A1 Refereed original research article in a scientific journal
Magnetic field dependence of the optimal BaZrO3 concentration in nanostructured YBa2Cu3O7-delta films
Authors: Safonchik M, Traito K, Tuominen S, Paturi P, Huhtinen H, Laiho R
Publisher: IOP PUBLISHING LTD
Publication year: 2009
Journal:: Superconductor Science and Technology
Journal name in source: SUPERCONDUCTOR SCIENCE & TECHNOLOGY
Journal acronym: SUPERCOND SCI TECH
Volume: 22
Issue: 6
Number of pages: 5
ISSN: 0953-2048
DOI: https://doi.org/10.1088/0953-2048/22/6/065006
Abstract
The resistivity of YBa2Cu3O7-delta (YBCO) films deposited by a pulsed laser from nanograined targets doped with various amounts of BaZrO3 (BZO) is investigated in the thermally activated flux-flow (TAFF) regime, where the activation energy, U, has a linear temperature dependence. It is found that the magnetic field dependence of the irreversibility temperature, T-irr(B), has a maximum at some optimal BZO concentration, which depends on the applied magnetic field. Our results show that the superconducting materials used in different magnetic fields need optimization of the dopant concentration to achieve the best properties for various applications.
The resistivity of YBa2Cu3O7-delta (YBCO) films deposited by a pulsed laser from nanograined targets doped with various amounts of BaZrO3 (BZO) is investigated in the thermally activated flux-flow (TAFF) regime, where the activation energy, U, has a linear temperature dependence. It is found that the magnetic field dependence of the irreversibility temperature, T-irr(B), has a maximum at some optimal BZO concentration, which depends on the applied magnetic field. Our results show that the superconducting materials used in different magnetic fields need optimization of the dopant concentration to achieve the best properties for various applications.
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