Magnetic relaxation in a random system of interacting rodlike nanoparticles

被引：0
|
作者：
E. Z. Meilikhov
R. M. Farzetdinova
机构：
[1] Russian Research Centre Kurchatov Institute,
来源：
Journal of Experimental and Theoretical Physics | 2004年 / 98卷
关键词：
Magnetic Field; Elementary Particle; Quantum Field Theory; Relaxation Process; Magnetic Nanoparticles;
D O I：
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学科分类号：
摘要：
It is shown in the framework of the generalized mean-field approximation taking into account spatial fluctuations of the local magnetic field that the collective effect of dipole interaction in a random 3D system of identical (rodlike) magnetic nanoparticles with parallel easy magnetization axes shifts the relaxation magnetization curves towards shorter times (i.e., accelerates the relaxation process). In addition, the course of this process depends (via the demagnetizing field) on the sample shape. The interaction between nanograins affects the magnetization relaxation of a random 2D system only when the magnetic moments of the grains are perpendicular to the plane of the system.
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页码：1198 / 1204
页数：6
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