Title

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

Keywords

Epitaxy; Laser ablation; Low-loss substrate; Srlaalo 4; Yba Cu O 2 3 7 - δ

Abstract

SrLaAlO4 (SLAO) was used as a substrate for the epitaxial growth of YBa2Cu3O7-δ (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 Tc of over 90 K with a transition width of 0.5 K, which indicates a high-quality superconductor. © 1992 IOP Publishing Ltd.

Publication Date

1-1-1992

Publication Title

Japanese Journal of Applied Physics

Volume

31

Issue

4

Number of Pages

L402-L405

Document Type

Article

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1143/JJAP.31.L402

Socpus ID

0026850815 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0026850815

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