YBa2Cu3O7-delta films have been prepared by spin-coating solutions of metal
acetates dissolved in trifluoroacetic acid/methanol and trifluoroacetic ac
id/isopropanoyl/1,3 propanediol onto LaAlO3 (100) substrates. By using a ra
pid, low pO(2) pyrolysis process, high-quality diol films (0.25 mum thick)
with J(c) values as high as 14 MA/cm(2) and 2 MA/cm(2) at 7 K and 77 K, res
pectively, were fabricated in one tenth the time, compared to conventional
processing schemes. The effect of multicoating, in order to reach YBCO film
thicknesses of 1.5 mum, on the J(c) was also studied.