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

doi:10.1016/j.ssc.2009.12.018

Thermal conductivity and thermo-power of Y_{1 - x} Pr_x Ba₂ (Cu_{1 - x} M_x)₃ O_{7 - 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

Department of Physics, Manipal Institute of Technology, Manipal

Research output: Contribution to journal › Article › peer-review

4 Citations (SciVal)

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 _0.95Pr_0.5Ba₂(Cu_1-xM _x)₃O_7-δ(M=Fe,Mn,Zn and Ni). The XRD patterns confirm that all the samples are single phased. Pristine Y Ba₂Cu₃O_7-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 language	English
Pages (from-to)	454-457
Number of pages	4
Journal	Solid State Communications
Volume	150
Issue number	9-10
DOIs	https://doi.org/10.1016/j.ssc.2009.12.018
Publication status	Published - 01-03-2010

All Science Journal Classification (ASJC) codes

Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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

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.",

author = "Tirthankar Chakraborty and Bhasker Gahtori and Ahsan, {M. A.H.} and Geetha and Chen, {Y. S.} and Kuo, {Y. K.} and Ashok Rao and Sarkar, {Chandan Kumar} and Agrawal, {S. K.}",

year = "2010",

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doi = "10.1016/j.ssc.2009.12.018",

language = "English",

volume = "150",

pages = "454--457",

journal = "Solid State Communications",

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T1 - Thermal conductivity and thermo-power of Y1 - x Prx Ba2 (Cu1 - x Mx)3 O7 - δ (M = Fe,Mn,Zn and Ni) bulk superconductors

AU - Chakraborty, Tirthankar

AU - Gahtori, Bhasker

AU - Ahsan, M. A.H.

AU - Geetha,

AU - Chen, Y. S.

AU - Kuo, Y. K.

AU - Rao, Ashok

AU - Sarkar, Chandan Kumar

AU - Agrawal, S. K.

PY - 2010/3/1

Y1 - 2010/3/1

N2 - 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.

AB - 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.

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Thermal conductivity and thermo-power of Y_{1 - x} Pr_x Ba₂ (Cu_{1 - x} M_x)₃ O_{7 - δ} (M = Fe,Mn,Zn and Ni) bulk superconductors

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