Magnetization reversal of ferromagnetic nanoparticles under inhomogeneous magnetic field

被引：16
|
作者：
Chang, Joonyeon [1 ]
Yi, Hyunjung
Koo, Hyun Cheol
Mironov, V. L.
Gribkov, B. A.
Fraerman, A. A.
Gusev, S. A.
Vdovichev, S. N.
机构：
[1] Korea Inst Sci & Technol, Nano Device Res Ctr, Seoul 136791, South Korea
[2] RAS, Inst Phys Microstruct, Nizhnii Novgorod 603950, Russia
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 309卷 / 02期
基金：
俄罗斯基础研究基金会;
关键词：
magnetization reversal; magnetic force microscopy; single magnetic domain; vortex;
D O I：
10.1016/j.jmmm.2006.07.015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigated remagnetization processes in ferromagnetic natioparticles under inhomogeneous magnetic field induced by the tip of magnetic force microscope (MFM) in both theoretical and empirical ways. Systematic MFM observations were carried out on arrays of submicron-sized elliptical ferromagnetic particles of Co and FeCr with different sizes and periods. It clearly reveals the distribution of remanent magnetization and processes of local remagnetization. of individual ferromagnetic particles. Modeling of remagnetization processes in ferromagnetic nanoparticles under magnetic field induced by MFM probe was performed on the base of Landau-Lifshitz-Gilbert equation for magnetization. MFM-induced inhomogeneous magnetic field is very effective to control the magnetic state of individual ferromagnetic nanoparticles as well as to create different distribution of magnetic field in array of ferromagnetic nanoparticles. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：272 / 277
页数：6
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