稀土元素作为微米级晶粒细化剂在有色和黑色金属工业中已经得到广泛应用,试验采用TEM,EDX,HEED和XRD方法研究了稀土钕对真空沉积的纳米级银粒子的细化作用.结果表明,稀土钕对银纳米粒子有细化作用,与稀土钕相关的成分为非晶态,细化作用使银的XRD衍射峰消失.分析认为,细化作用源于稀土钕增强了基底表面徙动激活能和基底原子吸附能,并由Lewis-Campbell理论估算得到稀土钕的引入使基底表面徙动激活能增加约0.071eV,相应的基底原子吸附能增加约0.142 eV～0.426 eV.
参考文献
| [1] | Liu C T .[J].Intermetallics,1996,4:429. |
| [2] | Karch J .[J].NATURE,1987,330:556. |
| [3] | 张旭.Microstructure and Photoelectric Properties of Ag Ultra-Fine-Particle-BaO Thin Films(银超微粒子-氧化钡薄膜的结构和光电特性)[J].Beijing Peking University,1988 |
| [4] | 许北雪,吴锦雷,刘惟敏,杨海,邵庆益,刘盛,薛增泉,吴全德.稀土对金属纳米粒子-介质复合薄膜（Ag-BaO）光电发射性能的增强[J].物理学报,2001(05):977-980. |
| [5] | Goldstein A N;Echer C M;Alivisatos A P .[J].科学(上海),1992,256:1425. |
| [6] | Kreibig U;Genzel L .[J].Surface Science,1985,156:678. |
| [7] | Halperin W P .[J].Reviews of Modern physics,1988,58(03):533. |
| [8] | 张志琨;崔作林.纳米技术与纳米材料[M].北京:电子工业出版社,2000:1. |
| [9] | Kasukabe S;Yatsuya S .[J].Japanese Journal of Applied Physics,1974,13(11):1714. |
| [10] | Tanaka K;Ishizaki K;Uda M et al.[J].Journal of Materials Science,1987,22:2192. |
| [11] | Tam A;Moe G G;Happer W .[J].Physical Review Letters,1975,35(24):1630. |
| [12] | Xie Y;Qian Y T .[J].Science,1996,272:1926. |
| [13] | Jones R W.Fundamental Principles of Sol-Gel Technology[M].London: Institute of Metals,1992:10. |
| [14] | Schaefer H E;Wurschum R;Birringer R et al.[J].Journal of Miner Met,1988,110:161. |
| [15] | GranqvistCG;Buhrman R A .[J].Journal of Applied Physiology,1976,47:2200. |
| [16] | Xia K .[J].Scripta Materialia,1999,41:67. |
| [17] | 庄应烘,袁世田.镧对含镍铟铝青铜组织和性能的影响[J].中国稀土学报,1987(03):59. |
| [18] | The Materials Information Society.Metals Handbook[M].NewYork:The Materials Information Society,1990:720. |
| [19] | 许北雪,吴锦雷,刘盛,郭等柱,邵庆益,刘惟敏,薛增泉,吴全德.稀土镧对真空蒸发沉积银纳米粒子团聚的影响[J].物理化学学报,2002(01):91-94. |
| [20] | Lewis B .[J].Journal of Vacuum Science and Technology,1967,4:209. |
| [21] | Lewis B .[J].THIN SOLID FILMS,1967,1:85. |
| [22] | Lewis B .[J].Surface Science Spectra,1970,21:273. |
| [23] | Lewis B .[J].Surface Science Spectra,1970,21:289. |
| [24] | Lewis B .[J].Philosophical Magazine,1974,29:1253. |
| [25] | 薛增泉;吴全德;李浩.薄膜物理[M].北京:电子工业出版社,1991:54. |
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