Compositional dependence of the magnetic properties of epitaxial FeV/MgO thin films

被引：33

作者：

Devolder, T. ^{[1
,2
]}

Tahmasebi, T. ^{[3
]}

Eimer, S. ^{[1
,2
]}

Hauet, T. ^{[4
]}

Andrieu, S. ^{[4
]}

机构：

[1] CNRS, Inst Elect Fondamentale, UMR 8622, F-91405 Orsay, France

[2] Univ Paris 11, F-91405 Orsay, France

[3] IMEC, B-3001 Louvain, Belgium

[4] Univ Lorraine, CNRS, Inst Jean Lamour, F-54506 Vandoeuvre Les Nancy, France

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 24期

关键词：

FERROMAGNETIC-RESONANCE LINEWIDTH; ALLOYS; METALS;

D O I：

10.1063/1.4845375

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Owing to their bcc structures and the low lattice misfit with MgO, FeV alloys are interesting for MgO-based magnetic tunnel junctions. We use vector network analyzer ferromagnetic resonance to measure the magnetization, anisotropy, exchange stiffness, and damping of epitaxial FeV/MgO thin alloys of various V contents. The low magnetization, very high exchange stiffness (23 pJ/m) and very low effective damping (<0.0026) of the alloy with 20% V content makes it an interesting candidate for spin torque applications. The ultralow damping is consistent with a spin-orbit origin, which sheds light on the possible strategies to reduce the damping in alloys. (C) 2013 AIP Publishing LLC.

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