Magnetic domain wall pinning and coercivity in FePt/MgO and FePt/Pt thin films

被引：10
|
作者：
Jourdan, Thomas [2 ]
Attane, Jean-Philippe [1 ,3 ]
Lancon, Frederic [2 ]
Beigne, Cyrille [1 ]
Vila, Laurent [1 ]
Marty, Alain [1 ]
机构：
[1] CEA, INAC, SP2M, Lab Nanostruct & Magnetisme, F-38054 Grenoble, France
[2] CEA, INAC, SP2M, Lab Simulat Atomist, F-38054 Grenoble, France
[3] Univ Grenoble 1, F-38041 Grenoble, France
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2009年 / 321卷 / 14期
关键词：
Coercivity; FePt; Hysteresis; Domain wall; Pinning;
D O I：
10.1016/j.jmmm.2009.01.030
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
FePt thin layers have been epitaxied either on Pt(001) or on MgO(001) substrates, and magnetically characterized using extraordinary Hall effect magnetometry and magnetic force microscopy. The coercivity originates in both cases from the pinning of domain walls on structural defects. Whereas the coercivity increases with the FePt layer thickness in FePt/Pt samples, it decreases in FePt/MgO samples. This discrepancy is explained on the basis of structural observations, and of atomistic simulations of magnetic domain wall pinning. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：2187 / 2191
页数：5
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