High temperature thermoelectric characteristics of Ca(0.9)R(0.1)MnO(3) (R=La, Pr, ... , Yb)

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	High temperature thermoelectric characteristics of Ca(0.9)R(0.1)MnO(3) (R=La, Pr, ... , Yb)
	Y. Wang; Y. Sui; W. H. Su
	2008
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	104 期号:9
摘要	Electron-doped perovskite manganite Ca(0.9)R(0.1)MnO(3) (R= La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb) polycrystalline samples were prepared and their transport and thermoelectric properties were studied from room temperature to 1000 K. The transport behavior for all the samples is adiabatic small polaron hopping mechanism below 600 K but changes to metallic conductivity at higher temperature. Above 600 K, more 3d electrons of Mn(3+) ions will occupy e(g) orbitals, resulting in the variation in thermoelectric power values. For all the samples, thermoelectric power is only determined by carrier concentration, but resistivity also rests with effective bandwidth. The size matching between Ca(2+) and R(3+) ions together with heavier R(3+) doping can improve thermoelectric performance evidently. Combining these two factors, Ca(0.9)Dy(0.1)MnO(3) and Ca(0.9)Yb(0.1)MnO(3) reach ZT=0.2 at 1000 K, suggesting that they can be efficient high temperature n-type thermoelectric oxide materials. (c) 2008 American Institute of Physics. [DOI: 10.1063/1.3003065]
部门归属	[wang, yang; sui, yu; su, wenhui] harbin inst technol, dept phys, ctr condensed matter sci & technol, harbin 150001, peoples r china. [sui, yu; su, wenhui] acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;sui, y (reprint author), harbin inst technol, dept phys, ctr condensed matter sci & technol, harbin 150001, peoples r china;suiyu@hit.edu.cn
关键词	Transport-properties Oxide System Performance Fabrication Antimonides Manganites Ca3co4o9 Physics Camno3
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WOS记录号	WOS:000260941700056
引用统计	被引频次：114[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33160
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Wang,Y. Sui,W. H. Su. High temperature thermoelectric characteristics of Ca(0.9)R(0.1)MnO(3) (R=La, Pr, ... , Yb)[J]. Journal of Applied Physics,2008,104(9).
APA	Y. Wang,Y. Sui,&W. H. Su.(2008).High temperature thermoelectric characteristics of Ca(0.9)R(0.1)MnO(3) (R=La, Pr, ... , Yb).Journal of Applied Physics,104(9).
MLA	Y. Wang,et al."High temperature thermoelectric characteristics of Ca(0.9)R(0.1)MnO(3) (R=La, Pr, ... , Yb)".Journal of Applied Physics 104.9(2008).