### Abstract

Values of the superconducting transition temperature T_{c} extracted from the resistivity and ac susceptibility of Y_{0.95}Pr _{0.05}Ba_{2}(Cu_{1-x}Mn_{x})_{3}O _{7-δ} (x ≤0.02) are found to follow the same qualitative variation with the Mn content. Both lead, in particular, to lower T_{c} for the x=0.005 sample than those of the x=0.0, 0.0075 and 0.01 samples. Comparing T_{c} 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 T_{c} below x=0.02. Superconducting volume fraction f_{g} (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 T_{c} degradation in the x=0.005 sample.

Original language | English |
---|---|

Pages (from-to) | 575-579 |

Number of pages | 5 |

Journal | Indian Journal of Pure and Applied Physics |

Volume | 46 |

Issue number | 8 |

Publication status | Published - 01-08-2008 |

### Fingerprint

### All Science Journal Classification (ASJC) codes

- Physics and Astronomy (miscellaneous)

### Cite this

_{0.95}Pr

_{0.05}Ba

_{2}(Cu

_{1-x}Mn

_{x})

_{3}O

_{7-δ}superconductors for x ≤0.02.

*Indian Journal of Pure and Applied Physics*,

*46*(8), 575-579.

}

_{0.95}Pr

_{0.05}Ba

_{2}(Cu

_{1-x}Mn

_{x})

_{3}O

_{7-δ}superconductors for x ≤0.02',

*Indian Journal of Pure and Applied Physics*, vol. 46, no. 8, pp. 575-579.

**Superconducting transition temperature of co-doped Y _{0.95}Pr _{0.05}Ba_{2}(Cu_{1-x}Mn_{x})_{3}O _{7-δ} superconductors for x ≤0.02.** / Gahtori, Bhasker; Lal, R.; Agarwal, S. K.; Das, Anirban; Chakraborty, Tirthankar; Rao, Ashok.

Research output: Contribution to journal › Article

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.

UR - http://www.scopus.com/inward/record.url?scp=57149138167&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=57149138167&partnerID=8YFLogxK

M3 - Article

VL - 46

SP - 575

EP - 579

JO - Indian Journal of Pure and Applied Physics

JF - Indian Journal of Pure and Applied Physics

SN - 0019-5596

IS - 8

ER -

_{0.95}Pr

_{0.05}Ba

_{2}(Cu

_{1-x}Mn

_{x})

_{3}O

_{7-δ}superconductors for x ≤0.02. Indian Journal of Pure and Applied Physics. 2008 Aug 1;46(8):575-579.