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

^*Corresponding author for this work

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

4 Citations (Scopus)

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

General Chemistry
Condensed Matter Physics
Materials Chemistry

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10.1016/j.ssc.2009.12.018

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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",

month = mar,

day = "1",

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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DO - 10.1016/j.ssc.2009.12.018

M3 - Article

AN - SCOPUS:75949131158

SN - 0038-1098

VL - 150

SP - 454

EP - 457

JO - Solid State Communications

JF - Solid State Communications

IS - 9-10

ER -

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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