Influence of Ba2+ consumption and intermediate dwelling during processing of YBa2Cu3O7 nanocomposite films

Achieving high‐critical current densities (Jc) with small artificial pinning centers is a crucial challenge for YBa2Cu3O7−δ (YBCO) nanocomposite thin films fabricated using chemical solution deposition methods. In this work, the YBCO texture, structure purity, and its Jc properties were improved by...

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Bibliographic Details
Published inJournal of the American Ceramic Society Vol. 102; no. 7; pp. 3870 - 3878
Main Authors Rijckaert, Hannes, Hänisch, Jens, Pollefeyt, Glenn, Bäcker, Michael, Van Driessche, Isabel
Format Journal Article
LanguageEnglish
Published Columbus Wiley Subscription Services, Inc 01.07.2019
Subjects
chemical solution deposition
Consumption
Critical current density
low‐fluorine YBCO
nanocomposite
Nanocomposites
Nanocrystals
nanoparticles
Nucleation
Organic chemistry
Size distribution
Thin films
vortex pinning
YBCO superconductors
Zirconium dioxide
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Summary:Achieving high‐critical current densities (Jc) with small artificial pinning centers is a crucial challenge for YBa2Cu3O7−δ (YBCO) nanocomposite thin films fabricated using chemical solution deposition methods. In this work, the YBCO texture, structure purity, and its Jc properties were improved by understanding the influence of preformed ZrO2 nanocrystals (Ba2+ consumption) during the nucleation and growth mechanism. This comprehensive study leads to an additional intermediate dwelling step during thermal process to increase the YBCO nuclei density before the YBCO growth, resulting to a self‐field Jc of 5‐6 MA/cm2 at 77 K for undoped and ZrO2‐doped YBCO films. Counter‐intuitively, the space and size distribution of the ZrO2 nanocrystals in the YBCO matrix are independent of this intermediate dwelling step.
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.16228