| Ar离子注入YBa2Cu3O7-x超导薄膜中微结构变化的透射电子显微镜研究 |
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| 引用本文： | 李贻杰,熊光成,甘子钊,任琮欣,邹世昌.Ar离子注入YBa2Cu3O7-x超导薄膜中微结构变化的透射电子显微镜研究[J].物理学报,1993,42(3):482-487. |
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| 作者姓名： | 李贻杰 熊光成 甘子钊 任琮欣 邹世昌 |
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| 作者单位： | (1)北京大学物理系,北京100871; (2)中国科学院上海冶金研究所离子束开放研究实验室,上海200050 |
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| 摘 要： | Ar离子注入YBa2Cu3O7-x超导薄膜后,不仅会引起样品超导转变温度Tc和临界电流密度Jc的下降,还会使样品的正常态由金属型变为半导体型。透射电子显微镜观察发现在小剂量(<5×1012Ar/cm2)注入情况下,样品的晶格结构几乎不受影响。随着注入剂量的增加,晶格损伤越来越严重,最终变成非晶态。对实验结果的分析表明,Ar离子注入引起YBa2<
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| 收稿时间： | 4/6/1992 12:00:00 AM |
TEM STUDY OF MICROSTRUCTURAL CHANGES INDUCED BY AR ION IMPLANTATION IN YBa2Cu3O7-x SUPERCONDUCTING FILMS |
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| LI YI-JIE,XIONG GUANG-CHENG,GAN ZI-ZHAO,REN CONG-XIN and ZOU SHI-CHANG.TEM STUDY OF MICROSTRUCTURAL CHANGES INDUCED BY AR ION IMPLANTATION IN YBa2Cu3O7-x SUPERCONDUCTING FILMS[J].Acta Physica Sinica,1993,42(3):482-487. |
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| Authors: | LI YI-JIE XIONG GUANG-CHENG GAN ZI-ZHAO REN CONG-XIN and ZOU SHI-CHANG |
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| Abstract: | Ar ion implantation induced superconductivity change and structural change in YBa2Cu3O7-x epitaxial films have been studied. After implantation, not only Jc and Tc of the sa-mples decreased with the increasing of Ar ion fluence, but also a metal-to-semiconducfor transition occurred. The TEM photographs showed that the lattice frame of the implanted sa-mples was nearly unchanged under low fluence. Only at high fluence, the structure was comple-tely destroyed. According to the experimental results, we suggest that the degradation of Jc and Tc may mainly result from the disordering of oxygen sublattice. |
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