Title
Reduced <tex>$J_{c}$</tex> anisotropy and enhanced in-field performance of thick <tex>$BaHfO_{3}$</tex>-doped <tex>$YBa_{2}Cu_{3}O_{7-\delta}$</tex> films on ABAD-YSZ templates Reduced <tex>$J_{c}$</tex> anisotropy and enhanced in-field performance of thick <tex>$BaHfO_{3}$</tex>-doped <tex>$YBa_{2}Cu_{3}O_{7-\delta}$</tex> films on ABAD-YSZ templates
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
New York, N.Y. ,
Subject
Physics
Source (journal)
IEEE transactions on applied superconductivity / IEEE [New York, N.Y.] - New York, N.Y.
Volume/pages
26(2016) :3 , 4 p.
ISSN
1051-8223
ISI
000376189700001
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Pure and 6 mol% BaHfO3 (BHO)-doped YBa2Cu3O7-δ (YBCO) films with a film thickness of around 1 μm were prepared on CeO2-buffered ABAD-YSZ templates by pulsed laser deposition. The self-field Jc at 77 K reaches 1.1 MA/cm2 in the doped sample compared with 2.5 MA/cm2 in pure YBCO. Above a magnetic field of 2.2 T along B||c, Jc of the BHO-doped sample exceeds the Jc of the undoped film. The maximum pinning force density (FP,max) reaches a value of around 3 GN/cm2 for both samples, but B(FP,max) increases from 1.4 T (pure) to a value of 2.9 T (BHO:YBCO). The Jc anisotropy curves of the doped sample show a large and broad peak at B||c and a strongly reduced anisotropy at all temperatures and fields compared with the pure sample. A complex defect structure with YBa2Cu4O8 intergrowths, Y2O3 precipitates, and BHO nanocolumns with a fan-shaped structure is observed by transmission electron microscopy investigations, which can explain the measured Jc(B, θ) behavior.
E-info
https://repository.uantwerpen.be/docman/iruaauth/6bb3fa/133779.pdf
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