| Mn掺杂ZnO纳米晶粉体的结构及磁性研究 |
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| 引用本文： | 周廷栋,薛建,晏沪盈,刘文斌. Mn掺杂ZnO纳米晶粉体的结构及磁性研究[J]. 西华大学学报(自然科学版), 2020, 39(3): 48-53. DOI: 10.12198/j.issn.1673-159X.3624 |
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| 作者姓名： | 周廷栋 薛建 晏沪盈 刘文斌 |
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| 作者单位： | 西华大学材料科学与工程学院,四川成都610039;西华大学材料科学与工程学院,四川成都610039;西华大学材料科学与工程学院,四川成都610039;西华大学材料科学与工程学院,四川成都610039 |
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| 基金项目： | 四川省科技厅重点研发项目（2018FZ0085） |
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| 摘 要： | 为探寻ZnO稀磁半导体材料的室温铁磁性来源，采用溶胶凝胶法制备掺Mn量为0、1%、2%和3%的ZnO粉体，利用X射线衍射仪、扫描电子显微镜、X射线光电子能谱仪以及振动样品磁强计，研究粉体的形貌特征、物相、电子结构以及室温磁性能。结果表明:掺Mn可使粉体粒度减小；Mn以离子形式取代Zn的位置，保持了本征ZnO的六方纤锌矿结构，无第二相形成；掺Mn形成的Zn—Mn键和Mn—O—Mn键改变了本征ZnO的缺陷结构，从而导致磁性变化；样品中的氧空位浓度决定ZnO的室温铁磁性；掺Mn量为1%时为最优掺入量，具有最大的饱和磁矩22.599×10?2 emu/g。
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| 关 键 词： | 稀磁半导体 ZnO 电子结构 磁矩 溶胶凝胶 |
| 收稿时间： | 2020-02-26 |
Structural and Magnetic Properties of Mn-doped ZnO Nanocrystalline Powders |
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| ZHOU Tingdong,XUE Jian,YAN Huying,LIU Wenbin. Structural and Magnetic Properties of Mn-doped ZnO Nanocrystalline Powders[J]. Journal of Xihua University(Natural Science Edition), 2020, 39(3): 48-53. DOI: 10.12198/j.issn.1673-159X.3624 |
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| Authors: | ZHOU Tingdong XUE Jian YAN Huying LIU Wenbin |
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| Affiliation: | School of Materials Science and Engineering, Xihua University, Chengdu 610039 China |
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| Abstract: | In order to explore the origin of room-temperature magnetic properties in ZnO diluted magnetic semiconductor materials, ZnO powders with Mn content of 0, 1%, 2% and 3% were prepared by sol-gel method respectively. The morphology, phase, electronic structure, and magnetic properties of samples were studied by using X-ray diffractometer (XRD), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and vibrating sample magnetometer (VSM). The results show that the particle sizes are decreased through doping Mn into ZnO. Mn replaces Zn in the form of ion, and its phase structure keeps the hexagonal wurtzite of ZnO. There are no secondary phases in doping samples. The Zn-Mn bond and Mn-O-Mn bond are formed in Mn-doped ZnO, and they change the defect structure of intrinsic ZnO, so magnetic properties of samples are changed. The room-temperature magnetic property of ZnO is determined by the concentration of oxygen vacancy. The optimum content of Mn is 1%, and its maximum saturation magnetic moment is 22.599×10?2 emu/g. |
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