• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/031/05/0389-0397

    • Keywords

       

      YBCO; iron-doped YBCO; oxygen stoichiometry; superconductivity; infrared absorption

    • Abstract

       

      We report infrared absorption of Y1Ba2Cu3O7−δ as a function of oxygen stoichiometry (0<δ<1) and copper substitution by iron in the spectral range of 450–700 cm−1. The strong bands associated with Cu-O vibrations undergo significant changes in their frequencies and intensities asδ is varied across the orthorhombic to tetragonal phase. These changes coupled with those arising as a result of doping with iron has helped in identifying the nature of the vibrational modes.

    • Author Affiliations

       

      A K Sood1 2 K Sankaran1 3 Y Hariharan1 S Vijayalakshmi1 3 V Sankara Sastry1 S Kalavathi1 J Janaki1

      1. Materials Science Laboratory, Indira Gandhi Centre for Atomic Research, Kalpakkam - 603 102, India
      2. Department of Physics, Indian Institute of Science, Bangalore - 560 012, India
      3. Radiochemistry Programme, Indira Gandhi Centre for Atomic Research, Kalpakkam - 603 102, India
    • Dates

       
  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.