Abstract
In this study, B-doped ZnO nanoparticles were synthesized by template-free solvothermal method. X-ray diffraction analysis reveals that B-doped ZnO nanoparticles have hexagonal wurtzite structure. Field emission scanning electron microscopy observations show that the nanoparticles have a diameter of 50 nm. The room temperature ferromagnetism increases monotonically with increasing B concentration to the ZnO nanoparticles and reaches the maximum value of saturation magnetization 0.0178 A·m2·kg−1 for 5 % B-doped ZnO nanoparticles. Moreover, photoluminescence spectra reveal that B doping causes to produce Zn vacancies (VZn). Magnetic moment of oxygen atoms nearest to the B-VZn vacancy pairs can be considered as a source of ferromagnetism for B-doped ZnO nanoparticles.
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Acknowledgments
This study was financially supported by the National Natural Science Foundation of China (Nos. 50831002, 51271020, 51071022, and 11174031), the Program for Changjiang Scholars and Innovative Research Team in University (No. IRT1106), Beijing Nova Program (No. 2011031), the Beijing Municipal Natural Science Foundation (No. 2102032), and the Fundamental Research Funds for the Central Universities.
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Farooq, M.H., Xu, XG., Yang, HL. et al. Room temperature ferromagnetism of boron-doped ZnO nanoparticles prepared by solvothermal method. Rare Met. 32, 264–268 (2013). https://doi.org/10.1007/s12598-013-0058-5
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DOI: https://doi.org/10.1007/s12598-013-0058-5