Fine magnetic properties obtained in FeCo alloy nanowire arrays

被引:111
作者
Qin, DH [1 ]
Cao, L [1 ]
Sun, QY [1 ]
Huang, Y [1 ]
Li, HL [1 ]
机构
[1] Lanzhou Univ, Dept Chem, Lanzhou 730000, Peoples R China
基金
中国国家自然科学基金;
关键词
D O I
10.1016/S0009-2614(02)00649-8
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
Anodic aluminum oxide (AAO) was used as a template to prepare highly ordered FeCo alloy nanowire arrays. The as-deposited samples were annealed at 300. 400, 450, 500, 550 and 600 degreesC, respectively. The structure and magnetic properties of FeCo nanowire arrays dependence on different annealing temperature were analyzed by XRD and vibrating sample magnetometer. We found that the annealing samples had large coercivity (as high as 2800 Oe) and high squareness (M-r/M-s) (about 0.9). the value of which was much larger than that of as-deposited samples (coercivity about 1500 Oe, squareness about 0.7). The temperature dependence of coercivity field H-c and squareness of the FeCo nanowire arrays associated with the microstructure has been investigated and correlated with microstructure features. such as stress relaxation. structure ordering, second phase, and grain size. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:484 / 488
页数:5
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