Enhancement and Angular Dependence of Transport Critical Current Density in Pulsed Laser Deposited YBa2Cu3O7-x+BaSnO3 Films in Applied Magnetic Fields (Postprint)
Abstract
YBa2Cu3O7-x (YBCO) films with nanoparticles of BaSnO3 (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 (3.5x10(exp 11) cm(exp -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 microns (exp -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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 25, 2007
- Accession Number
- ADA562212
Entities
People
- Chakrapani V. Varanasi
- Hao Wang
- John H. Burke
- L. Brunke
- Mike Sumption
- Paul N. Barnes
Organizations
- Air Force Research Laboratory