Nanoparticle magnetism

被引：204
作者：
Papaefthymiou, Georgia C. [1 ,2 ]
机构：
[1] Villanova Univ, Dept Phys, Villanova, PA 19073 USA
[2] NCSR Demokritos, Inst Mat Sci, Athens 15310, Greece
来源：
NANO TODAY | 2009年 / 4卷 / 05期
关键词：
Superparamagnetism; Finite-size effects; Surface effects; Intrinsic spin structure; Exchange-bias; Monte Carlo simulations; MAGNETIZATION REVERSAL; SIZE; MAGHEMITE; RELAXATION; FERROMAGNETISM; CRYSTALLINE; SPINTRONICS; ANISOTROPY; DISORDER; FERRITIN;
D O I：
10.1016/j.nantod.2009.08.006
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The current status of fundamental physics that govern nanoparticle magnetism is reviewed. Emphasis is placed on studies of the particles' intrinsic spin structure as influenced by surface and finite-size effects. Theories of dynamic spin fluctuation and spin reversal processes for uniaxial, isolated magnetic nanoparticles are presented, as applied primarily to the interpretation of magnetization and Mossbauer spectroscopic measurements. Monte Carlo simulation studies that corroborate experimental findings and advance elucidation of core vs. surface contributions to magnetic behavior are also presented. In addition, applications to nano and bio technology and future research directions in core/shell, matrix embedded and interacting magnetic nanoparticles are also addressed. (C) 2009 Published by Elsevier Ltd.
引用
收藏
页码：438 / 447
页数：10
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