Artículo

High-temperature thermoelectric properties of W-substituted CaMnO 3

Alfaruq, Dimas S.; Eilertsen, James; Thiel, Philipp; Aguirre, Myriam H.; Otal, Eugenio HernanIcon ; Populoh, Sascha; Yoon, Songhak; Weidenkaff, Anke
Fecha de publicación: 12/2013
Editorial: Materials Research Society
Revista: Mat. Res. Soc. Symp. Proc. (pittsburg)
ISSN: 0272-9172
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:

Resumen

The thermoelectric properties of W-substituted CaMn1-xWxO3-δ (x = 0.01, 0.03; 0.05) samples, prepared by soft chemistry, were investigated from 300 K to 1000 K and compared to Nb-substituted CaMn0.98Nb0.02O3-δ. All compositions exhibit both an increase in absolute Seebeck coefficient and electrical resistivity with temperature. Moreover, compared to the Nb-substituted sample, the thermal conductivity of the W-substituted samples was strongly reduced. This reduction is attributed to the nearly two times greater mass of tungsten. Consequently, a ZT of 0.19 was found in CaMn0.97W0.03O3-δ at 1000 K, which was larger than ZT exhibited by the 2% Nb-doped sample.
Palabras clave: Termoelectricidad , Rayos X , Oxidos
 
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
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URI: http://hdl.handle.net/11336/2185
DOI: http://dx.doi.org/10.1557/opl.2013.85
URL: http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=8825212
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Articulos de UNIDAD DE INVESTIGACION Y DESARROLLO ESTRATEGICOS PARA LA DEFENSA
Citación
Alfaruq, Dimas S.; Eilertsen, James; Thiel, Philipp; Aguirre, Myriam H.; Otal, Eugenio Hernan; et al.; High-temperature thermoelectric properties of W-substituted CaMnO 3; Materials Research Society; Mat. Res. Soc. Symp. Proc. (pittsburg); 1490; 12-2013; 3-8
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