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

11th European Conference on Applied Superconductivity

Bustamante, A.^1 ; Osorio, Ana M^2 ; Valladares, Luis De Los Santos^3,4,5 ; Garcia, Jorge^1 ; González, J.C.^6 ; Barnes, C.H.W.^3 ; Azuma, Y.^4 ; Majima, Y.^4 ; Aguiar, J Albino^5

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

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

Cavendish Laboratory, Department of Physics, University of Cambridge, J.J. Thomson Av., Cambridge

CB3 OHE, United Kingdom^3

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

226-8503, Japan^4

Laboratório de Supercundutividade e Materiais Avançados, Departamento de Fisica, Universidade Federal de Pernambuco, Recife

50670-901, Brazil^5

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, Seville

41092, Spain^6

关键词: Current-voltage measurements;    Direct solution;    Electrical applications;    Magnetic susceptibility measurements;    Normal metals;    Optimal temperature;    SrTiO3 substrates;    Superconducting junctions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/1/012005/pdf
DOI  :  10.1088/1742-6596/507/1/012005

来源: IOP

【 摘 要 】

We study the optimal temperature to obtain YBa2Cu3O7-δepitaxial films grown onto SrTiO3substrates 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-onsetfor 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.