SUPERCONDUCTING PROPERTIES AND STRUCTURAL PERFECTION OF EPITAXIAL YBa2Cu3O7-x THIN FILMS

doi:10.1088/1004-423X/1/3/007

中国物理B ›› 1992, Vol. 1 ›› Issue (3): 211-218.doi: 10.1088/1004-423X/1/3/007

SUPERCONDUCTING PROPERTIES AND STRUCTURAL PERFECTION OF EPITAXIAL YBa₂Cu₃O_7-x THIN FILMS

李贻杰¹, 熊光成¹, 甘子钊¹, 任琮欣², 陈国梁², 邹世昌²

(1)Department of Physics, Peking University, Beijing 100871, China; (2)Ion Beam Laboratory, Shanghai Institute of Metallurgy, Academia Sinica, Shanghai 200050, China

收稿日期:1991-12-05 出版日期:1992-03-20 发布日期:1992-03-20
基金资助:
Project supported by the National Center for Research and Development on Superconductivity of China.

SUPERCONDUCTING PROPERTIES AND STRUCTURAL PERFECTION OF EPITAXIAL YBa₂Cu₃O_7-x THIN FILMS

LI YI-JIE (李贻杰)^a, XIONG GUANG-CHENG (熊光成)^a, GAN ZI-ZHAO (甘子钊)^a, REN CONG-XIN (任琮欣)^b, CHEN GUO-LIANG (陈国梁)^b, ZOU SHI-CHANG (邹世昌)^b

^a Department of Physics, Peking University, Beijing 100871, China; ^b Ion Beam Laboratory, Shanghai Institute of Metallurgy, Academia Sinica, Shanghai 200050, China

Received:1991-12-05 Online:1992-03-20 Published:1992-03-20
Supported by:
Project supported by the National Center for Research and Development on Superconductivity of China.

摘要/Abstract

摘要： High quality epitaxial YBa₂Cu₃O_7-x thin films have been succcessfully prepared by dc magnetron sputtering deposition, on (100) and (110) aligned SrTiO₃, LaAlO₃ and yttria-stabilized zirconia (YSZ) substrates. The films showed zero resistance around 90 K and had a J_c (at 77 K, H=0) over 10⁶A/cm². It was found that superconducting properties and structures of the films were strongly dependent on oxygen pressure and substrate temperature. The epitaxial structure of the films have been studied by X-ray diffraction. Rutherford backscattering and channeling spectroscopy, X-ray double-crystal diffraction and transmission election microscopy. The experimental results demonstrated that the epitaxial YBa₂Cu₃O_7-x films had excellent superconducting properties and quite perfect structure.

Abstract: High quality epitaxial YBa₂Cu₃O_7-x thin films have been succcessfully prepared by dc magnetron sputtering deposition, on (100) and (110) aligned SrTiO₃, LaAlO₃ and yttria-stabilized zirconia (YSZ) substrates. The films showed zero resistance around 90 K and had a J_c (at 77 K, H=0) over 10⁶A/cm². It was found that superconducting properties and structures of the films were strongly dependent on oxygen pressure and substrate temperature. The epitaxial structure of the films have been studied by X-ray diffraction. Rutherford backscattering and channeling spectroscopy, X-ray double-crystal diffraction and transmission election microscopy. The experimental results demonstrated that the epitaxial YBa₂Cu₃O_7-x films had excellent superconducting properties and quite perfect structure.

中图分类号:

74.78.Bz

81.15.Cd (Deposition by sputtering) 74.25.Sv (Critical currents) 68.37.Lp (Transmission electron microscopy (TEM))

李贻杰, 熊光成, 甘子钊, 任琮欣, 陈国梁, 邹世昌. SUPERCONDUCTING PROPERTIES AND STRUCTURAL PERFECTION OF EPITAXIAL YBa₂Cu₃O_7-x THIN FILMS[J]. 中国物理B, 1992, 1(3): 211-218.

LI YI-JIE (李贻杰), XIONG GUANG-CHENG (熊光成), GAN ZI-ZHAO (甘子钊), REN CONG-XIN (任琮欣), CHEN GUO-LIANG (陈国梁), ZOU SHI-CHANG (邹世昌). SUPERCONDUCTING PROPERTIES AND STRUCTURAL PERFECTION OF EPITAXIAL YBa₂Cu₃O_7-x THIN FILMS[J]. Acta Physica Sinica (Overseas Edition), 1992, 1(3): 211-218.

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SUPERCONDUCTING PROPERTIES AND STRUCTURAL PERFECTION OF EPITAXIAL YBa₂Cu₃O_7-x THIN FILMS

SUPERCONDUCTING PROPERTIES AND STRUCTURAL PERFECTION OF EPITAXIAL YBa₂Cu₃O_7-x THIN FILMS

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