Title

High-Quality Yba2Cu3O7-Delta Thin-Films Grown On Srlaalo4(001) And (1118) Substrates

Authors

Authors

K. H. Young;B. H. T. Chai

Comments

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Abbreviated Journal Title

Jpn. J. Appl. Phys. Part 2 - Lett.

Keywords

Srlaaio4; Yba2Cu3O7-Delta; Low-Loss Substrate; Laser Ablation; Epitaxy; Microwave; Physics, Applied

Abstract

SrLaAlO4 (SLAO) was used as a substrate for the epitaxial growth of YBa2Cu3O7-delta (YBCO) thin films. This material has dielectric properties comparable to those of the commonly used LaAlO3 substrate. The lattice mismatch between SLAO (001) and YBCO (001) is about 3%. Two substrate orientations, cleaved (001) and polished (1118), have been used in this study. YBCO thin films were grown epitaxially from both orientations by in situ laser ablation. The stepped morphology of the cleaved SLAO (001) surface promoted the growth of YBCO along the a-axis. In the case of the SLAO (1118), YBCO (1118) was grown with its c-axis aligned along the c-axis of SLAO. The YBCO (1118) has a T(c) of over 90 K with a transition width of 0.5 K, which indicates a high-quality superconductor.

Journal Title

Japanese Journal of Applied Physics Part 2-Letters

Volume

31

Issue/Number

4A

Publication Date

1-1-1992

Document Type

Article

Language

English

First Page

L402

Last Page

L405

WOS Identifier

WOS:A1992HP06500010

ISSN

0021-4922

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