Stability of Tl-Ba-Ca-Cu-O superconducting thin films

Journal Article · Wed Dec 01 04:00:00 EST 1999 · Journal of Materials Research

DOI:https://doi.org/10.1557/JMR.1999.0609· OSTI ID:20215441

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

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

We report the stability of TlBa{sub 2}CaCu{sub 2}O{sub 7} and Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8} on LaAlO{sub 3}(100) epitaxial thin films, under a variety of conditions. All films are stable in acetone and methanol and with repeated thermal cycling to cryogenic temperatures. Moisture, especially vapor, degrades film quality rapidly. These materials are stable to high temperatures in either N{sub 2} or O{sub 2} ambients. While total degradation, resulting from Tl depletion, occurs at the same temperatures for both phases, 600 degree sign C in N{sub 2} and 700 degree sign C in O{sub 2}, the onset of degradation occurs at somewhat lower temperatures for TlBa{sub 2}CaCu{sub 2}O{sub 7} than for Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8}. (c) 1999 Materials Research Society.

• OSTI ID: 20215441
• Journal Information: Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 12 Vol. 14; ISSN JMREEE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
CALCIUM OXIDES
COPPER OXIDES
CORROSION
CRITICAL CURRENT
EXPERIMENTAL DATA
HIGH-TC SUPERCONDUCTORS
MOISTURE
STABILITY
SUPERCONDUCTING FILMS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0400-1000 K
THALLIUM OXIDES
THERMAL DEGRADATION
THIN FILMS