

共 7 条

[1]

DORMAN JL, 1996, ADV CHEM PHYSICS, V98

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