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Proceedings Paper

Effect of preparation on the growth mode and structure in laser MBE grown multilayer of SrTiO3 and YBa2Cu3Oy
Author(s): Zhenping Wu; Jin Long Li; Jianhua Hao
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Paper Abstract

Multilayer of SrTiO3(STO)-YBa2Cu3O7-δ(YBCO) was fabricated by laser molecular beam epitaxy (LMBE). The properties of multilayer in terms of growth modes, strain and interface structures were characterized by the in situ reflective high energy electron diffraction (RHEED) pattern, and ex situ measurements, such as atomic force microscope (AFM). By controlling growth and processing conditions, we observed a change of different growth modes of thin films. Furthermore, we also demonstrate a strong dependence of growth modes in YBCO films on the growth fashion of STO films, which could be explained in terms of the stress effect at the interface. The dependence of interface stress on thickness and growth condition was determined with AFM. These results provide an understanding and manipulating growth mechanism of the films.

Paper Details

Date Published: 17 September 2007
PDF: 4 pages
Proc. SPIE 6643, Physical Chemistry of Interfaces and Nanomaterials VI, 66430L (17 September 2007); doi: 10.1117/12.731080
Show Author Affiliations
Zhenping Wu, The Hong Kong Polytechnic Univ. (Hong Kong China)
Jin Long Li, The Hong Kong Polytechnic Univ. (Hong Kong China)
Jianhua Hao, The Hong Kong Polytechnic Univ. (Hong Kong China)

Published in SPIE Proceedings Vol. 6643:
Physical Chemistry of Interfaces and Nanomaterials VI
Piotr Piotrowiak; Garry Rumbles, Editor(s)

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