Microstructure and magnetic properties of bamboo-like CoPt/Pt multilayered nanowire arrays

被引：64
作者：
Su, YK
Qin, DH
Zhang, HL
Li, H [1 ]
Li, HL [1 ]
机构：
[1] Lanzhou Univ, Coll Chem & Chem Engn, Dept Chem, Lanzhou 730000, Peoples R China
[2] Univ Oxford, Dept Mat, Oxford OX1 3PH, England
来源：
CHEMICAL PHYSICS LETTERS | 2004年 / 388卷 / 4-6期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1016/j.cplett.2004.03.041
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Highly ordered CoPt/Pt multilayered nanowire arrays have been fabricated successfully by double-pulse electro-deposition into the pores of a porous anodic aluminum oxide (AAO) template. It was found that the nanowires had a bamboo-like structure, in which the section lengths were readily adjusted by varying the pulse width and pulse intensity. XRD and EDX pattern indicated that Pt and disordered fee CoPt structure were formed during electro-deposition. An in plane anisotropy was found in the samples and high coercivity (He = 1.8 kOe), squareness (Mr/Ms) around 0.35 was obtained in the samples when the field applied perpendicular to wire axis of CoPt/Pt multilayers, the value of which was much higher than that of pure Co nanowires with the same dimension. The high coercivity obtained in the samples can be attributed to the forming disordered fee CoPt structure during the deposition of Co. (C) 2004 Elsevier B.V. All rights reserved.
引用
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页码：406 / 410
页数：5
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