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

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

Research output: Contribution to journal › Article

16 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

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ASJC Scopus subject areas

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

Cite this

Nanda Kishore, K., Satyavathi, S., Miryala, 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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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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10.1016/0921-4534(95)00284-7