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Type: Artigo de periódico
Title: Superconducting Yba2cu3o7-δ Films On Srtio3 By Electrodeposition Process
Author: Machado A.J.S.
Moehlecke S.
Kopelevich Y.
Robin A.
Dos Santos C.A.M.
Abstract: An ac electrodeposition (ED) process to obtain good quality YBa2Cu3O7-δ (YBCO) high-temperature superconductor (HTS) films was developed. These films were deposited on SrTiO3 (100) single crystal substrates previously coated with a thin silver layer (800 angstrom) that was deposited by chemical reduction. A small amount of Ag (0.7% in weight) added to the electrolyte bath was shown to improve the quality of the deposited films. YBCO films after an appropriate heat treatment present single phase material with an onset Tc approx. 90 K, ΔTc approx. 2 K, homogeneous grain morphology and strong biaxial texture. Transport measurements show a metallic behavior in the normal state and a self-field critical current densities approx. 105 A/cm2 at 4.2 K and approx. 104 A/cm2 at 77K.
Editor: Elsevier Science Publishers B.V., Amsterdam, Netherlands
Rights: fechado
Identifier DOI: 10.1016/S0921-4534(00)01261-2
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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