Superconducting transition temperature of co-doped Y0.95Pr 0.05Ba2(Cu1-xMnx)3O 7-δ superconductors for x ≤0.02

Bhasker Gahtori, R. Lal, S. K. Agarwal, Anirban Das, Tirthankar Chakraborty, Ashok Rao

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)575-579
Number of pages5
JournalIndian Journal of Pure and Applied Physics
Volume46
Issue number8
Publication statusPublished - 01-08-2008

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transition temperature
magnetic permeability
electrical resistivity
grain size
degradation
scattering
electronics
temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Gahtori, Bhasker ; Lal, R. ; Agarwal, S. K. ; Das, Anirban ; Chakraborty, Tirthankar ; Rao, Ashok. / Superconducting transition temperature of co-doped Y0.95Pr 0.05Ba2(Cu1-xMnx)3O 7-δ superconductors for x ≤0.02. In: Indian Journal of Pure and Applied Physics. 2008 ; Vol. 46, No. 8. pp. 575-579.
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abstract = "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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Superconducting transition temperature of co-doped Y0.95Pr 0.05Ba2(Cu1-xMnx)3O 7-δ superconductors for x ≤0.02. / Gahtori, Bhasker; Lal, R.; Agarwal, S. K.; Das, Anirban; Chakraborty, Tirthankar; Rao, Ashok.

In: Indian Journal of Pure and Applied Physics, Vol. 46, No. 8, 01.08.2008, p. 575-579.

Research output: Contribution to journalArticle

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AU - Chakraborty, Tirthankar

AU - Rao, Ashok

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