A1 Refereed original research article in a scientific journal
Modeling flux pinning in thin undoped and BaZrO3-doped YBCO films
Authors: Paturi P, Irjala M, Huhtinen H, Abrahamsen AB
Publisher: AMER INST PHYSICS
Publication year: 2009
Journal:: Journal of Applied Physics
Journal name in source: JOURNAL OF APPLIED PHYSICS
Journal acronym: J APPL PHYS
Volume: 105
Issue: 2
Number of pages: 8
ISSN: 0021-8979
DOI: https://doi.org/10.1063/1.3066857
Abstract
A simple model based on distributions of twin boundaries, dislocations, and BaZrO3 nanorods is presented to describe the J(c) properties of undoped and BaZrO3 (BZO)-doped YBa2Cu3Ox thin films. The model accurately describes the shape of J(c)(B,T) curves of the films, when the pinning site distributions are taken from distributions of twin spacings and BZO nanorods from transmission electron microscope images. Thus, assuming that the model can be used for prediction of the J(c) properties, we conclude that for enhancement of undoped films more crystalline defects are needed and for doped films a dopant that would create slightly larger rods would be optimal.
A simple model based on distributions of twin boundaries, dislocations, and BaZrO3 nanorods is presented to describe the J(c) properties of undoped and BaZrO3 (BZO)-doped YBa2Cu3Ox thin films. The model accurately describes the shape of J(c)(B,T) curves of the films, when the pinning site distributions are taken from distributions of twin spacings and BZO nanorods from transmission electron microscope images. Thus, assuming that the model can be used for prediction of the J(c) properties, we conclude that for enhancement of undoped films more crystalline defects are needed and for doped films a dopant that would create slightly larger rods would be optimal.
UTU Research Portal