| 低能离子在C60薄膜中引起的辐照效应 |
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| 引用本文： | 金运范,杨茹,刘昌龙,姚江宏.低能离子在C60薄膜中引起的辐照效应[J].中国物理 C,2000,24(1):82-86. |
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| 作者姓名： | 金运范 杨茹 刘昌龙 姚江宏 |
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| 作者单位： | [1]中国科学院控物理研究所 [2]兰州大学物理系 |
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| 基金项目： | 国家自然科学基金!19675054，中国科学院九五重点项目!KJ952－S1－423，甘肃省自然科学基金!ZR－95 |
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| 摘 要： | 用Raman(拉曼)散射技术分析了120keV的H,Ar和Fe离子在C60薄膜中引起的辐照效应,主要指由晶态向非晶态的转变.分析结果表明,在Fe和Ar离子辐照的C60薄膜中,核碰撞主导了由晶态向非晶态的转变过程.而在H离子辐照的情况下,电子能损起主导作用,并发现在H离子辐照过程中,电子能损有明显的退火效应,致使由晶态向非晶态转变的过程中,经历了一个石墨化的中间过程.
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| 关 键 词： | 辐照效应 C薄膜 低能离子 退火效应 |
| 收稿时间： | 1998-11-9 |
Irradiation Effect in C60 Films Induced By Low Energy Ions |
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| JIN YunFan,YANG Ru,LIU ChangLong.Irradiation Effect in C60 Films Induced By Low Energy Ions[J].High Energy Physics and Nuclear Physics,2000,24(1):82-86. |
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| Authors: | JIN YunFan YANG Ru LIU ChangLong |
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| Abstract: | Irradiation effecs, mainly including transformation from crystalline into amorphous state, of C, films induced by 120keV H, Ar and Fe ions irradiation were analysed by means of Raman scattering technique. The results indicate that amorphization process in the cases of Ar and Fe ions irradiation is dominated by nuclear collision, but in the case of H ion irradiation, the process is dominated by electronic energy transfer. The annealing effect of electronic energy loss which induced the intermediate graphitization process before amorphization in lower irradiation dose ranging from 2 X 10_14 ions/cm~2 to 5 X 10_16 ions /cm~2 was found in the case of H ion irradiation for the first bine. |
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| Keywords: | irradiation effect C_60 film low energy ions annealing effect |
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