Effect of the classical ampere field in micromagnetic computations of spin polarized current-driven magnetization processes

被引：0

作者：

Carpentieri, M. ^{[1
]}

Finocchio, G. ^{[1
]}

Azzerboni, B. ^{[1
]}

Torres, L. ^{[2
]}

Lopez-Diaz, L. ^{[2
]}

Martinez, E. ^{[2
]}

机构：

[1] Dipartimento di Fisica Della Materia e Tecnologie Fisiche Avanzate, University of Messina, Salita Sperone 31, 98166 Messina, Italy

[2] Departamento de Fisica Aplicada, University of Salamanca, Plaza de La Merced s/n, Salamanca, Spain

来源：

Journal of Applied Physics | 2005年 / 97卷 / 10期

关键词：

Antiferromagnetism - Computer simulation - Current density - Magnetic anisotropy - Magnetic domains - Nanostructured materials - Random access storage;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Magnetization reversal by spin polarized current flowing perpendicular to pillar nanostructures with different geometries and materials is studied by means of a micromagnetic model. The spin transfer torque is included as an additional term in the Gilbert equation following previous theoretical calculations by Slonczewski. The ampere field (HAmp) due to the current and the dipolar antiferromagnetic coupling between the ferromagnetic layers are also taken into account. The HAmp plays a crucial role; in fact it can speed, retard or even inhibit the magnetization switching process depending on the kind of structure under test. The studied nanostructures are circular and elliptic nanopillars of CoCuCo and permalloyCupermalloy. © 2005 American Institute of Physics.

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