Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/9565
Title: Fe content variation and superconducting order parameter dimensionality in ErBa<sub>2</sub>Cu<sub>3-x</sub>Fe<sub>x</sub>O<sub>7-</sub><sub><img src='/image/spc_char/delta1.gif' border=0></sub>
Authors: Upreti, U C
Keywords: ErBa<sub>2</sub>Cu<sub>3-x</sub>Fe<sub>x</sub>O<sub>7-</sub><sub><img src='/image/spc_char/delta1.gif' border=0></sub><sub> </sub> Superconducting order parameter High <i style="">T</i>c superconductors
Issue Date: Jan-2004
Publisher: CSIR
Abstract: The effects of predominantly chain-site dopant, Fe, concen­tration variation on superconducting order parameter fluctuations(SCOPF) in ErBa<sub>2</sub>Cu<sub>3-x</sub>Fe<sub> x</sub>O<sub>7-</sub><sub><img src='/image/spc_char/delta1.gif' border=0></sub> polycrystalline bulk samples are presented and compared. A large reduction in OPD near the dynamic critical region is seen, suggesting an anomalous crossover and indicating a much slower suppression of superconductivity. Near to T<sub>c</sub> the SCOPF behaviour suggests Cu-O network cou­pling deterioration. It is also observed that the SCOPF are invariant to Fe low concentrations and with Fe concentration increase these show marked dimensionality variation and increased oxygen content dependence. Higher Fe concentration is seen to promote a dimensionality reversal.
Description: 38-42
URI: http://hdl.handle.net/123456789/9565
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.42(01) [January 2004]

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