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Effect of iron doping and oxygen stoichiometry on infrared absorption in Y1Ba2Cu3O7−δ
A K Sood K Sankaran Y Hariharan S Vijayalakshmi V Sankara Sastry S Kalavathi J Janaki
Condensed Matter Physics Volume 31 Issue 5 November 1988 pp 389-397
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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.
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Author Affiliations
A K Sood1 2 K Sankaran1 3 Y Hariharan1 S Vijayalakshmi1 3 V Sankara Sastry1 S Kalavathi1 J Janaki1
- Materials Science Laboratory, Indira Gandhi Centre for Atomic Research, Kalpakkam - 603 102, India
- Department of Physics, Indian Institute of Science, Bangalore - 560 012, India
- Radiochemistry Programme, Indira Gandhi Centre for Atomic Research, Kalpakkam - 603 102, India
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Dates
- Published
- November 1988
- Manuscript received
- 29 July 1988
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Pramana – Journal of Physics
Volume 97, 2023
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