scholarly journals BPSCCO Superconducting Films Grown by Spray Pyrolysis Technique: Systematic Study of the Relationship between Pb Content and Annealing Conditions

2012 ◽  
Vol 02 (04) ◽  
pp. 92-95
Author(s):  
Y Elvia Díaz Valdés ◽  
Concepción Mejía García ◽  
Ana María Paniagua Mercado ◽  
Arturo Méndez Sánchez
Keyword(s):  
Spray Pyrolysis ◽  
Systematic Study ◽  
Spray Pyrolysis Technique ◽  
Superconducting Films ◽  
Annealing Conditions ◽  
The Relationship

Preparation of TI-Ba-Ca-Cu Superconducting Oxide Films by Spray Pyrolysis Technique

1991 ◽  
Vol 226 ◽  
Author(s):  
H.S. Koo ◽  
T.L. Kuo ◽  
D.H. Kuo ◽  
R.J. Lin ◽  
W.H. Lee ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Spray Pyrolysis ◽  
Room Temperature ◽  
Spray Pyrolysis Technique ◽  
Superconducting Films ◽  
X Ray Diffraction ◽  
X Ray ◽  
Zero Resistance ◽  
Scanning Electron

AbstractSuperconducting TI-Ba-Ca-Cu-O(TBCCO) films with zero resistance temperatures above 100K have been prepared on (001)MgO single-crystal substrates by the combination techniques of spray pyrolysis and Tl-diffusion. The as-sprayed Ba-Ca-Cu-O films and the sintered TBCCO superconducting bulks were wrapped in Au foil and heated in oxygen at temperatures ranging from 890 to 920°C and cooled to room temperature by furnace cooling. Highly c-axis oriented superconducting films were obtained and their average thicknesses were about 5-10 μm. The characteristics of TBCCO films by X-ray diffraction, scanning electron microscopy and electrical property are discussed.

Spray Pyrolysis Technique for the Deposition of Superconducting Films

1989 ◽  
Vol 169 ◽  
Author(s):  
Marc Soller ◽  
Larry P. Moy ◽  
Michael R. Squillante ◽  
James Marzik
Keyword(s):  
Spray Pyrolysis ◽  
Spray Pyrolysis Technique ◽  
Superconducting Films ◽  
304 Stainless Steel ◽  
Chemical Spray Pyrolysis ◽  
Substrate Type ◽  
Polycrystalline Alumina ◽  
Chemical Spray ◽  
Type 304 ◽  
Type 304 Stainless Steel

AbstractResearch has been performed on the use of chemical spray pyrolysis for depositing films of YBCO. The effects of reagent concentration, deposition rate, substrate temperature and substrate type were investigated. Films from less than 2 to more than 10 microns thick were deposited on single crystal strontium titanate, polycrystalline alumina and type 304 stainless steel.

GROWTH OF ORIENTED SUPERCONDUCTING FILMS OF Bi–Sr–Ca–Cu–O BY SPRAY PYROLYSIS TECHNIQUE

1990 ◽  
Vol 04 (06) ◽  
pp. 393-397 ◽  
Author(s):  
D. K. WALIA ◽  
A. K. GUPTA ◽  
G. S. N. REDDY ◽  
N. D. KATARIA ◽  
NEERAJ KHARE ◽  
...  
Keyword(s):  
Spray Pyrolysis ◽  
Spray Pyrolysis Technique ◽  
Low Cost ◽  
Superconducting Films ◽  
Atomic Ratio ◽  
Transport Critical Current Density ◽  
Zero Field ◽  
Superconducting Transition ◽  
Superconducting Thick Films ◽  
Zero Resistance

Highly oriented superconducting thick films of Bi 2 Sr 2 CaCu 2 O 8+x have been prepared by low cost spray pyrolysis technique. Aqueous solution containing nitrates of Bi, Sr, Ca, and Cu in the atomic ratio of 2:2:1:2 is sprayed on MgO (100) substrates which are kept at elevated temperature. After annealing in air near the melting temperature, highly oriented films with c-axis perpendicular to the substrate are obtained. The films show a sharp superconducting transition with zero resistance at 85 K. The transport critical current density of the film at 77 K and zero field is of the order of 4000 A/cm 2.

Growth of TlBa2Ca2Cu3O9−y superconducting films with local biaxial alignment extending up to 5 mm on Ag substrates using a spray-pyrolysis technique

1997 ◽  
Vol 12 (3) ◽  
pp. 619-623 ◽  
Author(s):  
M. Paranthaman ◽  
F. A. List ◽  
A. Goyal ◽  
E. D. Specht ◽  
C. E. Vallet ◽  
...  
Keyword(s):  
Spray Pyrolysis ◽  
Spray Pyrolysis Technique ◽  
Superconducting Films ◽  
Growth Behavior ◽  
Zero Field ◽  
Superconducting Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Current Densities ◽  
Biaxial Alignment

We report on the superconducting properties of TlBa2Ca2Cu3O9−y (Tl-1223) thick films grown on smooth and rough Ag substrates. Thallium-free precursor films of the type Ba2Ca2Cu3Ag0.37O7 were deposited on Ag substrates using a spray-pyrolysis technique followed by post-thallination in a two-zone furnace. X-ray diffraction (XRD) results showed the presence of c-axis aligned Tl-1223 films and some degree of local in-plane texture (often referred to as a colony microstructure). The microstructure of the Ag surface dictates the growth behavior of Tl-1223 films. The transport critical-current densities (Jc) for Tl-1223 films grown on smooth and rough Ag substrates were ∼ 65,000 A/cm2 and ˜ 37,000 A/cm2, respectively, at 77 K and zero field. The films grown on smooth Ag substrates were strongly linked and had good in-field properties with a Jc value of ∼104 A/cm2 at 77 K and 0.5 T.

Preparation of TI-1223 and TI-2223 superconducting films by spray pyrolysis

2001 ◽  
Vol 11 (PR11) ◽  
pp. Pr11-157-Pr11-161 ◽  
Author(s):  
S. Phok ◽  
Z. I. Supardi ◽  
A. Sin ◽  
Ph. Galez ◽  
J. L. Jorda ◽  
...  
Keyword(s):  
Spray Pyrolysis ◽  
Superconducting Films

scholarly journals Strong texture tuning along different crystalline directions in glass-supported CeO2 thin films by ultrasonic spray pyrolysis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Inti Zumeta-Dubé ◽  
José Manuel García Rangel ◽  
Jorge Roque ◽  
Issis Claudette Romero-Ibarra ◽  
Mario Fidel García Sánchez
Keyword(s):  
Thin Films ◽  
Spray Pyrolysis ◽  
Spray Pyrolysis Technique ◽  
Morphological Characteristics ◽  
Ultrasonic Spray Pyrolysis ◽  
Cost Effective ◽  
Growth Direction ◽  
Large Area ◽  
Smart Windows ◽  
Ultrasonic Spray

AbstractThe strong facet-dependent performance of glass-supported CeO2 thin films in different applications (catalysis, smart windows, etc.) has been the target of diverse fundamental and technological approaches. However, the design of accurate, cost-effective and scalable methods with the potential for large-area coverage that produce highly textured glass-supported CeO2 thin films remains a technological challenge. In the present work, it is demonstrated that under proper tuning conditions, the ultrasonic spray pyrolysis technique enables one to obtain glass-supported polycrystalline CeO2 films with noticeable texture along both the (100) and (111) directions, as well as with randomly oriented crystallites (no texture). The influence of flow rates, solution molarity, and substrate temperature on the texture and morphological characteristics, as well as optical absorption and Raman response of the deposited films, is evaluated. The obtained results are discussed on the basis of the combined dependence of the CeO2-exposed surfaces on the thermodynamic stability of the corresponding facets and the reaction kinetics, which modulate the crystallite growth direction.

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