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Epitaxial growth of YBa2Cu307−δ films on SrTiO3 (100) by direct solution precursor deposition

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, , Citation A Bustamante et al 2014 J. Phys.: Conf. Ser. 507 012005 DOI 10.1088/1742-6596/507/1/012005

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1 Laboratorio de Cerâmicos y Nafiomateriales. Facultad de Ciencias Fisicas, Universidad Nacional Mayor de San Marcos, Apartado Postal 14-0149, Lima 14, Peru

2 Facultad de Quimica e Ingenieria Quimica, Universidad Nacional Mayor de San Marcos, Peru

3 Cavendish Laboratory, Department of Physics, University of Cambridge, J.J. Thomson Av., Cambridge CB3 OHE, UK

4 Materials and Structures Laboratory Tokyo Institute of Technology, 4259 R3-5, Nagatsuta cho, Midori- ku, Yokohama 226-8503, Japan

5 Laboratório de Supercundutividade e Materiais Avançados, Departamento de Fisica Universidade Federal de Pernambuco 50670-901, Recife, Brazil

6 Grupo de Investigación de Superficies Intercaras y Lâminas Delgadas, Instituto de Ciencia de Materiales de Sevilla, CSIC, University Sevilla. Calle Americo Vespucio 49, Isla de la Cartuja.41092 Seville, Spain

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1742-6596/507/1/012005

Abstract

We study the optimal temperature to obtain YBa2Cu3O7-δ epitaxial films grown onto SrTiO3 substrates by direct solution deposition. The samples received heat treatment at 820, 840 and 860 °C, then characterized by XRD, observing the (00l) profiles; and magnetic susceptibility measurements. The TC-onset for all the samples was 90 K. In addition, the current – voltage (I-V) measurements shows typical tunneling signals corresponding to normal metal-superconducting junctions indicating the films are promising for potential electrical applications.

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10.1088/1742-6596/507/1/012005