Effect of crystallization quality on ferromagnetism in Zn1 − xCoxO nanopowders
Effect of crystallization quality on ferromagnetism in Zn1 − xCoxO nanopowders
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DOI：
10.1016/j.matlet.2007.05.042
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发表时间：
2008-02
影响因子：
3
通讯作者：
Jing Ma;W. Hao;R. Luo;Huai-zhe Xu
中科院分区：
文献类型：
--
作者：
Jing Ma;W. Hao;R. Luo;Huai-zhe Xu
本文采用一种简单的化学方法制备了一系列不同钴含量的−_xCo_xO纳米晶，并对其在自旋电子学中的应用进行了深入的探索。用X射线衍射仪、紫外可见光谱仪、透射电子显微镜和振动样品磁强计对样品的结构和磁性能进行了表征。结果表明，Co2+能很好地嵌入到ZnO纤锌矿结构中。在室温下观察到了−_xCo_xO纳米粉末的铁磁性。详细讨论了−_xCo_xO纳米粉末的晶化质量与磁性的关系。结果表明，−-CoxO纳米晶的晶化质量对其铁磁性有很大影响。
In this paper, a series of Zn1−xCoxO nanocrystals with different cobalt percentages were fabricated by a simple chemical method, which were intensively explored for spintronics applications. X-ray diffraction (XRD), ultraviolet–visible (UV–Vis) spectrophotometer, transmission electron microscope (TEM) and vibrating sample magnetometer (VSM) were used to characterize the structures and magnetic properties of prepared samples. It was concluded that Co2+was well inserted into ZnO wurtzite structure. The ferromagnetism of Zn1−xCoxO nanopowders was observed at room temperature. The relation between crystallization quality and magnetism of Zn1−xCoxO nanopowders was discussed in detail. It was demonstrated the crystallization quality of Zn1−xCoxO nanocrystals had a strong effect on the ferromagnetism.