Epitaxial SrTiO3 buffer layers for YBa2Cu3O7-delta superconducting thin films on MgO substrate

Authors
Mori, Z Nakagama, T Higo, S Doi, T Koba, S Hakuraku, Y
Citation
Z. Mori et al., Epitaxial SrTiO3 buffer layers for YBa2Cu3O7-delta superconducting thin films on MgO substrate, INT J MOD B, 14(9), 2000, pp. 1007-1016
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
ISSN journal
02179792 → ACNP
Volume
14
Issue
9
Year of publication
2000
Pages
1007 - 1016
Database
ISI
SICI code
0217-9792(20000410)14:9<1007:ESBLFY>2.0.ZU;2-O
Abstract
SrTiO3 (STO) thin film was prepared on single crystal MgO (100) substrate b y rf magnetron sputtering as a buffer layer of superconducting thin film. S puttering conditions influence to the structural property were investigated . Highly epitaxial a-axis oriented STO thin film with extremely smooth surf ace was obtained by optimizing the sputtering parameters. YBa2Cu3O7-delta ( YBCO) thin film with critical temperature (T-c) of 89.8 K was obtained on S TO buffer. Surface morphology of YBCO thin film was also improved. The effe cts of STO buffer were discussed in comparison with YBCO thin films on MgO substrate.