Magnetic properties of hydrogenated Li and Co doped ZnO nanoparticles
Magnetic properties of hydrogenated Li and Co doped ZnO nanoparticles
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DOI：
10.1063/1.2387877
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发表时间：
2006-10
影响因子：
4
通讯作者：
O. D. Jayakumar;I. K. Gopalakrishnan;K. Shasikala;S. K. Kulshreshtha
中科院分区：
文献类型：
--
作者：
O. D. Jayakumar;I. K. Gopalakrishnan;K. Shasikala;S. K. Kulshreshtha
提出了氢化对 Zn0.85Co0.05Li0.10O 纳米粒子磁性能的影响。结果发现，室温（RT）氢化的样品表现出弱铁磁性，而400°C氢化的样品在室温下表现出强铁磁性。在这两种情况下，在空气中将样品重新加热到 400°C 时，都会将其完全转变回顺磁状态。通过 X 射线和电子衍射对样品进行表征表明，在室温氢化的样品中观察到的室温铁磁性本质上是固有的，而在 400°C 氢化的样品中观察到的室温铁磁性部分归因于钴金属簇。
The effect of hydrogenation on the magnetic properties of Zn0.85Co0.05Li0.10O nanoparticles is presented. It was found that the sample hydrided at room temperature (RT) showed weak ferromagnetism, while that hydrided at 400°C showed robust ferromagnetism at room temperature. In both cases reheating the sample at 400°C in air converts it back into the paramagnetic state completely. The characterization of samples by x-ray and electron diffraction showed that room temperature ferromagnetism observed in the samples hydrogenated at RT is intrinsic in nature, whereas that observed in the samples hydrogenated at 400°C is partly due to the cobalt metal clusters.