TY - JOUR
T1 - Superconducting transition temperature of co-doped Y0.95Pr 0.05Ba2(Cu1-xMnx)3O 7-δ superconductors for x ≤0.02
AU - Gahtori, Bhasker
AU - Lal, R.
AU - Agarwal, S. K.
AU - Das, Anirban
AU - Chakraborty, Tirthankar
AU - Rao, Ashok
PY - 2008/8/1
Y1 - 2008/8/1
N2 - Values of the superconducting transition temperature Tc extracted from the resistivity and ac susceptibility of Y0.95Pr 0.05Ba2(Cu1-xMnx)3O 7-δ (x ≤0.02) are found to follow the same qualitative variation with the Mn content. Both lead, in particular, to lower Tc for the x=0.005 sample than those of the x=0.0, 0.0075 and 0.01 samples. Comparing Tc with difference of resistivities with and without Pr for various x, it has been argued that electronic effects-dominate over the potential scattering in suppressing Tc below x=0.02. Superconducting volume fraction fg (as deduced through imaginary part χ′ of the ac susceptibility at the peak temperature) when considered in conjunction with the average grain size for the x=0.005 sample, indicates that the smaller size of the grains in x=0.005 sample leads to stronger fluctuations. This is an additional source for the larger Tc degradation in the x=0.005 sample.
AB - Values of the superconducting transition temperature Tc extracted from the resistivity and ac susceptibility of Y0.95Pr 0.05Ba2(Cu1-xMnx)3O 7-δ (x ≤0.02) are found to follow the same qualitative variation with the Mn content. Both lead, in particular, to lower Tc for the x=0.005 sample than those of the x=0.0, 0.0075 and 0.01 samples. Comparing Tc with difference of resistivities with and without Pr for various x, it has been argued that electronic effects-dominate over the potential scattering in suppressing Tc below x=0.02. Superconducting volume fraction fg (as deduced through imaginary part χ′ of the ac susceptibility at the peak temperature) when considered in conjunction with the average grain size for the x=0.005 sample, indicates that the smaller size of the grains in x=0.005 sample leads to stronger fluctuations. This is an additional source for the larger Tc degradation in the x=0.005 sample.
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M3 - Article
AN - SCOPUS:57149138167
SN - 0019-5596
VL - 46
SP - 575
EP - 579
JO - Indian Journal of Pure and Applied Physics
JF - Indian Journal of Pure and Applied Physics
IS - 8
ER -