Thermal conductivity and thermo-power of Y1 - x Prx Ba2 (Cu1 - x Mx)3 O7 - δ (M = Fe,Mn,Zn and Ni) bulk superconductors

Tirthankar Chakraborty, Bhasker Gahtori, M. A.H. Ahsan, Geetha, Y. S. Chen, Y. K. Kuo, Ashok Rao, Chandan Kumar Sarkar, S. K. Agrawal

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Abstract

In this paper, we present temperature dependent electrical conductivity ρ (T), thermal conductivity κ (T) and thermoelectric power S (T) for co-doped superconducting compounds Y 0.95Pr0.5Ba2(Cu1-xM x)3O7-δ(M=Fe,Mn,Zn and Ni). The XRD patterns confirm that all the samples are single phased. Pristine Y Ba2Cu3O7-δ depicts a pronounced hump-like structure in κ (T) below its transition temperature. With Pr-doping, a reduction in the peak height of the hump is observed. It is found that the hump structure is further suppressed with transition metal co-doping, and is viewed in terms of the phonon scattering with defect structure, electrons and phonons. S (T) data depicting a sign reversal with co-doping, has been analyzed in the framework of a narrow band model.

Original languageEnglish
Pages (from-to)454-457
Number of pages4
JournalSolid State Communications
Volume150
Issue number9-10
DOIs
Publication statusPublished - 01-03-2010

All Science Journal Classification (ASJC) codes

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

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    Chakraborty, T., Gahtori, B., Ahsan, M. A. H., Geetha, Chen, Y. S., Kuo, Y. K., Rao, A., Sarkar, C. K., & Agrawal, S. K. (2010). Thermal conductivity and thermo-power of Y1 - x Prx Ba2 (Cu1 - x Mx)3 O7 - δ (M = Fe,Mn,Zn and Ni) bulk superconductors. Solid State Communications, 150(9-10), 454-457. https://doi.org/10.1016/j.ssc.2009.12.018