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研究论文

硼酸系电结晶制[Co/Pt]_n(n≥40)金属多层膜的研究

  • 印仁和
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  • 上海大学化学系

收稿日期: 1998-08-28

  修回日期: 1998-08-28

  网络出版日期: 1998-08-28

Study of Electrocrystallized n(n≥40) multilayers in Boric Acid Solution

  • Yin Renhe  Shi Wenguang Cao Weimin
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  • (Dept.of Chemistry,Shanghai University,Shanghai 201800

Received date: 1998-08-28

  Revised date: 1998-08-28

  Online published: 1998-08-28

摘要

于钝铜片及玻碳上采用双电解池恒电位结晶制取了[Co(0.5nm~2.2nm)/Pt(2.0nm)]n(n≥40)金属多层膜.低角度X射线衍射表明多层膜有良好的周期性调制结构,其Bragg峰的半幅值随着钴层电结晶电位的负移和铂层电结晶电位正移而减小.中角度X射线衍射表明界面上存在CoPt3金属化合物.多层膜的磁滞回线表明该多层膜的易磁化轴平行于膜面,表现出平面磁各向异性.以低过电位镀Co(厚度约0.5nm)的多层膜的垂直方向磁滞回线形状较好,有望表现出垂直磁各向异性.

本文引用格式

印仁和 . 硼酸系电结晶制[Co/Pt]_n(n≥40)金属多层膜的研究[J]. 电化学, 1998 , 4(3) : 280 -285 . DOI: 10.61558/2993-074X.2700

Abstract

Co(0.5 nm~2.2 nm)/Pt(2.0 nm)] n(n>40) multilayers were prepared by electrocrystallization on copper and glass carbon with a dual cell technique under potential control.The periodical modulated structure of the multilayers was demonstrated by the low angle X ray diffraction. Potential shift negative to the deposition potential of the Co layer and positive to the deposition potential of the Pt layer decreased the value of the full width at half maximum(FWHM) of first Bragg Peak.CoPt 3 alloy was found as the interface of the multilayers by the middle angle X ray diffraction.The hysteresis loops show that the easy magnetization of these multilayers lay in plane,and the multilayers tend to exhibit planar anisotropy.The shapes of the hysteresis loops in perpendicular direction perform well when the Co layers were deposited at a low overpotential, with thickness about 0.5nm.The multilayers probably show perpendicular uniaxial anisotropy.

参考文献

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