SmCo5/Fe nanocomposite magnetic powders processed by magnetic field-assisted ball milling with and without surfactant

被引：30

作者：

Saravanan, P. ^{[1
]}

Gopalan, R. ^{[1
]}

Rao, N. V. Rama ^{[1
]}

Raja, M. Manivel ^{[1
]}

Chandrasekaran, V. ^{[1
]}

机构：

[1] Def Met Res Lab, Hyderabad 500058, Andhra Pradesh, India

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2007年 / 40卷 / 17期

关键词：

D O I：

10.1088/0022-3727/40/17/002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A magnetic field-assisted ball milling has been employed for the preparation of SmCo5 + 10 wt% Fe nanocomposite powders in the presence of oleic acid as surfactant. Milling experiments were also carried out without using surfactant and the nanocomposite powders so obtained, with and without surfactant, were investigated for their structural and magnetic properties using SEM, XRD, VSM and Mossbauer spectrometry. The field-milled SmCo5/Fe nanopowders in the presence of surfactant display a possible grain orientation and possess relatively high coercivity as compared with that of SmCo5/Fe powders obtained with field-milling or conventional milling. Mossbauer studies revealed that the formation of alpha-Fe(Co) ( soft magnetic phase) is more pronounced for the powders milled without surfactant.

引用

页码：5021 / 5026

页数：6

共 18 条

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