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YBa₂Cu₃O_7-x超导薄膜的离子束改性

Ion Beam Modification of YBa₂Cu₃O_7-x Superconducting Thin Films

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【Author】 Li Yijie/Ion Beam Laboratory, Shanghai Institute of Metallurgy, Academia Sinica, Shanghai 200050Ren Congxin/Ion Beam Laboratory, Shanghai Institute of Metallurgy, Academia Sinica, Shanghai 200050Chen Guoliang/Ion Beam Laboratory, Shanghai Institute of Metallurgy, Academia Sinica, Shanghai 200050Chen Jianmin/Ion Beam Laboratory, Shanghai Institute of Metallurgy, Academia Sinica, Shanghai 200050Zou Shichang/Ion Beam Laboratory, Shanghai Institute of Metallurgy, Academia Sinica, Shanghai 200050

【机构】中国科学院上海冶金研究所离子束开放实验室；中国科学院上海冶金研究所离子束开放实验室上海200050；上海200050；上海200050；

【摘要】本文主要研究了离子注入对YBa₇Cu₃O_7-x薄膜超导性质的影响.测量了Ar离子注入剂量与超导转变温度T_c之间的关系.实验结果表明,高质量的YBa₂Cu₃O_7-x 超导薄膜具有一定的抗辐照性.随着注入剂量的增加,临界电流密度I_c下降很快,但零电阻转变温度T_c却下降较慢.分析和讨论了离子注入对YBa₂Cu₃O_7-x中一维Cu-O链和二维Cu-O面的影响,探讨了离子束改性手段在YBa₂Cu₃O_7-x超导薄膜图形加工中应用的可能性.更多还原

【Abstract】 The effect of Ar ion implantation on superconducting properties of YBa₂Cu₃O_7-x thinfilms have been studied with resistance measurements and X-ray diffraction. The experi-mental results show that YBa₂Cu₃O_7-x films with high quality had some resistibility to ion ir-radiation.As the Ar ion dose increases,The transition temperature T_c decreases slowly, butthe critical current density J_c deceases very fast We discussed the influence of Ar ion implan-ration upon one-dimensional Cu-O chains and two-dimensional Cu-O planes.We also explo-red the possibility of using ion implantation technique to pattern YBa₂Cu₃O_7-x superconduc-ting thin films and to make superconducting electronic devices.更多还原