A new hybrid two-zone/crucible furnace process for the growth of epitaxialTl2Ba2CaCu2O8 superconducting films

Authors
Siegal, MP Overmyer, DL Venturini, EL Dominguez, F Padilla, RR
Citation
Mp. Siegal et al., A new hybrid two-zone/crucible furnace process for the growth of epitaxialTl2Ba2CaCu2O8 superconducting films, J MATER RES, 13(12), 1998, pp. 3349-3352
Citations number
9
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF MATERIALS RESEARCH
ISSN journal
08842914 → ACNP
Volume
13
Issue
12
Year of publication
1998
Pages
3349 - 3352
Database
ISI
SICI code
0884-2914(199812)13:12<3349:ANHTFP>2.0.ZU;2-H
Abstract
Epitaxial Tl2Ba2CaCu2O8 (Tl-2212) films similar to 5500 Angstrom thick are grown on LaAlO3(100) substrates using a new hybrid two-zone/crucible furnac e process enabling precise control of thallination. This method combines th e best features of both conventional crucible and two-zone processing for t he first time: superb film properties and reduced handling of hazardous Tl- oxide powders. Single-phase, highly c-axis oriented Tl-2212 films are grown with smooth morphology, Meissner transition similar to 103 K, and critical current density similar to 1.1 x 10(7) A/cm(2) at 5 K for twenty consecuti ve runs without having to change or add to the Tl-oxide source.