Structural and magnetic properties of Mn-doped ZnO nanorod arrays grown via a simple hydrothermal reaction |
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| Authors: | Mingxia Yuan Wuyou Fu Haibin Yang Qingjiang Yu Shikai Liu Qiang Zhao Yongming Sui Dong Ma Peng Sun Yanyan Zhang Baomin Luo |
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| Affiliation: | 1. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;2. Changchun Institute of Applied Chemistry Chinese Academy of Sciences, Changchun 130012, China;3. Institute of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China;1. State Key Laboratory of Advanced Processing and Recycling Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China;2. School of Science, Lanzhou University of Technology, Lanzhou 730050, China;1. Department of Polymer Science and Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. School of Science, Tianjin University of Technology and Education, Tianjin 300222, China;3. Beijing Rui Tian Jun Yu Technology Co., LTD., Beijing 100029, China;4. Institute of Material Physics, Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China;5. CNRS-Universté de Lorraine, Laboratoire Réactions et Génie des Procédés, UPR3349, ENSIC, 1 rue Grandville, BP 20451, Nancy F-54000, France;1. Department of Physics, Gauhati University, Guwahati 781014, India;2. Department of Physics, Indian Institute of Technology Guwahati, Guwahati 781039, India;1. Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-Dong, Seodaemoon-Gu, Seoul 120-749, Republic of Korea;2. Energy and Environmental Division, Korea Institute of Ceramic Engineering & Technology, 233-5 Gasan-Dong, Guemcheon-Gu, Seoul 153-801, Republic of Korea |
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| Abstract: | High density Mn-doped ZnO nanorod arrays were vertically grown on ITO substrate via hydrothermal reaction at relatively low temperature of 95 °C. The microstructure and magnetism of the arrays have been examined. Field emission scanning electron microscopy shows that the nanorods of 100 nm diameter and 1 μm length grow along the 001] direction. X-ray photoemission spectroscopy demonstrates that Mn is successfully doped into the nanorods. Meanwhile, all the Mn-doped ZnO nanorod arrays are ferromagnetic at room temperature. It is also found that the value of the saturation magnetization (Ms) of the ZnO nanorod arrays firstly increases with increasing the Mn concentration and then decreases. The higher Ms value is 0.11emu/g, which is obtained in the 5 at.% Mn-doped ZnO nanorod arrays. The ferromagnetism comes from the ferromagnetic interaction between the Mn ions, which partly replace Zn ions. |
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