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

doi:10.1088/1674-1056/19/2/026101

中国物理B ›› 2010, Vol. 19 ›› Issue (2): 26101-026101.doi: 10.1088/1674-1056/19/2/026101

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

王东伟¹, 陈春英¹, 孙连峰¹, 郑凯泓², 刘政², 刘基², 胡丽君²

(1)National Center for Nanoscience and Technology, Beijing 100190, China; (2)National Center for Nanoscience and Technology, Beijing 100190, China;Graduate School of the Chinese Academy of Sciences, Beijing 100049, China

收稿日期:2009-04-23 修回日期:2009-06-02 出版日期:2010-02-15 发布日期:2010-02-15
基金资助:
Project supported by ``973'' Program of Ministry of Science and Technology of China (Grant No. 2006CB932402) and National Natural Science Foundation of China (Grant Nos. 50702015, 10574034 and 10774032).

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

Zheng Kai-Hong(郑凯泓)^a)b), Liu Zheng(刘政)^a)b), Liu Ji(刘基)^a)b), Hu Li-Jun (胡丽君)^a)b),Wang Dong-Wei(王东伟)^a), Chen Chun-Ying(陈春英)^a), and Sun Lian-Feng(孙连峰)^a)^†

^a National Center for Nanoscience and Technology, Beijing 100190, China; ^b Graduate School of the Chinese Academy of Sciences, Beijing 100049, China

Received:2009-04-23 Revised:2009-06-02 Online:2010-02-15 Published:2010-02-15
Supported by:
Project supported by ``973'' Program of Ministry of Science and Technology of China (Grant No. 2006CB932402) and National Natural Science Foundation of China (Grant Nos. 50702015, 10574034 and 10774032).

摘要/Abstract

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.

Abstract: 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.

Key words: nanorod, ferromagnetism, Mn-doped ZnO

中图分类号: (Methods of micro- and nanofabrication and processing)

81.16.-c

75.50.Pp (Magnetic semiconductors) 75.30.Cr (Saturation moments and magnetic susceptibilities) 68.37.Hk (Scanning electron microscopy (SEM) (including EBIC)) 78.30.Fs (III-V and II-VI semiconductors)

郑凯泓, 刘政, 刘基, 胡丽君, 王东伟, 陈春英, 孙连峰. Synthesis of high-T_C ferromagnetic Mn-doped ZnO nanorods by thermal evaporation[J]. 中国物理B, 2010, 19(2): 26101-026101.

Zheng Kai-Hong(郑凯泓), Liu Zheng(刘政), Liu Ji(刘基), Hu Li-Jun (胡丽君),Wang Dong-Wei(王东伟), Chen Chun-Ying(陈春英), and Sun Lian-Feng(孙连峰). Synthesis of high-T_C ferromagnetic Mn-doped ZnO nanorods by thermal evaporation[J]. Chin. Phys. B, 2010, 19(2): 26101-026101.

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

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

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