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Article

Chemical Solution Deposition of YBCO Films with Gd Excess

1
Superconductivity Section, FSN-COND, ENEA, Via Enrico Fermi 45, Frascati, 00044 Rome, Italy
2
Engineering Department, Roma Tre University, Via Vito Volterra 62, 00146 Rome, Italy
3
FSN-TECFIS-MNF, ENEA, v. E. Fermi 45, Frascati, 00044 Rome, Italy
4
Central Facility for Electron Microscopy, RWTH Aachen University, 52074 Aachen, Germany
5
Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (ER-C), Forschungszentrum Jülich GmbH, 52428 Jülich, Germany
6
Department of Chemical Sciences and Technologies, Tor Vergata University, Via della Ricerca Scientifica, 00133 Rome, Italy
*
Author to whom correspondence should be addressed.
Coatings 2020, 10(9), 860; https://doi.org/10.3390/coatings10090860
Received: 5 August 2020 / Revised: 25 August 2020 / Accepted: 2 September 2020 / Published: 4 September 2020
(This article belongs to the Special Issue Superconducting Films and Nanostructures)
Chemical solution deposition of Gd-doped YBCO, Y1GdyBa2Cu3O7−δ, (YBCO-Gd), film was carried out following the metal-organic decomposition approach and in situ route. Two dopant concentrations, 5 and 10 mol %, were evaluated. The morphology and crystalline structure of the superconductor films were deeply investigated. In general, a homogeneous and well c-axis oriented film was observed by using scanning and transmission electron microscopy (SEM and TEM) and X-ray diffraction. However, compared to pure YBCO, YBCO-Gd samples showed an increased stacking faults concentration, as recognized by TEM. X-ray photoelectron spectroscopy allowed studying the Gd distribution in the films and gathered information about the Gd electronic environment. Superconducting properties were evaluated at different temperatures, magnetic field directions, and intensities. Higher zero-field critical current densities were measured with respect to undoped samples in the temperature range from 10 to 77 K with both Gd concentrations (i.e., 28, 27, and 13 MA·cm−2, respectively, for YBCO-Gd 5%, YBCO-Gd 10%, and undoped YBCO at 10 K in self field condition). At low temperatures, this improvement was maintained up to 12 T, confirming the efficacy of Gd addition for the enhancement of transport properties of YBCO film. View Full-Text
Keywords: YBa2Cu3O7-δ (YBCO); GdBa2Cu3O7−δ (GdBCO); YGdyBa2Cu3O7−δ; chemical solution deposition (CSD); metal-organic decomposition (MOD); in situ approach; low-fluorine route; artificial pinning center (APC) YBa2Cu3O7-δ (YBCO); GdBa2Cu3O7−δ (GdBCO); YGdyBa2Cu3O7−δ; chemical solution deposition (CSD); metal-organic decomposition (MOD); in situ approach; low-fluorine route; artificial pinning center (APC)
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MDPI and ACS Style

Pinto, V.; Vannozzi, A.; Angrisani Armenio, A.; Rizzo, F.; Masi, A.; Santoni, A.; Meledin, A.; Ferrarese, F.M.; Orlanducci, S.; Celentano, G. Chemical Solution Deposition of YBCO Films with Gd Excess. Coatings 2020, 10, 860. https://doi.org/10.3390/coatings10090860

AMA Style

Pinto V, Vannozzi A, Angrisani Armenio A, Rizzo F, Masi A, Santoni A, Meledin A, Ferrarese FM, Orlanducci S, Celentano G. Chemical Solution Deposition of YBCO Films with Gd Excess. Coatings. 2020; 10(9):860. https://doi.org/10.3390/coatings10090860

Chicago/Turabian Style

Pinto, Valentina, Angelo Vannozzi, Achille Angrisani Armenio, Francesco Rizzo, Andrea Masi, Antonino Santoni, Alexander Meledin, Fabrizio M. Ferrarese, Silvia Orlanducci, and Giuseppe Celentano. 2020. "Chemical Solution Deposition of YBCO Films with Gd Excess" Coatings 10, no. 9: 860. https://doi.org/10.3390/coatings10090860

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