High-Temperature thermoelectric properties in the La2-xR xCuO4 (R: Pr, Y, Nb) ceramics

Yong Liu; Yuan Hua Lin; Bo Ping Zhang; Hong Min Zhu; Ce Wen Nan; Jinle Lan; Jing Feng Li

doi:10.1111/j.1551-2916.2009.02952.x

High-Temperature thermoelectric properties in the La_2-xR _xCuO₄ (R: Pr, Y, Nb) ceramics

Yong Liu, Yuan Hua Lin, Bo Ping Zhang, Hong Min Zhu, Ce Wen Nan, Jinle Lan, Jing Feng Li

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

22 Citations (Scopus)

Abstract

La_2-xR_xCuO₄ (R: Pr, Y, Nb) polycrystalline ceramics have been prepared by a spark plasma sintering process. Analysis of the microstructure and phase composition shows that pure La ₂CuO₄ ceramics with a high density can be obtained, and no impurity phases appear. All the samples exhibit a metal-semiconductor transition behavior at ∼750 K, which could be ascribed to the decreasing charge density as a result of loss of oxygen atoms and various conduction mechanisms in these La₂CuO₄-based ceramics. Our results indicate that the La_1.98Y_0.02CuO₄ ceramics show large thermoelectric power ∼1.0 × 10^-3 μW·(m·K²)^-1, and the evaluated ZT can reach 0.17 at 330 K, which potentially make them useful for thermoelectric applications.

Original language	English
Pages (from-to)	934-937
Number of pages	4
Journal	Journal of the American Ceramic Society
Volume	92
Issue number	4
DOIs	https://doi.org/10.1111/j.1551-2916.2009.02952.x
Publication status	Published - 2009 Apr 1
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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10.1111/j.1551-2916.2009.02952.x

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title = "High-Temperature thermoelectric properties in the La2-xR xCuO4 (R: Pr, Y, Nb) ceramics",

abstract = "La2-xRxCuO4 (R: Pr, Y, Nb) polycrystalline ceramics have been prepared by a spark plasma sintering process. Analysis of the microstructure and phase composition shows that pure La 2CuO4 ceramics with a high density can be obtained, and no impurity phases appear. All the samples exhibit a metal-semiconductor transition behavior at ∼750 K, which could be ascribed to the decreasing charge density as a result of loss of oxygen atoms and various conduction mechanisms in these La2CuO4-based ceramics. Our results indicate that the La1.98Y0.02CuO4 ceramics show large thermoelectric power ∼1.0 × 10-3 μW·(m·K2)-1, and the evaluated ZT can reach 0.17 at 330 K, which potentially make them useful for thermoelectric applications.",

author = "Yong Liu and Lin, {Yuan Hua} and Zhang, {Bo Ping} and Zhu, {Hong Min} and Nan, {Ce Wen} and Jinle Lan and Li, {Jing Feng}",

year = "2009",

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doi = "10.1111/j.1551-2916.2009.02952.x",

language = "English",

volume = "92",

pages = "934--937",

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T1 - High-Temperature thermoelectric properties in the La2-xR xCuO4 (R

T2 - Pr, Y, Nb) ceramics

AU - Liu, Yong

AU - Lin, Yuan Hua

AU - Zhang, Bo Ping

AU - Zhu, Hong Min

AU - Nan, Ce Wen

AU - Lan, Jinle

AU - Li, Jing Feng

PY - 2009/4/1

Y1 - 2009/4/1

N2 - La2-xRxCuO4 (R: Pr, Y, Nb) polycrystalline ceramics have been prepared by a spark plasma sintering process. Analysis of the microstructure and phase composition shows that pure La 2CuO4 ceramics with a high density can be obtained, and no impurity phases appear. All the samples exhibit a metal-semiconductor transition behavior at ∼750 K, which could be ascribed to the decreasing charge density as a result of loss of oxygen atoms and various conduction mechanisms in these La2CuO4-based ceramics. Our results indicate that the La1.98Y0.02CuO4 ceramics show large thermoelectric power ∼1.0 × 10-3 μW·(m·K2)-1, and the evaluated ZT can reach 0.17 at 330 K, which potentially make them useful for thermoelectric applications.

AB - La2-xRxCuO4 (R: Pr, Y, Nb) polycrystalline ceramics have been prepared by a spark plasma sintering process. Analysis of the microstructure and phase composition shows that pure La 2CuO4 ceramics with a high density can be obtained, and no impurity phases appear. All the samples exhibit a metal-semiconductor transition behavior at ∼750 K, which could be ascribed to the decreasing charge density as a result of loss of oxygen atoms and various conduction mechanisms in these La2CuO4-based ceramics. Our results indicate that the La1.98Y0.02CuO4 ceramics show large thermoelectric power ∼1.0 × 10-3 μW·(m·K2)-1, and the evaluated ZT can reach 0.17 at 330 K, which potentially make them useful for thermoelectric applications.

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High-Temperature thermoelectric properties in the La_2-xR _xCuO₄ (R: Pr, Y, Nb) ceramics

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