Electrical and thermal properties of bulk superconductors Eu0.95Pr0.05Ba2(Cu1-xMx)3O7-δ (M = Fe, Ni, Zn and Mn)

Tirthankar Chakraborty, Bhasker Gahtori, Ajay Soni, G. S. Okram, S. K. Agarwal, Y. S. Chen, Y. K. Kuo, Geetha, Ashok Rao, Chandan Kumar Sarkar

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Measurements of transition temperature, magneto-resistance, thermal conductivity, thermo-electric power and specific heat have been carried out on co-doped samples of Eu0.95Pr0.05Ba2(Cu1-xMx)3O7-δ (M = Fe, Ni, Zn and Mn) compounds. It is found that all samples exhibit metallic behavior, except the co-doped sample of Fe that shows semiconducting behavior. It is seen that the upper-critical field Hc2 decreases with Pr-doping. However, an increase in Hc2 for dopants like Fe and Mn is observed. Thermal conductivity for the pristine sample of EuBa2Cu3O7-δ (Eu-123) exhibits a pronounced hump below the superconducting transition temperature TC. However, the peak height of the hump decreases with Pr-doping and such a feature is further suppressed in the co-doped samples. The negative sign of the measured thermo-electric power of Eu-123 indicates that the dominant carrier in this sample is electron-like, whereas it turns to hole-like for all of the doped samples. A jump in specific heat CP is detected in the pure sample of Eu-123 at TC, while only a change in slope in CP is seen around the transition temperature in the Pr-doped sample.

Original languageEnglish
Pages (from-to)244-249
Number of pages6
JournalPhysica C: Superconductivity and its Applications
Volume470
Issue number3
DOIs
Publication statusPublished - 01-02-2010

Fingerprint

Superconducting materials
Superconducting transition temperature
Electric properties
Thermodynamic properties
thermodynamic properties
electrical properties
Thermoelectric power
Doping (additives)
Specific heat
Thermal conductivity
Magnetoresistance
transition temperature
electric power
Electrons
thermal conductivity
specific heat
slopes
heat

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Electronic, Optical and Magnetic Materials

Cite this

Chakraborty, Tirthankar ; Gahtori, Bhasker ; Soni, Ajay ; Okram, G. S. ; Agarwal, S. K. ; Chen, Y. S. ; Kuo, Y. K. ; Geetha, ; Rao, Ashok ; Sarkar, Chandan Kumar. / Electrical and thermal properties of bulk superconductors Eu0.95Pr0.05Ba2(Cu1-xMx)3O7-δ (M = Fe, Ni, Zn and Mn). In: Physica C: Superconductivity and its Applications. 2010 ; Vol. 470, No. 3. pp. 244-249.
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abstract = "Measurements of transition temperature, magneto-resistance, thermal conductivity, thermo-electric power and specific heat have been carried out on co-doped samples of Eu0.95Pr0.05Ba2(Cu1-xMx)3O7-δ (M = Fe, Ni, Zn and Mn) compounds. It is found that all samples exhibit metallic behavior, except the co-doped sample of Fe that shows semiconducting behavior. It is seen that the upper-critical field Hc2 decreases with Pr-doping. However, an increase in Hc2 for dopants like Fe and Mn is observed. Thermal conductivity for the pristine sample of EuBa2Cu3O7-δ (Eu-123) exhibits a pronounced hump below the superconducting transition temperature TC. However, the peak height of the hump decreases with Pr-doping and such a feature is further suppressed in the co-doped samples. The negative sign of the measured thermo-electric power of Eu-123 indicates that the dominant carrier in this sample is electron-like, whereas it turns to hole-like for all of the doped samples. A jump in specific heat CP is detected in the pure sample of Eu-123 at TC, while only a change in slope in CP is seen around the transition temperature in the Pr-doped sample.",
author = "Tirthankar Chakraborty and Bhasker Gahtori and Ajay Soni and Okram, {G. S.} and Agarwal, {S. K.} and Chen, {Y. S.} and Kuo, {Y. K.} and Geetha and Ashok Rao and Sarkar, {Chandan Kumar}",
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Chakraborty, T, Gahtori, B, Soni, A, Okram, GS, Agarwal, SK, Chen, YS, Kuo, YK, Geetha, , Rao, A & Sarkar, CK 2010, 'Electrical and thermal properties of bulk superconductors Eu0.95Pr0.05Ba2(Cu1-xMx)3O7-δ (M = Fe, Ni, Zn and Mn)', Physica C: Superconductivity and its Applications, vol. 470, no. 3, pp. 244-249. https://doi.org/10.1016/j.physc.2010.01.011

Electrical and thermal properties of bulk superconductors Eu0.95Pr0.05Ba2(Cu1-xMx)3O7-δ (M = Fe, Ni, Zn and Mn). / Chakraborty, Tirthankar; Gahtori, Bhasker; Soni, Ajay; Okram, G. S.; Agarwal, S. K.; Chen, Y. S.; Kuo, Y. K.; Geetha, ; Rao, Ashok; Sarkar, Chandan Kumar.

In: Physica C: Superconductivity and its Applications, Vol. 470, No. 3, 01.02.2010, p. 244-249.

Research output: Contribution to journalArticle

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T1 - Electrical and thermal properties of bulk superconductors Eu0.95Pr0.05Ba2(Cu1-xMx)3O7-δ (M = Fe, Ni, Zn and Mn)

AU - Chakraborty, Tirthankar

AU - Gahtori, Bhasker

AU - Soni, Ajay

AU - Okram, G. S.

AU - Agarwal, S. K.

AU - Chen, Y. S.

AU - Kuo, Y. K.

AU - Geetha,

AU - Rao, Ashok

AU - Sarkar, Chandan Kumar

PY - 2010/2/1

Y1 - 2010/2/1

N2 - Measurements of transition temperature, magneto-resistance, thermal conductivity, thermo-electric power and specific heat have been carried out on co-doped samples of Eu0.95Pr0.05Ba2(Cu1-xMx)3O7-δ (M = Fe, Ni, Zn and Mn) compounds. It is found that all samples exhibit metallic behavior, except the co-doped sample of Fe that shows semiconducting behavior. It is seen that the upper-critical field Hc2 decreases with Pr-doping. However, an increase in Hc2 for dopants like Fe and Mn is observed. Thermal conductivity for the pristine sample of EuBa2Cu3O7-δ (Eu-123) exhibits a pronounced hump below the superconducting transition temperature TC. However, the peak height of the hump decreases with Pr-doping and such a feature is further suppressed in the co-doped samples. The negative sign of the measured thermo-electric power of Eu-123 indicates that the dominant carrier in this sample is electron-like, whereas it turns to hole-like for all of the doped samples. A jump in specific heat CP is detected in the pure sample of Eu-123 at TC, while only a change in slope in CP is seen around the transition temperature in the Pr-doped sample.

AB - Measurements of transition temperature, magneto-resistance, thermal conductivity, thermo-electric power and specific heat have been carried out on co-doped samples of Eu0.95Pr0.05Ba2(Cu1-xMx)3O7-δ (M = Fe, Ni, Zn and Mn) compounds. It is found that all samples exhibit metallic behavior, except the co-doped sample of Fe that shows semiconducting behavior. It is seen that the upper-critical field Hc2 decreases with Pr-doping. However, an increase in Hc2 for dopants like Fe and Mn is observed. Thermal conductivity for the pristine sample of EuBa2Cu3O7-δ (Eu-123) exhibits a pronounced hump below the superconducting transition temperature TC. However, the peak height of the hump decreases with Pr-doping and such a feature is further suppressed in the co-doped samples. The negative sign of the measured thermo-electric power of Eu-123 indicates that the dominant carrier in this sample is electron-like, whereas it turns to hole-like for all of the doped samples. A jump in specific heat CP is detected in the pure sample of Eu-123 at TC, while only a change in slope in CP is seen around the transition temperature in the Pr-doped sample.

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