Vertical bistable switching of spin vortex in a circular magnetic dot

被引：70

作者：

Kikuchi, N ^{[1
]}

Okamoto, S

Kitakami, O

Shimada, Y

Kim, SG

Otani, Y

Fukamichi, K

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, Grad Sch Engn, Dept Mat Sci, Sendai, Miyagi 9808579, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2001年 / 90卷 / 12期

关键词：

D O I：

10.1063/1.1416132

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated switching behaviors of a spin-vortex core in circular magnetic dots to evaluate them as a new candidate for magnetic memory elements. The spin-vortex core with the lateral dimension of exchange length can take two possible states with spins around the dot center directing either up- or downward. These two spin configurations are very stable and their polarities can be switched by a large vertical field. The mean switching field reaches about 2.5 kOe for Ni80Fe20 dots with 1 mum in diameter and 80 nm in height. This result could open the way for developing a new bistable magnetic memory element utilizing the spin vortex. (C) 2001 American Institute of Physics.

引用

页码：6548 / 6549

页数：2

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