T. Maeda et al., Characterization of YBa2Cu3O7-delta films grown on NiO buffer layer by liquid-phase epitaxy process, PHYSICA C, 357, 2001, pp. 1042-1045
By means of a liquid-phase epitaxy (LPE) process, superconducting YBa2Cu3O7
-delta (YBCO) thick film is grown on a biaxially textured NiO buffer layer
which is pulsed-laser deposited on a (0 0 1) surface of SrTiO3 single cryst
al. Employment of BaF2-added Ba-Cu-O flux is found to be effective for LPE-
YBCO growth because the growth temperature of YBCO is drastically lowered d
own to 900-920 degreesC compared to the case of usually used simple Ba-Cu-O
flux. This strongly suggests that the low-temperature LPE growth of YBCO o
n a NiO/Ni substrate is hopeful process for coated-conductor production. Su
perconductivity transition temperature (T-c) of the LPE-YBCO film is measur
ed to be 91 K for onset and 87 K for a zero-resistance state. (C) 2001 Else
vier Science B.V. All rights reserved.