Studies on the power factor of (Ba,Sr)Co2+xRu4−xO11 compounds

Pato Doldán, Breogán; Sánchez-Andújar, Manuel; Castro-García, Socorro; Señarís-Rodríguez, M. A.

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http://hdl.handle.net/2183/14022

Studies on the power factor of (Ba,Sr)Co2+xRu4−xO11 compounds

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CastroGarcia_Socorro_2011_Studies_power-factor_Ruthenates_Seebeck_coefficient_Power factor.pdf (426.41 KB)

Identifiers

URI: http://hdl.handle.net/2183/14022

Publication date

2011-02

Authors

Pato Doldán, Breogán

Sánchez-Andújar, Manuel

Castro-García, Socorro

Señarís-Rodríguez, M. A.

Bibliographic citation

Pato-Doldán B, Sánchez-Andújar M, Castro-García S, Señarís-Rodríguez MA. Studies on the power factor of (ba,sr)Co2+xRu 4-xO11 compounds. J Alloys Compounds 2011;509(5):1529-33

Abstract

[Abstract] We have prepared polycrystalline single-phase ACo2+xRu4−xO11 (A = Sr, Ba; 0 ≤ x ≤ 0.5) using the ceramic method and we have studied their structure, electrical resistivity and Seebeck coefficient, in order to estimate their power factor (P.F.). These layered compounds show values of electrical resistivity of the order of 10−5 Ωm and their Seebeck coefficients are positive and range from 1 μV K−1 (T = 100 K) to 20 μV K−1 (T = 450 K). The maximum power factor at room temperature is displayed by BaCo2Ru4O11 (P.F.: 0.20 μW K−2 cm−1), value that is comparable to that shown by compounds such as SrRuO3 and Sr6Co5O15.