Synthesis and Room Temperature Ferromagnetism of Flower-shaped Mn Doped ZnO Nanostructures

材料科学技术（英文）, 2011, 27(6): 513-517.

^1, , ^2, , ^3, , ^4, , ^5,

1.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

2.Department of Physics, National Key Laboratory of Mesoscopic Physics, Peking University, Beijing 100871, China

3.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

4.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

5.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

基金项目: the National Natural Science Foundation of China(50502005) and Metallurgy Foundation of University of Science and Technology Beijing One of the authors (Y.Q.Chang) is supported by Program for New Century Excellent Talents in University(NCET-07-0065) Open Project of Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education,Lanzhou University(LZUMMM2010002) Beijing Natural Science Foundation(1092014)

Synthesis and Room Temperature Ferromagnetism of Flower-shaped Mn Doped ZnO Nanostructures

Y.Q. Chang ^1, , P.W. Wang ^2, , R.H. Tang ^3, , Q.L. Sun ^4, , Y. Long ^5,

1.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

2.Department of Physics, National Key Laboratory of Mesoscopic Physics, Peking University, Beijing 100871, China

3.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

4.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

5.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

Keywords： Mn doped ZnO nanomaterials

Large-scale flower-shaped Mn doped ZnO nanostructures have been grown on silicon substrates by simple thermal evaporation at atmospheric pressure. The flower-shaped nanostructure makes up of many nanorods, which are rooted in one center. Analysis of X-ray diffraction, high-resolution transmission electron microscopy and Raman spectra results reveal that the products are of single phase with wurtzite structure. Elemental mapping results show that no impurity clusters exist in the doped materials. The photoluminescence spectra demonstrate that many oxygen vacancies exist in the doped materials, and the crystal quality is improved and the content of oxygen vacancies is decreased by annealing treatment. The flower-shaped Mn doped ZnO nanostructures exhibit ferromagnetic ordering above room temperature, and its magnetization is decreased by the annealing treatment, which indicates that the magnetic behavior of the doped materials may be related to the interaction between Mn doping and the oxygen vacancies.

参考文献

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Synthesis and Room Temperature Ferromagnetism of Flower-shaped Mn Doped ZnO Nanostructures

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