scholarly journals Chemical solution deposition of Y1−xGdxBa2Cu3O7−δ–BaHfO3 nanocomposite films: combined influence of nanoparticles and rare-earth mixing on growth conditions and transport properties

RSC Advances ◽  
2018 ◽  
Vol 8 (74) ◽  
pp. 42398-42404 ◽  
Author(s):  
Pablo Cayado ◽  
Manuela Erbe ◽  
Sandra Kauffmann-Weiss ◽  
Alexandra Jung ◽  
Jens Hänisch ◽  
...  

Superconducting Y1–xGdxBa2Cu3O7–δ–BaHfO3 nanocomposite films were prepared by chemical solution deposition on SrTiO3 substrates in order to study the influence of the rare earth stoichiometry on their structure, morphology and electrical properties.

Nanomaterials ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 21 ◽  
Author(s):  
Pablo Cayado ◽  
Hannes Rijckaert ◽  
Manuela Erbe ◽  
Marco Langer ◽  
Alexandra Jung ◽  
...  

Chemical solution deposition (CSD) was used to grow Y1−xGdxBa2Cu3O7−δ-BaHfO3 (YGBCO-BHO) nanocomposite films containing 12 mol% BHO nanoparticles and various amounts of Gd, x, on two kinds of buffered metallic tapes: Ni5W and IBAD. The influence of the rare-earth stoichiometry on structure, morphology and superconducting properties of these films was studied. The growth process was carefully studied in order to find the most appropriate growth conditions for each composition and substrate. This led to a clear improvement in film quality, probably due to the reduction of BaCeO3 formation. In general, the superconducting properties of the films on Ni5W are significantly better. For x > 0.5, epitaxial ~270 nm thick YGBCO-BHO films with Tc > 93 K and self-field Jc at 77 K ~2 MA/cm² were obtained on Ni5W. These results highlight the potential of this approach for the fabrication of high-quality coated conductors.


RSC Advances ◽  
2015 ◽  
Vol 5 (94) ◽  
pp. 76783-76787 ◽  
Author(s):  
H. L. Wang ◽  
X. K. Ning ◽  
Z. J. Wang

Au–LaNiO3 (Au–LNO) nanocomposite films with 3.84 at% Au were firstly fabricated by one-step chemical solution deposition (CSD), and their electrical properties were investigated.


2005 ◽  
Vol 902 ◽  
Author(s):  
Hiroshi Uchida ◽  
Shintaro Yasui ◽  
Risako Ueno ◽  
Hiroshi Nakaki ◽  
Ken Nishida ◽  
...  

AbstractIon modification for various perovskite-based ferroelectric thin films using rare-earth cations was attempted for improving the electrical properties. Strategy for controlling the electrical properties is mainly based on two concepts, that is, (i) substituting the volatile cations such as Pb2+ and Bi3+, and (ii) controlling the crystal anisotropy of perovskite unit cell. In this study, the influences of ion-modification conditions (i.e., amount, species and occupying site of substituent cations) on the electrical properties of perovskite-based ferroelectric films fabricated by a chemical solution deposition were investigated. Substituting volatile cations in simple-perovskite oxides, such Pb2+ in Pb(Zr,Ti)O3 and Bi3+ in BiFeO3, for the rare-earth cations like La3+ and Nd3+ reduced the leakage current density of these films due to suppressing the metal and / or oxygen vacancies, as well as in layered-perovskite oxides, such as Bi4Ti3O12 films [i.e., strategy (i)]. Also, crystal anisotropy of perovskite-based oxides could controlled by varying the species and the occupying site of substituent cations [i.e., strategy (ii)]; for example, the crystal anisotropy of Pb(Zr,Ti)O3 lattice was elongated by Ti- and Zr-site (B-site) substitution using rare-earth cations whose ionic radii locate on the smaller part of rare-earth series (such as Y3+, Dy3+), that resulted in enhancing the spontaneous polarization. We concluded that the strategy for controlling the electrical property mentioned in this study would be applicable for a various kind of perovskite-based ferroelectric films.


2004 ◽  
Vol 13 (1-3) ◽  
pp. 71-75
Author(s):  
Won-Jae Lee ◽  
Guoxia Liu ◽  
Byoung-Chul Shin ◽  
Geun-Hyoung Lee ◽  
Il-Soo Kim ◽  
...  

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