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Chemical solution deposition of Y₁₋ₓGdₓBa₂Cu₃O$_{7-δ}$ –BaHfO₃ nanocomposite films: combined influence of nanoparticles and rare-earth mixing on growth conditions and transport properties

Cayado, Pablo; Erbe, Manuela; Kauffmann-Weiss, Sandra; Jung, Alexandra; Hänisch, Jens; Holzapfel, Bernhard

Abstract:
Y1−xGdxBa2Cu3O7−δ–BaHfO3 (YGBCO–BHO) nanocomposite films containing 12 mol% BHO nanoparticles and different amounts of Gd were prepared by chemical solution deposition following the trifluoroacetic route on SrTiO3 single crystals in order to study the influence of the rare earth stoichiometry on structure, morphology and superconducting properties of these films. We optimized the growth process for each of several Gd contents of the 220 nm thick YGBCO–BHO films by varying crystallization temperature and oxygen partial pressure. This optimization process led to the conclusion that mixing the rare earths in YGBCO–BHO films leads to wider growth parameter windows compared to YBCO-BHO and GdBCO-BHO films giving larger freedom for selecting the most convenient processing parameters in order to adapt to different substrates or applications which is very important for the industrial production of coated conductors. The optimized films show a continuous increase of Tc with Gd content x from ∼90 K for the YBCO-BHO films to ∼94 K for the GdBCO-BHO films. Consequently, an increase of the 77 K self-field Jc with Gd content is observed reaching ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000088788
Veröffentlicht am 21.01.2019
Originalveröffentlichung
DOI: 10.1039/C8RA09188A
Zugehörige Institution(en) am KIT Institut für Technische Physik (ITEP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 2046-2069
urn:nbn:de:swb:90-887889
KITopen-ID: 1000088788
HGF-Programm 37.06.02 (POF III, LK 01)
Erschienen in RSC Advances
Band 8
Heft 74
Seiten 42398–42404
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
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