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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/14191

Title: Enhanced superconducting properties in FeCr(x)Se
Authors: YADAV, AK
THAKUR, AD
TOMY, CV
Keywords: PHASE-DIAGRAM
FESE
TEMPERATURE
PRESSURE
Issue Date: 2011
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Citation: SOLID STATE COMMUNICATIONS,151(7)557-560
Abstract: We report an enhancement of the superconducting transition temperature (T(c)) when chromium (Cr) is substituted in excess at the iron (Fe) site (FeCr(x)Se, x = 0.01, 0.02 and 0.03). There is a corresponding increase in the superconducting volume fraction with T(c) attaining a value of 11.2 K on 2% Cr substitution when compared to a T(c) of 8.5 K for the conventional tetragonal Fe-excess sample Fe(1+x)Se. The results point to the role of chemical pressure (introduced via ionic size variation at the Fe site upon Cr substitution in excess) on superconducting properties. (C) 2011 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.ssc.2011.01.010
http://dspace.library.iitb.ac.in/jspui/handle/100/14191
ISSN: 0038-1098
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