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Citation: Yu Bao-Long, Zhang Gui-Lan, Tang Guo-Qing, Wu Xiao-Chun, Chen Wen-Ju. Electronic Spin Resonance Properties of ZnO Nanocrystallite[J]. Acta Physico-Chimica Sinica, ;1995, 11(07): 587-589. doi: 10.3866/PKU.WHXB19950704 shu

Electronic Spin Resonance Properties of ZnO Nanocrystallite

1.
Institute of Modern Optics,Nankai University,Tianjin 300071

Received Date: 27 March 1995
Available Online: 15 July 1995

The microemulsion method for preparing ZnO nanocrystallites was reported. Through measuring ZnO microcrystllite ESR spectra, we found that at room temperature it has a significant ESR signal and its intensity descends with the increase of annealed temperature. This result is in contrast with that of bulk ZnO which is a diamagnetic material and no ESR signal. Finally it was found and verified that on the surfaces of ZnO nanocrystallites there are a lot of oxygen vacancies and defects which trap electrons and form paramagnetic centers to provide the observed ESR signal.
- Electronic spin resonance,
- ZnO nanocrystallite
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沈阳化工大学材料科学与工程学院沈阳 110142

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