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.
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