Orientation Behavior of REBa2Cu3O7-y(RE=Rare Earth and Y) Films Prepared by Chemical Solution Deposition

2000 ◽  
Vol 39 (Part 1, No. 2A) ◽  
pp. 452-457 ◽  
Author(s):  
Katsuya Yamagiwa ◽  
Izumi Hirabayashi
Keyword(s):  
Rare Earth ◽  
Chemical Solution Deposition ◽  
Chemical Solution ◽  
Orientation Behavior ◽  
Solution Deposition

Deposition of rare earth tantalate buffers on textured Ni-W substrates for YBCO coated conductor using chemical solution deposition approach

2006 ◽  
Vol 21 (3) ◽  
pp. 767-773 ◽  
Author(s):  
M.S. Bhuiyan ◽  
M. Paranthaman ◽  
A. Goyal ◽  
L. Heatherly ◽  
D.B. Beach
Keyword(s):  
Rare Earth ◽  
Chemical Solution Deposition ◽  
Precursor Solution ◽  
Coated Conductors ◽  
Buffer Layers ◽  
Chemical Solution ◽  
Solution Deposition ◽  
Force Microscopy ◽  
Atomic Force ◽  
Ybco Coated Conductors

Epitaxial films of rare-earth (RE = La, Ce, Eu, and Gd) tantalates, RE3TaO7 with pyrochlore structures were grown on biaxially textured nickel-3 at.% tungsten (Ni-W) substrates using chemical solution deposition (CSD) process. Precursor solution of 0.3∼0.4 M concentration of total cations were spin coated on to short samples of Ni-W substrates and the films were crystallized at 1050∼1100 °C in a gas mixture of Ar- 4% H2 for 15 to 60 min. X-ray studies show that the films of pyrochlore RE tantalate films are highly textured with cube-on-cube epitaxy. Improved texture was observed in case of lanthanum tantalate (La3TaO7) film grown on Ni-W substrates. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) investigations of RE3TaO7 films reveal a fairly dense and smooth microstructure without cracks and porosity. The rare-earth tantalate layers may be potentially used as buffer layers for YBa2Cu3O7-δ (YBCO) coated conductors.

Epitaxial Growth of Solution-Based Rare-Earth Niobate, RE3NbO7, Films on Biaxially Textured Ni–W Substrates

2005 ◽  
Vol 20 (1) ◽  
pp. 6-9 ◽  
Author(s):  
M. Paranthaman ◽  
M.S. Bhuiyan ◽  
S. Sathyamurthy ◽  
H.Y. Zhai ◽  
A. Goyal ◽  
...  
Keyword(s):  
Rare Earth ◽  
Critical Current Density ◽  
Epitaxial Growth ◽  
Chemical Solution Deposition ◽  
Ybco Film ◽  
Pulsed Laser ◽  
Buffer Layers ◽  
Laser Deposition ◽  
Chemical Solution ◽  
Solution Deposition

A new series of rare earth-niobate, RE3NbO7 (RE=Y,Gd,Eu), buffer layers were developed for the growth of superconducting YBa2Cu3O7−δ (YBCO) films on biaxially textured Ni–W (3 at.%) substrates. Using chemical solution deposition, smooth, crack-free, and epitaxial RE3NbO7 (RE = Y,Gd,Eu) films were grown on cube-textured Ni–W substrate. YBCO film with a critical current density of 1.1 × 106 A/cm2 in self-field at 77 K was grown directly on a single Gd3NbO7-buffered Ni–W substrate using pulsed laser deposition.

Characterization of the Interface Between Lanthanum Hexa-Aluminate and Sapphire by Exit Wave Reconstruction

1999 ◽  
Vol 589 ◽  
Author(s):  
B. Wessler ◽  
A. Steinecker ◽  
W. Mader
Keyword(s):  
Thin Films ◽  
Rare Earth ◽  
Chemical Solution Deposition ◽  
Epitaxial Thin Films ◽  
Chemical Solution ◽  
Solution Deposition ◽  
Coordination Polyhedra ◽  
Cation Layer ◽  
Different Types

AbstractEpitaxial thin films of rare-earth hexaaluminates on basal plane sapphire have been produced by chemical solution deposition. LaAl11O18 films with magnetoplumbite structure grow with (0001)HA||(0001)S and [1100]HA||[2110]s orientation relationshipTo investigate the stucture of the interface exit wave reconstruction of focus series was carried out using a field emission TEM. Due to the inversion of the imaging process major artefacts at the interface can be eliminated. Exit waves were simulated based on different interface models and were compared with the reconstructed waves to localize the positions of the atoms at the interface. Two different types of interfaces were observed in the samples. One of the types, in which the spinel block of hexaaluminate faces the sapphire with the mixed cation layer with occupied octahedra and tetrahedra, is characterized in detail. Face-sharing of coordination polyhedra is avoided to large extent

Ion Modification for Improvement of Electrical Properties of Perovskite-based Ferroelectric Thin Films Fabricated by Chemical Solution Deposition Method

2005 ◽  
Vol 902 ◽  
Author(s):  
Hiroshi Uchida ◽  
Shintaro Yasui ◽  
Risako Ueno ◽  
Hiroshi Nakaki ◽  
Ken Nishida ◽  
...  
Keyword(s):  
Thin Films ◽  
Rare Earth ◽  
Electrical Properties ◽  
Chemical Solution Deposition ◽  
Perovskite Oxides ◽  
Ferroelectric Thin Films ◽  
Chemical Solution ◽  
Ferroelectric Films ◽  
Solution Deposition ◽  
Crystal Anisotropy

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.

scholarly journals RE BCO mixtures with large difference in rare-earth ion size: superconducting properties of chemical solution deposition-grown Yb 1− x Sm x Ba 2 Cu 3 O 7− δ films

2020 ◽  
Vol 7 (11) ◽  
pp. 201257
Author(s):  
Pablo Cayado ◽  
Minjuan Li ◽  
Manuela Erbe ◽  
Zhiyong Liu ◽  
Chuanbing Cai ◽  
...  
Keyword(s):  
Rare Earth ◽  
Chemical Solution Deposition ◽  
Fluorine Content ◽  
Chemical Solution ◽  
Superconducting Properties ◽  
Rare Earth Ion ◽  
Solution Deposition ◽  
Mixed Films ◽  
The One ◽  
Ion Size

The main objective of this work was to study the superconducting properties of RE BCO films with a mixture of rare-earth ( RE ) ions with large difference in ion size, in particular Sm 3+ and Yb 3+ . These Yb 1− x Sm x Ba 2 Cu 3 O 7− δ films have been successfully prepared for the first time by chemical solution deposition following the extremely low-fluorine route, which allows reducing the fluorine content by 93% with respect to standard full trifluoroacetate solutions. On the one hand, critical temperature T c remains stable at approximately 90 K with Sm content up to x = 0.5 where T c starts to increase towards the values of pure SmBCO films of approximately 95 K. On the other hand, the critical current densities J c of the pure SmBCO films are the largest at 77 K, where the influence of a higher T c is very relevant, while at lower temperatures and low fields, the mixed films reach larger values. This demonstrates that mixing rare-earth elements RE in RE Ba 2 Cu 3 O 7− δ causes a change in the pinning properties of the films and reveals the importance of selecting adequate RE BCO compounds according to the temperature and magnetic field region of a desired application.

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 ◽  
...  
Keyword(s):  
Rare Earth ◽  
Electrical Properties ◽  
Transport Properties ◽  
Chemical Solution Deposition ◽  
Growth Conditions ◽  
Nanocomposite Films ◽  
Chemical Solution ◽  
Solution Deposition ◽  
Structure Morphology ◽  
The Rare Earth

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.

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