物理化学学报 >> 1995, Vol. 11 >> Issue (07): 587-589.doi: 10.3866/PKU.WHXB19950704

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氧化锌纳米微晶的顺磁共振特性

余保龙,张桂兰,汤国庆,吴晓春,陈文驹   

  1. 南开大学现代光学研究所|天津 300071
  • 收稿日期:1995-03-27 修回日期:1995-05-18 发布日期:1995-07-15
  • 通讯作者:

Electronic Spin Resonance Properties of ZnO Nanocrystallite

Yu Bao-Long,Zhang Gui-Lan,Tang Guo-Qing,Wu Xiao-Chun,Chen Wen-Ju   

  1. Institute of Modern Optics,Nankai University,Tianjin 300071
  • Received:1995-03-27 Revised:1995-05-18 Published:1995-07-15
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关键词: 电子顺磁共振, ZnO纳米微晶

Abstract:

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.

Key words: Electronic spin resonance, ZnO nanocrystallite