| 金属微粒-介质复合薄膜(Ag-BaO)的正电子湮没寿命实验 |
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| 引用本文： | 李丽君,吴锦雷.金属微粒-介质复合薄膜(Ag-BaO)的正电子湮没寿命实验[J].北京大学学报(自然科学版),1999,35(3):391-394. |
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| 作者姓名： | 李丽君 吴锦雷 |
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| 作者单位： | 北京大学电子学系，北京，100871 |
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| 基金项目： | 国家自然科学基金;69681001; |
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| 摘 要： | 以真空蒸发方式制备的金属微粒-介质复合薄膜，会存在各种不同的微观结构缺陷。为研究它的这种缺陷，制备了Ag微粒-介质(BaO)复合薄膜，并在不同温度下退火，对这些样品做了正电子湮没寿命实验，结果发现随退火温度升高正电子湮没平均寿命减少，这是因为表征金属微粒与介质之间界面状况的缺陷经退火而得到改善。
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| 关 键 词： | 金属微粒 正电子湮没 薄膜 |
| 收稿时间： | 1997-12-16 |
| 修稿时间： | 1997年12月16日 |
Positron Annihilation Study of Metal Particles-Matrix Thin Film (Ag-BaO) |
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| LI Lijun,WU Jinlei.Positron Annihilation Study of Metal Particles-Matrix Thin Film (Ag-BaO)[J].Acta Scientiarum Naturalium Universitatis Pekinensis,1999,35(3):391-394. |
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| Authors: | LI Lijun WU Jinlei |
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| Institution: | Department of Electronics, Peking University, Beijing, 100871 |
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| Abstract: | There are different kinds
of microstructure defects in metal particles matrix complex thin films.In order to study these
defects we produced complex thin film of Ag particles embedded in BaO matrix.The samples were
annealed at different temperature.The mean positron annihilation lifetime of the samples
decreased as the annealing temperature raised.It indicates that the structure condition of the
interface between Ag particles and the matrix had been improved by annealing. |
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| Keywords: | metal particles positron annihilation thin film |
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