Multifrequency magnetic resonance and blocking behavior of FexPt1-x nanoparticles

被引：11
作者：
Antoniak, C. [1 ]
Lindner, J. [1 ]
Salgueirino-Maceira, V. [1 ]
Farle, M. [1 ]
机构：
[1] Univ Duisburg Essen, Fachbereich Phys, Expt Phys AG Farle, D-47048 Duisburg, Germany
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2006年 / 203卷 / 11期
关键词：
D O I：
10.1002/pssa.200567114
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Multifrequency ferromagnetic resonance well above the blocking temperature was used to determine the composition dependent g-factor in wet-chemically synthesized FexPt1-x nanoparticles with mean diameters around 3 nm. The magnetic relaxation process in these experiments is found to be non-Gilbert like. To obtain the blocking temperature and the effective anisotropy, zero-field-cooled magnetometry data are simulated using a model of non-interacting particles. In this simulation, the temperature dependence of the effective anisotropy has to be taken into account for accurate results. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：2968 / 2973
页数：6
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