Magnetic properties of postoxidized Pt/Co/Al layers with perpendicular anisotropy

被引：29
|
作者：
Lacour, D. [1 ]
Hehn, M. [1 ]
Alnot, M. [1 ]
Montaigne, F. [1 ]
Greullet, F. [1 ]
Lengaigne, G. [1 ]
Lenoble, O. [1 ]
Robert, S. [1 ]
Schuhl, A. [1 ]
机构：
[1] Univ Nancy 1, LPM, CNRS, F-54506 Vandoeuvre Les Nancy, France
来源：
APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 19期
关键词：
D O I：
10.1063/1.2734378
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The magnetic properties of ultrathin Co layers sandwiched between Pt and Al layers are studied as a function of the Al layer oxidation time. The association of three batches of complementary experiments (extraordinary Hall effect, x-ray photoelectron spectroscopy, and tunneling magnetoresistance) allows the authors to finely characterize their samples both magnetically and chemically. The authors show that their oxidation process reduces the coercive field of ultrathin Co layers with perpendicular anisotropy (case of short oxidation time) and can even induce transition from a ferromagnetic to a superparamagnetic state (lengthy oxidation time). (C) 2007 American Institute of Physics.
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页数：3
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