Tuning of current-induced domain wall resonance frequency using Gd doping

被引：11

作者：

Lepadatu, S. ^{[1
]}

Claydon, J. S. ^{[1
]}

Ciudad, D. ^{[1
]}

Kinane, C. J. ^{[2
]}

Langridge, S. ^{[2
]}

Dhesi, S. S. ^{[3
]}

Marrows, C. H. ^{[1
]}

机构：

[1] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England

[2] Rutherford Appleton Lab, ISIS, Didcot OX11 0QX, Oxon, England

[3] Diamond Light Source, Didcot OX11 0DE, Oxon, England

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 07期

基金：

英国工程与自然科学研究理事会;

关键词：

current density; doping profiles; gadolinium; iron alloys; magnetic anisotropy; magnetic domain walls; nickel alloys; MOTION; FILMS;

D O I：

10.1063/1.3481074

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The current-induced resonance frequencies of domain walls in parabolic pinning potentials are measured in Gd doped NiFe as a function of doping level. The modification of magnetic properties due to Gd doping results in an order of magnitude increase in resonance frequencies for 10% Gd doping, due to the induced out-of-plane anisotropy, and the resonance frequencies are excited at lower current densities compared to undoped NiFe. These results are reproduced using a one-dimensional model of domain wall resonance, and found to be in good agreement in the small oscillation amplitude limit. (C) 2010 American Institute of Physics. [doi:10.1063/1.3481074]

引用

页数：3

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