Temperature dependence of magnetization reversal in Co and Fe3O4 nanowire arrays

被引：17
|
作者：
Kazakova, O
Erts, D
Crowley, TA
Kulkarni, JS
Holmes, JD
机构：
[1] Natl Phys Lab, Teddington TW11 0LW, Middx, England
[2] Latvian State Univ, LV-1063 Riga, Latvia
[3] Natl Univ Ireland Univ Coll Cork, Dept Chem, Mat Sect, Cork, Ireland
[4] Natl Univ Ireland Univ Coll Cork, Dept Chem, Supercrit Fluid Ctr, Cork, Ireland
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 286卷
关键词：
nanowires; magnetization reversal; FCC cobalt; magnetite;
D O I：
10.1016/j.jmmm.2004.09.128
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, we investigate the magnetization reversal of cobalt and magnetite nanowires, 4nm in diameter, synthesized within the pores of mesoporous silica thin films. A SQUID magnetometer was used to study the magnetic properties of the nanowire arrays over a broad temperature interval, T= 1.8-300K. The magnetization reversal process was found to be strongly temperature dependent. While a coherent rotation may occur at room temperature, a process involving the formation of domain structures takes place as the temperature decreases down to 1.8K. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：171 / 176
页数：6
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