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Proceedings Paper

Single crystallinity and oxygen diffusion in high-quality YBa2Cu3O7-delta films
Author(s): Zi Liang Wu; M. Z. Wei; Yi-Xin Chen; Cong Xin Ren; Jihong Zhang
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Paper Abstract

High quality epitaxial YBa2Cu3O7-(delta) films prepared by d.c. magnetron sputtering are single crystalline containing mosaic blocks, the boundaries of which consist of arrays of dislocations piling up into walls. Low temperature oxygenation in the orthorhombic phase is carried out by pipe diffusion in the basal planes. An equation has been derived from the dislocation model of low angle tilting grain boundary which predicts a linear relationship between the oxygen increase 1-(delta) and t3/4, where t is the diffusion time. Two straight lines were established for oxygen anneal respectively at 300 degree(s)C and 350 degree(s)C and these verified the proposed model explicitly. From slops of these two straight lines, an activation energy of 1.18 eV for lattice diffusion of oxygen is obtained.

Paper Details

Date Published: 1 November 1991
PDF: 7 pages
Proc. SPIE 1519, International Conference on Thin Film Physics and Applications, (1 November 1991); doi: 10.1117/12.47338
Show Author Affiliations
Zi Liang Wu, Shanghai Institute of Metallurgy (China)
M. Z. Wei, Shanghai Institute of Metallurgy (China)
Yi-Xin Chen, Shanghai Institute of Metallurgy (China)
Cong Xin Ren, Shanghai Institute of Metallurgy (China)
Jihong Zhang, Shanghai Institute of Metallurgy (China)


Published in SPIE Proceedings Vol. 1519:
International Conference on Thin Film Physics and Applications

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