X-ray analysis of oxygen-induced perpendicular magnetic anisotropy in Pt/Co/AlOx trilayers

被引：388

作者：

Manchon, A. ^{[1
]}

Pizzini, S. ^{[2
]}

Vogel, J. ^{[2
]}

Uhlir, V. ^{[2
]}

Lombard, L. ^{[1
]}

Ducruet, C. ^{[1
]}

Auffret, S. ^{[1
]}

Rodmacq, B. ^{[1
]}

Dieny, B. ^{[1
]}

Hochstrasser, M. ^{[3
]}

Panaccione, G. ^{[4
]}

机构：

[1] CEA, CNRS, SPINTEC, URA 2512, F-38054 Grenoble 9, France

[2] UJF, CNRS, Inst Neel, F-38042 Grenoble 9, France

[3] ETH, Solid State Phys Lab, CH-8093 Zurich, Switzerland

[4] CNR, INFM, Lab TASC, I-34012 Trieste, Italy

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2008年 / 320卷 / 13期

关键词：

X-ray photoelectron spectroscopy (XPS); X-ray magnetic circular dichroism ( XMCD); X-ray absorption spectroscopy (XAS); magnetic tunnel junctions; perpendicular magnetic anisotropy;

D O I：

10.1016/j.jmmm.2008.02.131

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

X-ray spectroscopy measurements have been performed on a series of Pt/Co/AlO(x) trilayers to investigate the role of Co oxidation in the perpendicular magnetic anisotropy of the Co/AlO(x) interface. It is observed that high temperature annealing modifies the magnetic properties of the Co layer, inducing an enhancement of the perpendicular magnetic anisotropy. The microscopic structural properties are analyzed via X-ray Absorption Spectroscopy, X-ray Magnetic Circular Dichroism and X-ray Photoelectron Spectroscopy measurements. It is shown that annealing enhances the amount of interfacial oxide, which may be at the origin of a strong perpendicular magnetic anisotropy. (C) 2008 Elsevier B. V. All rights reserved.

引用

页码：1889 / 1892

页数：4

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