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Enhanced superconducting properties in FeCr(x)Se

DSpace at IIT Bombay

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Title Enhanced superconducting properties in FeCr(x)Se
 
Creator YADAV, AK
THAKUR, AD
TOMY, CV
 
Subject PHASE-DIAGRAM
FESE
TEMPERATURE
PRESSURE
Superconductivity
X-ray diffraction
Magnetization
Transport
 
Description 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.
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2012-06-26T08:33:09Z
2012-06-26T08:33:09Z
2011
 
Type Article
 
Identifier SOLID STATE COMMUNICATIONS,151(7)557-560
0038-1098
http://dx.doi.org/10.1016/j.ssc.2011.01.010
http://dspace.library.iitb.ac.in/jspui/handle/100/14191
 
Language English