A new hybrid two-zone/crucible furnace process for the growth of epitaxial Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8} superconducting films

Journal Article · Tue Dec 01 04:00:00 EST 1998 · Journal of Materials Research

DOI:https://doi.org/10.1557/JMR.1998.0453· OSTI ID:292709

Siegal, M P; Overmyer, D L; Venturini, E L; Dominguez, F; Padilla, R R ^[1]

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1. Sandia National Laboratories, Albuquerque, New Mexico 87185-1421 (United States)

Epitaxial Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8} (Tl-2212) films {approximately}5500 {Angstrom} thick are grown on LaAlO{sub 3}(100) substrates using a new hybrid two-zone/crucible furnace process enabling precise control of thallination. This method combines the best features of both conventional crucible and two-zone processing for the first time: superb film properties and reduced handling of hazardous Tl-oxide powders. Single-phase, highly {ital c}-axis oriented Tl-2212 films are grown with smooth morphology, Meissner transition {approximately}103 K, and critical current density {approximately}1.1{times}10{sup 7}A/cm{sup 2} at 5 K for twenty consecutive runs without having to change or add to the Tl-oxide source. {copyright} {ital 1998 Materials Research Society.}

• Research Organization: Sandia National Laboratory
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 292709
• Journal Information: Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 12 Vol. 13; ISSN JMREEE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CRYSTAL GROWTH
CRYSTAL GROWTH METHODS
CRYSTAL STRUCTURE
EPITAXY
HIGH-TC SUPERCONDUCTORS
OXYGEN COMPOUNDS
SUPERCONDUCTING FILMS
TEXTURE
THALLIUM COMPOUNDS
THALLIUM OXIDES
TRANSITION TEMPERATURE