Microstructural characterisation of electrodeposited Co/Pt multilayers

被引:11
作者
Georgescu, V
Mazur, V
Pushcashu, B
机构
[1] Al I Cuza Univ, Fac Phys, Iasi 6600, Romania
[2] Inst Acad Sci, Kishinev 277028, Moldova
来源
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2000年 / 68卷 / 03期
关键词
Co/Pt multilayers; electrolysis; coercive field;
D O I
10.1016/S0921-5107(99)00599-1
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have prepared Co/Pt multilayers by electrolysis using a potentiostatic technique. The solution is based on CoSO4.7H(2)O and K2PtCl6 salts. Our films with periods of(0.8-15) nm have been characterised using X-ray diffraction, electron diffraction analysis of X-rays, scanning electron microscopy and torque magnetometry. Perpendicular magnetic anisotropy was observed for multilayers with Co layers thinner than about 1.0 nm, and a Pt layer thickness of 1.0 nm. A simultaneous multinuclear growth of grains of ordered phases (L1(0)) CoPt or (L1(2)) CoPt3, depending on the electrolysis parameters formed films with very short periodicity. In films with bilayer period thicker than 2.5 nm, polycrystalline h.c.p. Co layers are successive stacked with amorphous Pt layers. Effective magnetic anisotropy per unit volume and coercive field were found to depend on Co layer thickness (t(Co)) for a series of Co/Pt multilayers with t(Pt) = 1 nm and t(Co) varying in the range (0.3-4) nm. (C) 2000 Published by Elsevier Science S.A. All rights reserved.
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页码:131 / 137
页数:7
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