J. Koshy et al., DEVELOPMENT AND CHARACTERIZATION OF GDBA2NBO6, A NEW CERAMIC SUBSTRATE FOR YBCO THICK-FILMS, Materials letters, 17(6), 1993, pp. 393-397
The development and characterization of a new substrate material GdBa2
NbO6, having moderately low dielectric constant and loss factor at MHz
frequencies are reported. It has been found that superconducting YBa2
Cu3O7-delta does not react with GdBa2NbO6 even after a 1:1 volume mixt
ure was heated at 950 degrees C for 15 h. The suitability of GdBa2NbO6
as a substrate for YBa2Cu3O7-delta thick films was confirmed by fabri
cating a thick film of YBa2Cu3O7-delta on this substrate by screen pri
nting which gave a zero-resistivity superconducting transition at T-c(
0)=92 K with a transition width of 2 K.