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

被引：363
|
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
收藏
页码：1889 / 1892
页数：4
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