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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/12943

Title: Superconductivity and CuK-XANES of (Hg,Re)Sr2CuO4+delta
Authors: BALAMURUGAN, S
GOPALAKRISHNAN, IK
PRAKASH, O
PADALIA, BD
YAKHMI, JV
SELVAM, P
Keywords: mercury-based superconductor
neutron powder diffraction
high-pressure synthesis
single-step synthesis
x-ray-diffraction
t-c
oxide superconductors
crystal-structures
k superconductor
hgba2cuo4+delta
Issue Date: 2001
Publisher: WORLD SCIENTIFIC PUBL CO PTE LTD
Citation: MODERN PHYSICS LETTERS B, 15(9-10), 261-268
Abstract: The 1201-type nominal (Hg(0.9)Reo(0.1))Sr2CuO4+delta samples, synthesized at similar to 920 degreesC in partial vacuum, show, from temperature dependent dc-magnetization, T-c(onset) similar to 54 K. The CuK-edge features obtained from X-ray absorption measurements on the sample show predominantly Cu2+ state and a weak but distinct Cu1+ signature due to superconducting 1201 phase (after taking due account of impurity Sr2CuO3, and SrCuO2 phases). The presence of Cu1+ signature in SC samples is consistent with our earlier observations of Cu1+ in Ba-free superconducting (Hg,Cr)-1201 and (Hg,Mo)-1201 materials.
URI: http://dx.doi.org/10.1142/S0217984901001653
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12943
http://hdl.handle.net/10054/12943
ISSN: 0217-9849
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