High-temperature thermoelectric properties of W-substituted CaMnO3
Alfaruq, Dimas S. ; Eilertsen, James ; Thiel, Philipp ; Aguirre, Myriam H (Universidad de Zaragoza) ; Otal, Eugenio ; Populoh, Sascha ; Yoon, Songhak ; Weidenkaff, Anke
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.
Idioma: Inglés
DOI: 10.1557/opl.2013.85
Año: 2013
Publicado en: Materials Research Society symposia proceedings 1490 (2013), 135-140
ISSN: 0272-9172
Tipo y forma: Article (PostPrint)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material.
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Idioma: Inglés
DOI: 10.1557/opl.2013.85
Año: 2013
Publicado en: Materials Research Society symposia proceedings 1490 (2013), 135-140
ISSN: 0272-9172
Tipo y forma: Article (PostPrint)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material. Exportado de SIDERAL (2024-04-10-08:38:31)
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