Electrical and thermal transport properties of Dy0.95Pr 0.05Ba2(Cu1-x Mx)3O 7-δ with (M=Fe, Co, Ni and Zn) bulk superconductors

M. Geetha, Ashok Rao, M. Thukaram, S. K. Agarwal, Ramesh Chandra Bhatt, Kriti Tyagi, Y. K. Kuo

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Abstract

In the present communication, measurements of transition temperature, thermal conductivity, thermoelectric power and specific heat have been carried out on pristine and co-doped samples of Dy0.95Pr 0.05Ba2(Cu0.98 M0.02) 3O7-δ system [M=Fe, Co, Ni and Zn]. The electrical resistivity results show that all the samples exhibit metallic behavior. The thermal conductivity results illustrate that for pristine sample of DyBa 2Cu3O7-δ, the expected pronounced hump in thermal conductivity is seen below the transition temperature. The hump is suppressed with 5% Pr-doping and this is further suppressed with co-doping. The thermoelectric power measurements show that the pristine sample exhibits hole-like behavior and this continues for doped as well co-doped samples. Pristine sample shows the expected jump in specific heat and with Pr-doping a slope change is observed near the transition temperature.

Original languageEnglish
Pages (from-to)38-42
Number of pages5
JournalSolid State Communications
Volume187
DOIs
Publication statusPublished - 01-06-2014

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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