Magnetic moment orientations in α-Fe nanowire arrays embedded in anodic aluminum oxide templates

被引：11

作者：

Li, FS ^{[1
]}

Ren, LY ^{[1
]}

Niu, ZP ^{[1
]}

Wang, HX ^{[1
]}

Wang, T ^{[1
]}

机构：

[1] Lanzhou Univ, Key Lab Magnetism & Magnet Mat, Minist Educ, Lanzhou 730000, Peoples R China

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2002年 / 14卷 / 27期

关键词：

D O I：

10.1088/0953-8984/14/27/311

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Magnetic moment orientations of alpha-Fe nanowire arrays with two different diameters have been investigated by means of transmission Mossbauer spectroscopy (MS) and conversion electron Mossbauer spectroscopy (CEMS). From the intensity ratio in the sextets of MS and CEMS, it is found that inside the a-Fe nanowire array (60 nm in diameter) the magnetic moments are well parallel to the nanowires, but near the extremities of the nanowires the magnetic moment orientation deviates from parallelism to the long axis of the wire. When the diameter of the a-Fe nanowires increases (300 nm in diameter), CEM spectra indicate that the mean angle of orientation between the moment direction and the long axis of the wire becomes larger near the extremities of the nanowires. The calculated configurations of magnetic moment orientations are consistent with the MS and CEMS measurements.

引用

页码：6875 / 6882

页数：8

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