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Infrared properties of the oxygen-deficient triperovskite YBa2Cu3Oy compound
Affiliation:1. Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Universidad Autónoma de San Luís Potosí, Álvaro Obregón 64, San Luis Potosí, S.L.P. 78000, Mexico;2. Departamento de Ciencias Básicas, Instituto Tecnológico de San Luis Potosí, Soledad de Graciano Sánchez, 78437, Mexico;3. Center for Future Energy Systems, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY, 12180, United States;4. Instituto de Física. Universidad Autónoma de San Luís Potosí, Álvaro Obregón 64, San Luis Potosí, S.L.P. 78000, Mexico;1. School of Engineering, University of Edinburgh, Edinburgh EH9 3JL, United Kingdom;2. School of Engineering, University of Manchester, Manchester M1 3BB, United Kingdom;3. Engineering Department, University of Cambridge, Cambridge CB3 0FA, United Kingdom;4. Institute for Technical Physics, Karlsruhe Institute of Technology, Karlsruhe 76131, Germany;1. Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway;2. Apronex s.r.o., Nad Safinou II/365, Vestec, 252 42 Jesenice u Prahy, Czech Republic;3. PT Biotech Surindo, Komp. Pelabuhan Perikanan Kejawanan Jl. Pelabuhan Perikanan No. 1, Cirebon, West Java 45113, Indonesia;4. Center for Bioprocess Engineering, Department of Chemical and Biochemical Engineering, Technical University of Denmark, Building 229, DK-2800 Kgs Lyngby, Denmark;1. Department of Disaster Mitigation for Structures, Tongji University, 1239 Siping Road, Shanghai, China;2. School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, China;1. Department of Physics, Georgetown University, Washington, DC, 20057, USA;2. U.S. Naval Research Laboratory, Washington, DC, 20375, USA;3. Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD, 20742, USA
Abstract:Infrared absorption spectra have been evaluated for the YBa2Cu3Oy compound samples prepared after rapid cooling from various temperatures in order to maintain the composition existing at the quench temperature. The absorption spectra for the samples with tetragonal symmetry and the reflection spectra for the samples with the orthorhombic symmetry have been determined. The superconducting energy gap was evaluated for a orthorhombic sample.
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