Structural and Superconducting Properties of Laser-Deposited (110)-Oriented YBa2Cu3O7-delta Thin Films After In Situ Annealing



: Paturi P, Rajala M, Palonen H, Huhtinen H

Publisher: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

: 2013

 IEEE Transactions on Applied Superconductivity

: IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY

: IEEE T APPL SUPERCON

: 3

: 23

: 3

: 4

: 1051-8223

DOI: https://doi.org/10.1109/TASC.2012.2233848


Deposition and in situ oxygen annealing of YBa2Cu3O7-delta (YBCO) thin films with < 110 > perpendicular to the plane of the film were systematically studied for the detailed structure and superconducting properties of the films. The films were grown on SrTiO3 (110) crystals with PrBa2Cu3O7-delta (110) (PrBCO) buffer layer by pulsed laser deposition, and afterwards in situ annealed in normal O-2 pressure at different temperatures between 550 degrees C and 925 degrees C. It was found that superconducting properties cannot be induced in the (110) oriented phase with annealing; instead high-temperature annealing rearranged some of the material in the films to (103) and (001) orientations, which were found partly superconducting even at 90 K.


(110) orientation, In situ annealing, YBCO thin films



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