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

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

Abstract

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.

Received: 05 December 1991
Accepted manuscript online:

PACS:	74.78.Bz
	74.72.Bk
	81.15.Cd	(Deposition by sputtering)
	74.25.Fy
	74.25.Sv	(Critical currents)
	68.37.Lp	(Transmission electron microscopy (TEM))

Fund: Project supported by the National Center for Research and Development on Superconductivity of China.

Cite this article:

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 1992 Acta Physica Sinica (Overseas Edition) 1 211

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

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