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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/12283

Title: The valence state of M-ions in the chemically stabilized YSr(2)Cu(3-x)M(x)O(7+delta) (M=Mo, W and Re) superconductors
Authors: MURUGESAN, M
SELVAM, P
SHARON, M
GUPTA, LC
PINTO, R
GOPINATH, CS
SUBRAMANIAN, S
Keywords: ray photoelectron-spectroscopy
high-pressure
y1-xprxsr2cu2.7mo0.3o7-delta
oxide
Issue Date: 1997
Publisher: SPRINGER VERLAG
Citation: APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 64(2), 177-179
Abstract: Single phase Ba- free Sr-based YSr(2)Cu(3-x)M(x)O(7+delta) (M = Mo, W and Re) compounds have been stabilized by chemical doping. Superconductivity is observed for these phases in the range 30-45K. X-ray diffraction studies suggest a relatively small orthorhombicity compared to Ba-analogue. X-ray photoelectron spectroscopic investigations reveal that the stabilizing cations are in the hexavalent state. The observation of the higher oxidation state of M-ions accounts for the excess oxygen content in these phases which is in accordence with the diffraction results.
URI: http://dx.doi.org/10.1007/s003390050461
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12283
http://hdl.handle.net/10054/12283
ISSN: 0947-8396
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