Geometry dependence of the magnetization reversal process in bridged dots

被引：2
作者：
Escobar, R. A. [1 ]
Lage, E. [2 ]
d'Albuquerque e Castro, J. [3 ]
Altbir, D. [1 ]
Ross, C. A. [2 ]
机构：
[1] Univ Santiago Chile, Dept Fis, CEDENNA, USACH, Av Ecuador 3493, Santiago, Chile
[2] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA
[3] Univ Fed Rio de Janeiro, Inst Fis, Caixa Postal 68528, BR-21945970 Rio De Janeiro, RJ, Brazil
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2017年 / 432卷
关键词：
Magnetization reversal; Magnetic vortex; Bridged dots; SINGLE-DOMAIN; RECOGNITION; TRANSITION; ANISOTROPY; INJECTION; ARRAYS; WALLS;
D O I：
10.1016/j.jmmm.2017.01.087
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Based on Monte Carlo numerical simulations: results for the magnetization reversal process in thin circular Ni dots connected by a bridge are presented. The dependence of the process on both the width of the bridge and the orientation of the applied magnetic field has been investigated. It was found that when the applied magnetic field is set parallel to the bridge, the hysteresis curves are weakly dependent on the width of the bridge, being rather close to that of a single dot of the same diameter. On the other hand, when the magnetic field is applied perpendicularly to the bridge, a significant reduction in the coercivity of the system is obtained, even in the case of narrower bridges. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：304 / 308
页数：5
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