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Improvement of superconducting properties in Fe1+xSe0.5Te0.5 superconductor by Cr-substitution

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Title Improvement of superconducting properties in Fe1+xSe0.5Te0.5 superconductor by Cr-substitution
 
Creator YADAV, AK
SANCHELA, AV
TOMY, CV
 
Subject TEMPERATURE
FESE
Iron chalcogenide
Substitution
Thermopower
Strong correlation
 
Description Enhancement of superconducting transition temperature (T-c) of parent superconductor, Fe1+xSe, of 'Fe-11' family by Cr-substitution for excess Fe has been motivated us to investigate the effect of Cr-substitution in optimal superconductor or Fe1+xSe0.5Te0.5 at Fe site. Here, we report structural, magnetic, electrical transport, thermal transport and heat capacity properties or Cr-substitute compounds. x-ray diffraction measurement confirms the substitution of Cr-atoms in host lattice. Magnetic and electrical transport measurements are used to explore the superconducting properties where Cr-substituted compounds show improvement in superconducting diamagnetic fraction with same T-c as undoped one Heat capacity measurement confirms the bulk superconducting properties of compounds. Thermopower measurement characterizes the type of charge carriers in normal state. (C) 2015 Elsevier Ltd. All rights reserved.
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2016-01-15T05:44:56Z
2016-01-15T05:44:56Z
2015
 
Type Article
 
Identifier SOLID STATE COMMUNICATIONS, 206,26-30
0038-1098
1879-2766
http://dx.doi.org/10.1016/j.ssc.2015.01.009
http://dspace.library.iitb.ac.in/jspui/handle/100/17847
 
Language en