Synthesis of high-TC ferromagnetic Mn-doped ZnO nanorods by thermal evaporation  

作　　者：郑凯泓 刘政 刘基 胡丽君 王东伟 陈春英 孙连峰 

机构地区：[1]National Center for Nanoscience and Technology [2]Graduate School of the Chinese Academy of Sciences

出　　处：《Chinese Physics B》2010年第2期347-351,共5页中国物理B（英文版）

基　　金：supported by "973" Program of Ministry of Science and Technology of China (Grant No. 2006CB932402);National Natural Science Foundation of China (Grant Nos. 50702015, 10574034 and 10774032)

摘　　要：This paper reports that a large amount of Mn-doped ZnO nanorods have been synthesized through thermal evaporation. The morphologies and properties are studied with x-ray diffraction, a scanning electron microscope, transmission electron microscope and Raman spectroscope. The results indicate that the manganese atoms occupy the zinc vacancies in the wurtzite lattice of ZnO without forming secondary phases. The exact manganese content has been studied by the x-ray fluorescence spectrum. Meanwhile, the magnetic moment versus temperature result proves that the as-prepared Mn-doped ZnO nanorods show ferromagnetic properties at temperatures as high as 400~K. These studies provide a good understanding of the origin of magnetic properties in diluted magnetic semiconductors.This paper reports that a large amount of Mn-doped ZnO nanorods have been synthesized through thermal evaporation. The morphologies and properties are studied with x-ray diffraction, a scanning electron microscope, transmission electron microscope and Raman spectroscope. The results indicate that the manganese atoms occupy the zinc vacancies in the wurtzite lattice of ZnO without forming secondary phases. The exact manganese content has been studied by the x-ray fluorescence spectrum. Meanwhile, the magnetic moment versus temperature result proves that the as-prepared Mn-doped ZnO nanorods show ferromagnetic properties at temperatures as high as 400~K. These studies provide a good understanding of the origin of magnetic properties in diluted magnetic semiconductors.

关 键 词：nanorod FERROMAGNETISM Mn-doped ZnO 

分 类 号：O488[理学—固体物理]