Thermoelectric power studies on the Sm substituted BPSCCO (2223) superconductors

K. Nanda Kishore, S. Satyavathi, Muralidhar Miryala, O. Pena, V. Hari Babu

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Measurements of the thermoelectric power have been carried out on Bi1.7Pb0.3Sr2Ca2-xSmxCu3Oy (0.0≤x ≤2.0) specimens between 77 K and 300 K. The hole-carrier concentrations were calculated from the room-temperature thermopower values and it was found to decrease with increasing Sm concentration. The temperature variation of the thermopower is similar for all the samples and has indicated a two-band conduction. The results also have suggested an increased interaction of electrons and holes with phonons at low temperatures. The thermopower has attained a maximum value just above the transition temperature and thereafter decreased with increasing temperature. The thermopower value has also undergone a sign change at a temperature which varied systematically with Sm concentration. The results are presented and discussed.

Original languageEnglish
Pages (from-to)49-53
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume252
Issue number1-2
DOIs
Publication statusPublished - 1995 Oct 1
Externally publishedYes

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Thermoelectric power
Superconducting materials
Temperature
temperature
conduction bands
phonons
transition temperature
Phonons
Conduction bands
Superconducting transition temperature
Carrier concentration
room temperature
electrons
interactions
Electrons

ASJC Scopus subject areas

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

Cite this

Thermoelectric power studies on the Sm substituted BPSCCO (2223) superconductors. / Nanda Kishore, K.; Satyavathi, S.; Miryala, Muralidhar; Pena, O.; Hari Babu, V.

In: Physica C: Superconductivity and its Applications, Vol. 252, No. 1-2, 01.10.1995, p. 49-53.

Research output: Contribution to journalArticle

Nanda Kishore, K. ; Satyavathi, S. ; Miryala, Muralidhar ; Pena, O. ; Hari Babu, V. / Thermoelectric power studies on the Sm substituted BPSCCO (2223) superconductors. In: Physica C: Superconductivity and its Applications. 1995 ; Vol. 252, No. 1-2. pp. 49-53.
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