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Author:

Zhang Feipeng (Zhang Feipeng.) | Niu Baocheng (Niu Baocheng.) | Zhang Kunshu (Zhang Kunshu.) | Zhang Xin (Zhang Xin.) | Lu Qingmei (Lu Qingmei.) | Zhang Jiuxing (Zhang Jiuxing.)

Indexed by:

EI Scopus SCIE CSCD

Abstract:

The rare earth Pr doped Ca1-xPrxMnO3 (x=0, 0.06, 0.08, 0.1, 0.12, and 0.14) compound bulk samples were prepared to study the effect of Pr doping on thermoelectric transport properties of CaMnO3 compound system. The doped samples exhibited single phase composition within the experimental doping range, with condensed bulk microstructure and small porosities. The electrical resistivity was remarkably reduced for doped samples, on account of the enhanced carrier concentration; the absolute value of Seebeck coefficient was deteriorated mainly due to enhanced electron carrier concentration. The electrical performances of the doped samples reflected by resistivity and Seebeck coefficient fluctuations were optimistically tuned, with an optimized power factor value of 0.342 mW/(m.K-2) at 873 K for x=0.08 sample, which was very much higher comparing with that of the un-doped sample. The lattice thermal conduction was really confined, leading to distinctly repressed total thermal conductivity. The thermoelectric performance was noticeably improved by Pr doping and the dimensionless figure of merit ZT for the Ca0.92Pr0.08MnO3 compound was favorably optimized with the maximum value 0.16 at 873 K.

Keyword:

CaMnO3 compound Pr doping thermoelectric properties rare earths

Author Community:

  • [ 1 ] [Zhang Feipeng]Henan Univ Urban Construct, Inst Phys, Pingdingshan 467036, Peoples R China
  • [ 2 ] [Niu Baocheng]Henan Univ Urban Construct, Inst Phys, Pingdingshan 467036, Peoples R China
  • [ 3 ] [Zhang Kunshu]Henan Univ Urban Construct, Inst Phys, Pingdingshan 467036, Peoples R China
  • [ 4 ] [Zhang Feipeng]Beijing Univ Technol, Coll Mat Sci & Engn, Chinese Minist Educ, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
  • [ 5 ] [Zhang Xin]Beijing Univ Technol, Coll Mat Sci & Engn, Chinese Minist Educ, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
  • [ 6 ] [Lu Qingmei]Beijing Univ Technol, Coll Mat Sci & Engn, Chinese Minist Educ, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
  • [ 7 ] [Zhang Jiuxing]Beijing Univ Technol, Coll Mat Sci & Engn, Chinese Minist Educ, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China

Reprint Author's Address:

  • [Zhang Feipeng]Henan Univ Urban Construct, Inst Phys, Pingdingshan 467036, Peoples R China

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Source :

JOURNAL OF RARE EARTHS

ISSN: 1002-0721

Year: 2013

Issue: 9

Volume: 31

Page: 885-890

4 . 9 0 0

JCR@2022

ESI Discipline: CHEMISTRY;

JCR Journal Grade:2

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count: 20

SCOPUS Cited Count: 22

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 5

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