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Journal of Materials Science: Materials in Electronics
Erschienen in: Journal of Materials Science: Materials in Electronics 8/2013

01.08.2013

Thermoelectric properties of GdBaCo2−x Fe x O5+δ ceramics

verfasst von: Feng Gao, Jing Zhang, Hongzhang Song, Zhen Qin, Delin Yang, Xing Hu

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 8/2013

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Abstract

The influence of Fe doping on the lattice structure and thermoelectric properties of GdBaCo2−x Fe x O5+δ (x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) ceramics was studied from room temperature to 525 K. The results show that presence of Fe will increase both electrical resistivity and Seebeck coefficients of the samples. Due to the lattice misfit and carrier concentration reduction caused by Fe, the thermal conductivity of the sample decreases. The activation energy of conductivity is larger than that of thermopower calculated in the semiconductive region, which means that the conduction mechanism may be determined as a small polaron hopping model. The optimum Fe doping amount is x = 0.6, which results in a ZT value 0.02 at 373 K.
Vorheriger Artikel Structure and energy storage properties of Ti vacancies charge compensated Re 2O3-doped SrTiO3 (Re = Pr, Nd, Gd) ceramics
Nächster Artikel Synthesis, structural, electrical and dielectric properties of Zn–Zr doped strontium hexaferrite nanoparticles

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Metadaten
Titel
Thermoelectric properties of GdBaCo2−x Fe x O5+δ ceramics
verfasst von
Feng Gao
Jing Zhang
Hongzhang Song
Zhen Qin
Delin Yang
Xing Hu
Publikationsdatum
01.08.2013
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 8/2013
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-013-1216-0

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