Tunable magnetization damping in transition metal ternary alloys

被引：32

作者：

Ingvarsson, S ^{[1
]}

Xiao, G

Parkin, SSP

Koch, RH

机构：

[1] Iceland Technol Inst, IS-112 Reykjavik, Iceland

[2] Brown Univ, Dept Phys, Providence, RI 02912 USA

[3] IBM Corp, Div Res, TJ Watson Res Ctr, Yorktown Hts, NY 10598 USA

[4] IBM Corp, Almaden Res Ctr, Div Res, San Jose, CA 95120 USA

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 21期

关键词：

D O I：

10.1063/1.1828232

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We show that magnetization damping in Permalloy, Ni80Fe20, can be enhanced sufficiently to reduce postswitching magnetization precession to an acceptable level by alloying with the transition metal Os (osmium). The damping increases monotonically upon raising the Os concentration in Permalloy, at least up to 9% of Os. Other effects of alloying with Os are suppression of magnetization and enhancement of in-plane anisotropy. Magnetization damping also increases significantly upon alloying with the five other transition metals included in this study (4d elements: Nb, Ru, Rh; 5d elements: Ta, Pt) but never as strongly as with Os. (C) 2004 American Institute of Physics.

引用

页码：4995 / 4997

页数：3

共 17 条

[1] Control of magnetization dynamics in Ni81Fe19 thin films through the use of rare-earth dopants [J].