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Proceedings Paper

Spiral growth pattern of high-Tc superconducting thin films by laser deposition
Author(s): Biao Su; Yongqing Wang; Chengwu An; Yongchang Fan; Jinglian Dai; Dongsheng Lu
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Paper Abstract

In-situ laser deposition was used to fabricate YBa2Cu3O7-x superconducting films on YSZ substrates. The surface topography of YBa2Cu3O7-x thin films has been studied with both atomic force microscopy (AFM) and scanning tunneling microscopy (STM). A stepped surface is clearly observed on the mounds with a single step edge the originates from a screw dislocation at the center of the mound and moves out to the edge in a spiral fashion. The experimental result show that the spiral growth structure is an intrinsic character of superconductor films. The existence or absence of the spiral growth structure and the quality of the spiral structures may have significant implications for properties of the high temperature superconducting thin films. The new visual details may lead to improvements of YBCO films.

Paper Details

Date Published: 20 February 1998
PDF: 5 pages
Proc. SPIE 3175, Third International Conference on Thin Film Physics and Applications, (20 February 1998); doi: 10.1117/12.300668
Show Author Affiliations
Biao Su, Huazhong Univ. of Science and Technology (China)
Yongqing Wang, Huazhong Univ. of Science and Technology (China)
Chengwu An, Huazhong Univ. of Science and Technology (China)
Yongchang Fan, Huazhong Univ. of Science and Technology (China)
Jinglian Dai, Huazhong Univ. of Science and Technology (China)
Dongsheng Lu, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 3175:
Third International Conference on Thin Film Physics and Applications
Shixun Zhou; Yongling Wang; Yi-Xin Chen; Shuzheng Mao, Editor(s)

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