Title :
Growth of TlBa/sub 2/CaCu/sub 2/O/sub 7/ thin films using a controlled Tl-oxide source during processing
Author :
Siegal, M.P. ; Missert, N. ; Venturini, E.L. ; Newcomer, P.P. ; Dominguez, F. ; Dunn, R.
Author_Institution :
Sandia Nat. Labs., Albuquerque, NM, USA
fDate :
6/1/1995 12:00:00 AM
Abstract :
TlBa/sub 2/CaCu/sub 2/O/sub 7/ superconducting films 5000-6000 /spl Aring/ thick have been grown on LaAlO/sub 3/(100) substrates using oxide precursors in a two-zone thallination furnace. Smooth, nearly phase-pure 1212 films are reported, with transition temperature (T/sub c/)/spl sim/87 K, and low-magnetic field critical current densities J/sub c/(5 K)/spl sim/1/spl times/10/sup 7/ and J/sub c/(40 K)/spl sim/2-10/sup 6/ A/cm/sup 2/.<>
Keywords :
barium compounds; calcium compounds; high-temperature superconductors; superconducting thin films; thallium compounds; 1212 films; LaAlO/sub 3/(100) substrates; TlBa/sub 2/CaCu/sub 2/O/sub 7/; TlBa/sub 2/CaCu/sub 2/O/sub 7/ thin films; controlled Tl-oxide source; growth; low-magnetic field critical current densities; oxide precursors; superconducting films; transition temperature; two-zone thallination furnace; Critical current density; Furnaces; High temperature superconductors; Substrates; Superconducting films; Superconducting materials; Superconducting microwave devices; Superconducting thin films; Superconducting transition temperature; Transistors;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
