Room-temperature ferromagnetism in pure CeO2 nanoparticles prepared by a simple direct thermal decomposition

被引：0
|
作者：
Sumalin Phokha
Ekaphan Swatsitang
Santi Maensiri
机构：
[1] Khon Kaen University,Department of Physics, Faculty of Science
[2] Suranaree University of Technology,School of Physics, Institute of Science
来源：
Electronic Materials Letters | 2015年 / 11卷
关键词：
CeO; ferromagnetism; nanoparticles; thermal decomposition;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
This study reports the structural and magnetic properties of CeO2 nanoparticles synthesized using a simple thermal decomposition method. The samples show room-temperature ferromagnetism (RT-FM) when thermally decomposed at above 500°C. Ferromagnetic ordering occurs due to the presence of Ce3+ as confirmed by transmission electron microscopy (TEM) and x-ray absorption near edge spectroscopy (XANES). High resolution TEM results also reveal the Ce2O3 (Ce3+) phase can be attributed to the formation of defects/oxygen vacancies at its surface. The F-center exchange interaction has been proposed as playing an important role in the magnetic behavior of the prepared CeO2 nanoparticles.
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页码：1012 / 1020
页数：8
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