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Title: Oxygen content and inhomogeneity effects on the electrical properties of YBa2Cu3Oy thin films
Author: Aguiar i Colom, Ruth
Sánchez Barrera, Florencio
Varela Fernández, Manuel, 1956-
Keywords: Oxigen
Propietats elèctriques
Pel·lícules fines
Electrical properties
Thin films
Issue Date: 1997
Publisher: Materials Research Society
Abstract: Oxygen content is a very important factor influencing the electrical properties of YBa2Cu3Oy. In this work the electrical properties of laser deposited YBa2Cu3Oy thin films on LaAlO3(100), in the whole range 6 y 7, are studied. An electrical network model, which randomly assigns oxygen contents and R(T) characteristics to the different elements in the circuit according to an arbitrary distribution, is used to analyze several features in the measured R(T) characteristics as a function of oxygen homogeneity. The model takes into account both short-range and long-range oxygen inhomogeneities. Good agreement between estimated oxygen contents from x-ray diffraction data in our samples and the average oxygen contents used to reproduce their R(T) characteristics is found. The model points out that oxygen homogeneity is very important in order to get the best and reproducible properties, and for conduction and superconductivity analysis through the shape or derivatives of R(T) characteristics.
Note: Reproducció del document publicat a:
It is part of: Journal of Materials Research, 1997, vol. 12, núm. 1, p. 47-53
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ISSN: 0884-2914
Appears in Collections:Articles publicats en revistes (Física Aplicada)

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