Magnetic field dependence of the optimal BaZrO3 concentration in nanostructured YBa2Cu3O7-delta films



: Safonchik M, Traito K, Tuominen S, Paturi P, Huhtinen H, Laiho R

Publisher: IOP PUBLISHING LTD

: 2009

Superconductor Science and Technology

SUPERCONDUCTOR SCIENCE & TECHNOLOGY

: SUPERCOND SCI TECH

: 22

: 6

: 5

: 0953-2048

DOI: https://doi.org/10.1088/0953-2048/22/6/065006


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.



Last updated on 2025-14-10 at 10:15