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

K. Nanda Kishore; S. Satyavathi; M. Muralidhar; O. Pena; V. Hari Babu

doi:10.1016/0921-4534(95)00284-7

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

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

Research output: Contribution to journal › Article

17 Citations (Scopus)

Abstract

Measurements of the thermoelectric power have been carried out on Bi_1.7Pb_0.3Sr₂Ca_2-xSm_xCu₃O_y (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 language	English
Pages (from-to)	49-53
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	252
Issue number	1-2
DOIs	https://doi.org/10.1016/0921-4534(95)00284-7
Publication status	Published - 1995 Oct 1
Externally published	Yes

ASJC Scopus subject areas

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

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Nanda Kishore, K., Satyavathi, S., Muralidhar, M., Pena, O., & Hari Babu, V. (1995). Thermoelectric power studies on the Sm substituted BPSCCO (2223) superconductors. Physica C: Superconductivity and its applications, 252(1-2), 49-53. https://doi.org/10.1016/0921-4534(95)00284-7

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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.",

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AU - Pena, O.

AU - Hari Babu, V.

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N2 - 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.

AB - 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.

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