Enhancement and angular dependence of transport critical current density in pulsed laser deposited YBa2Cu3O7-x+BaSnO 3 films in applied magnetic fields

Published

Journal Article

Y Ba2 Cu3 O7-x (YBCO) films with nanoparticles of BaSn O3 (BSO) were processed using pulsed laser ablation of a special target made with dual phase sectors of YBCO and BSO. Transport critical current density (Jct) of these YBCO+BSO films in applied magnetic fields and angular dependence of Jct on the applied field orientation was measured. It was observed that in the YBCO+BSO films, the Jct (H∥c orientation) increased considerably as compared to regular YBCO films and was 1.3 times higher than Jct in H∥ab orientation. Cross-sectional transmission electron microscopy images on YBCO+BSO films showed the presence of high density (3.5× 1011 cm-2) of nanoparticles (∼10 nm size) and nanocolumns that extended throughout the thickness of the films with high density of dislocations and stacking faults (1000 μ m-2). The observed results of enhancements in Jct in H∥c and Jct in H∥ab orientations were discussed in the light of the observed microstructural details. © 2007 American Institute of Physics.

Full Text

Cited Authors

  • Varanasi, CV; Burke, J; Brunke, L; Wang, H; Sumption, M; Barnes, PN

Published Date

  • October 8, 2007

Published In

Volume / Issue

  • 102 / 6

International Standard Serial Number (ISSN)

  • 0021-8979

Digital Object Identifier (DOI)

  • 10.1063/1.2783783

Citation Source

  • Scopus