Title :
Superconducting (TlBi)/sub 0.9/Sr/sub 1.6/Ba/sub 0.4/Ca/sub 2/Cu/sub 3/Ag/sub 0.2/O/sub x/ films from electrodeposited precursors
Author :
Bhattacharya, R.N. ; Parilla, P.A. ; Blaugher, R.D. ; Ren, Z.F. ; Li, W. ; Wang, J.H. ; Wang, Y.T. ; Hermann, A.M. ; Paranthaman, M. ; Goyal, A. ; Verebelyi, D.T. ; Christen, D.K.
Author_Institution :
Nat. Renewable Energy Lab., Golden, CO, USA
fDate :
6/1/1999 12:00:00 AM
Abstract :
A low-cost electrodeposition (ED) method is reported for fabrication of high-temperature Tl-oxide-based superconductors. Recent studies on the development of biaxially textured ED films on single-crystal and rolling-assisted biaxially textured Ni substrates are presented. Pole-figure measurements of electrodeposited (Tl,Bi)-(Sr,Ba)-Ca-Cu-Ag-O (TBSBCCO) films, with thicknesses between 1-5 /spl mu/m, clearly show strong biaxial texturing. The rocking curve and phi scan of TBSBCCO on 300 /spl Aring/ Ag/LaAlO/sub 3/, show a full width half maximum (FWHM) of only 0.9/spl deg/ and 1.2/spl deg/, respectively, consistent with a very high-quality. Transport measurements for the ED films show J/sub c/ values up to 7.84/spl times/10/sup 5/ A/cm/sup 2/ at 77 K in zero magnetic field. The preliminary results of electrodeposited TBSBCCO film on CeO/sub 2//YSZ/CeO/sub 2/ on textured Ni showed primarily 1212 phase with a transport critical current density of 1.36/spl times/10/sup 5/ A/cm/sup 2/ at 77 K in zero field.
Keywords :
barium compounds; bismuth compounds; calcium compounds; critical current density (superconductivity); electrodeposition; high-temperature superconductors; strontium compounds; superconducting thin films; texture; thallium compounds; (TlBi)/sub 0.9/Sr/sub 1.6/Ba/sub 0.4/Ca/sub 2/Cu/sub 3/Ag/sub 0.2/O; 1212 phase; 77 K; CeO/sub 2/; CeO/sub 2//YSZ/CeO/sub 2/; Ni; Y/sub 2/O/sub 3/ZrO/sub 2/; electrodeposited precursors; fabrication; high-temperature Tl-oxide-based superconductors; low-cost electrodeposition; pole-figure measurements; rocking curve; rolling-assisted biaxially textured Ni substrate; single-crystal Ni substrate; superconducting (TlBi)/sub 0.9/Sr/sub 1.6/Ba/sub 0.4/Ca/sub 2/Cu/sub 3/Ag/sub 0.2/O/sub x/ films; transport critical current density; transport measurements; zero magnetic field; Fabrication; High temperature superconductors; Laboratories; Magnetic field measurement; Magnetic films; Renewable energy resources; Strontium; Substrates; Superconducting films; Wire;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
