Angular dependence of the coercivity in arrays of ferromagnetic nanowires

被引：19

作者：

Holanda, J. ^{[1
]}

Silva, D. B. O. ^{[2
]}

Padron-Hernandez, E. ^{[1
,2
]}

机构：

[1] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil

[2] Univ Fed Pernambuco, BR-50670901 Recife, PE, Brazil

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2015年 / 378卷

关键词：

MAGNETIZATION REVERSAL; ELECTRODEPOSITION;

D O I：

10.1016/j.jmmm.2014.11.046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a new magnetic model for polycrystalline nanowires arrays in porous anodic aluminum oxide. The principal consideration here is the crystalline structure and the morphology of the wires and them the dipolar interactions between the crystals into the wire. Other aspect here is the direct calculation of the dipolar energy for the interaction of one wire with the others in the array. The free energy density was formulated for polycrystalline nanowires arrays in order to determinate the anisotropy effective held. It was using the microstructure study by scanning and transmission electron microscopy for the estimation of the real structure of the wires. After the structural analysis we used the angular dependences for the coercivity held and for the remnant magnetization to determine the properties of the wires. All analysis were made by the theory treatment proposed by Stoner and Wohlfarth. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：228 / 231

页数：4

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