| 氧化锌纳米微晶的顺磁共振特性 |
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| 引用本文： | 余保龙,张桂兰,汤国庆,吴晓春,陈文驹.氧化锌纳米微晶的顺磁共振特性[J].物理化学学报,1995,11(7):587-589. |
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| 作者姓名： | 余保龙 张桂兰 汤国庆 吴晓春 陈文驹 |
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| 作者单位： | Institute of Modern Optics,Nankai University,Tianjin 300071 |
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| 摘 要： | 半导体纳米微粒是制备新一代电子器件的理想材料［1，2］．电子自旋共振谱（ESR）是研究纳米微晶表面电子自旋构象和表面结构的一种有效方法．体相ZnO是一种抗磁性物质，通常观察不到顺磁共振信号（ESR）．有关ZnO纳米微晶电子顺磁共振特性研究还未见文献报导．本文ZnO纳米微晶是用微乳法制备的：这样就制成了纳米尺度的具有表面包覆的ZnO微粒有机溶胶．这里表面活性剂起着“空间位阻”作用，一方面防止成胶过程中粒子间的聚合，使胶粒均匀细小；另一方面，包覆能减少微粒表面缺陷，使粒子性质变得十分稳定．将上述制得的ZnO纳米微粒…
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| 关 键 词： | 电子顺磁共振 ZnO纳米微晶 |
| 收稿时间： | 1995-03-27 |
| 修稿时间： | 1995-05-18 |
Electronic Spin Resonance Properties of ZnO Nanocrystallite |
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| Yu Baolong, Zhang Guilan, Tang Guoqing, Wu Xiaochun, Chen Wenju.Electronic Spin Resonance Properties of ZnO Nanocrystallite[J].Acta Physico-Chimica Sinica,1995,11(7):587-589. |
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| Authors: | Yu Baolong Zhang Guilan Tang Guoqing Wu Xiaochun Chen Wenju |
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| Institution: | Institute of Modern Optics,Nankai University,Tianjin 300071 |
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| 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. |
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| Keywords: | Electronic spin resonance ZnO nanocrystallite |
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