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Structural and Superconducting Properties of Laser-Deposited (110)-Oriented YBa2Cu3O7-delta Thin Films After In Situ Annealing
Tekijät: Paturi P, Rajala M, Palonen H, Huhtinen H
Kustantaja: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Julkaisuvuosi: 2013
Journal: IEEE Transactions on Applied Superconductivity
Tietokannassa oleva lehden nimi: IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Lehden akronyymi: IEEE T APPL SUPERCON
Numero sarjassa: 3
Vuosikerta: 23
Numero: 3
Sivujen määrä: 4
ISSN: 1051-8223
DOI: https://doi.org/10.1109/TASC.2012.2233848
Tiivistelmä
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.
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.
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