Mechanochemical Activation of Magnetite Nanoparticles

被引：0
|
作者：
Monica Sorescu
机构：
[1] Duquesne University,Department Of Physics, Bayer School Of Natural And Environmental Sciences
来源：
Journal of Nanoparticle Research | 2000年 / 2卷
关键词：
magnetite; mechanochemical activation; nanoparticles; Mössbauer spectroscopy; particle size effects;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Using Mössbauer spectroscopy as a function of ball milling time, it was found that nanomagnetite behaves differently than magnetite during mechanochemical activation. The phase sequence is determined by the original particle size of the powder. Magnetite suffers a phase transformation to hematite, while nanomagnetite (d = 19 nm) gives rise to superparamagnetism as effect of prolonged milling.
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页码：305 / 308
页数：3
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