Mössbauer study of Fe-substituted orthorhombic and tetragonal YBa2(Cu1-xFex)3O7-σ system |
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| Authors: | S N Shringi O M Prakash R V Vadnere S Prasad N Sharma |
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| Affiliation: | (1) Department of Physics, Indian Institute of Technology, 400 076 Bombay, India;(2) Materials Science Centre, Indian Institute of Technology, 400 076 Bombay, India |
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| Abstract: | Mössbauer study of orthorhombic and tetragonal YBa2(Cu1-xFex)3O7-σ;x=0.02, 0.04, 0.08 has been done to investigate the two inequivalent Cu-sites. Fe substituting Cu having pyramidal oxygen co-ordination is in Fe3+ state while Fe substituting Cu having square planar co-ordination is in Fe3+ and Fe4+ states in dynamic equilibrium. |
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| Keywords: | M?ssbauer effect high temperature superconductivity YBa2Cu3O7-σ |
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