Preparation of cathodic arc deposited HTSC Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+y/-Ag composite thin films on Ag substrates

Author

Chae, M.S. ; Maple, M.B. ; Simnad, M.T. ; Anders, S. ; Anders, A. ; Brown, I.G.

Author_Institution

Inst. for Pure & Appl. Phys. Sci., California Univ., San Diego, La Jolla, CA, USA

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

2011

Lastpage

2014

Abstract

Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+y/-Ag composite thin films on Ag substrates were prepared by cathodic arc deposition of alloy precursors. The deposition technique employed a cathode comprised of a precursor alloy for the vacuum arc plasma source. The precursor alloy was prepared by multiple arc-melting of mixed metallic constituents of the high-temperature superconducting material Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+y/ (BSCCO-2212) and 50 wt.% of Ag. The presence of silver in the precursor alloy film was expected to allow accommodation of the lattice and thermal expansion mismatch between the oxidized film and the silver substrate. Following deposition, controlled oxidation of the precursor alloy thin film on the Ag substrate was performed to produce the superconducting composite on the silver substrate, After the heat treatment, the composite film consisted of single phase BSCCO-2212 highly c-axis oriented normal to the Ag substrate.<>

Keywords

bismuth compounds; calcium compounds; composite superconductors; heat treatment; high-temperature superconductors; oxidation; plasma deposition; silver; strontium compounds; superconducting thin films; thermal expansion; Ag; Ag substrates; Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+y/-Ag composite thin films; Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8/-Ag; alloy precursors; cathodic arc deposited composite thin films; cathodic arc deposition; controlled oxidation; heat treatment; high temperature superconductors; lattice mismatch; mixed metallic constituents; multiple arc-melting; oxidized film; single phase; thermal expansion mismatch; vacuum arc plasma source; Bismuth; Cathodes; Silver; Sputtering; Strontium; Substrates; Superconducting films; Superconducting materials; Superconducting thin films; Vacuum arcs;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.402981

Filename

402981