Characterization and magnetic properties of Fe-Co ultrafine particles

被引：43
作者：
Dong, XL
Zhang, ZD
Jin, SR
Kim, BK
机构：
[1] Korea Inst Machinery & Mat, Powder Met Grp, Changwon 641010, Kyungnam, South Korea
[2] Acad Sinica, Inst Met Res, Int Ctr Mat Phys, Shenyang 110015, Peoples R China
[3] Shenyang Polytech Univ, Lab Ultrafine Particles, Shenyang 110023, Peoples R China
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2000年 / 210卷 / 1-3期
基金：
中国国家自然科学基金;
关键词：
ultrafine particles; arc-discharge synthesis; magnetic properties;
D O I：
10.1016/S0304-8853(99)00616-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Characterization and magnetic properties of Fe-Co ultrafine particles were investigated systematically by means of X-ray diffraction, Mossbauer spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, energy disperse spectroscopy analysis, chemical analysis, oxygen determination and magnetization measurement. In comparison with bulk iron-cobalt alloys, the corresponding Fe-Co ultrafine particles have significant difference in the phase structure and magnetic properties, depending on the condition of evaporating and subsequent quenching. The mechanism for the formation of the ultrafine particles as well as the origin of ferromagnetism and paramagnetism (or superparamagnetism) were discussed. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：143 / 149
页数：7
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