Magnetization Reversal Mechanism for CoFeB Ferromagnetic Nanotube Arrays

被引：0
|
作者：
Liu Hai-Rui [1 ,2 ]
Shamaila, S. [2 ]
Chen Jun-Yang [2 ]
Sharif, R. [2 ]
Lu Qing-Feng [1 ]
Han Xiu-Feng [2 ]
机构：
[1] Henan Normal Univ, Coll Phys & Informat Engn, Xinxiang 453007, Peoples R China
[2] Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2009年 / 26卷 / 07期
基金：
中国国家自然科学基金;
关键词：
NANOWIRE ARRAYS; DELIVERY;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
CoFeB nanotube arrays are fabricated in anodic aluminum oxide (AAO) membranes and track etched polycarbonate (PCTE) membranes by using an electrochemical method, and their magnetic properties are investigated by vibrating sample magnetometry. The coercivity H-c and remanent squareness S-Q of these CoFeB nanotube arrays are derived from hysteresis loops as a function of angle between the field and tube axis. The H-c(theta) curves for CoFeB nanotube arrays in AAO and PCTE membranes show M-type variation, while they change shape from M to mountain-type as the tube length increases. However, the overall easy axis perpendicular to tube axis does not change with tube length. The different angular dependences are attributed to different magnetization reversal mechanisms.
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页数：4
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