Texture of High Temperature Superconductor Thick Films Tl-1223 and Tl-2223/LaAlO3 Deposited by Spray Pyrolysis
Superconducting Tl-1223 and Tl-2223 films have been prepared in a two steps process : deposition of Ba:Ca:Cu = 2:2:3 precursor by spray pyrolysis and ex-situ thallination. Pure textured Tl-1223 films with good superconducting properties (Tc = 113K and Jc = 0.7 MA/cm2 at 77K, 0T) have been obtained. Almost pure Tl-2223 films have been obtained when precursor films have been thallinated with fluorinated sources.
B. Bacroix, J.H. Driver, R. Le Gall, Cl. Maurice, R. Penelle, H. Réglé and L. Tabourot
H. Nguyen Xuan et al., "Texture of High Temperature Superconductor Thick Films Tl-1223 and Tl-2223/LaAlO3 Deposited by Spray Pyrolysis ", Materials Science Forum, Vols. 467-470, pp. 591-596, 2004