Vortex formation in magnetic narrow rings:: The role of magneto-crystalline anisotropy

被引：35

作者：

Lopez-Diaz, L ^{[1
]}

Rothman, J ^{[1
]}

Kläui, M ^{[1
]}

Bland, JAC ^{[1
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

JOURNAL OF APPLIED PHYSICS | 2001年 / 89卷 / 11期

关键词：

D O I：

10.1063/1.1355352

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Hysteresis loops in mesoscopic narrow rings with cubic anisotropy have been computed. A two-step switching process is found. The first transition corresponds to vortex formation and has been studied in detail. Starting from a well defined remanent state with two opposite head-to-head walls, the vortex is created when, due to any asymmetry, one wall depins first, propagates, reaches the other and they annihilate one another. It is also found that, in this geometry, the crystallographic hard axis becomes the global easy axis due to the combined action of the magneto-crystalline anisotropy and the magnetostatic dipolar fields. (C) 2001 American Institute of Physics.

引用

页码：7579 / 7581

页数：3

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