Studies on the power factor of (Ba,Sr)Co2+xRu4−xO11 compounds
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Studies on the power factor of (Ba,Sr)Co2+xRu4−xO11 compoundsAutor(es)
Data
2011-02Cita bibliográfica
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
Resumo
[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.
Palabras chave
Seebeck coefficient
Power factor
Uthenates
SrCo2+xRu4−xO11
BaCo2+xRu4−xO11
Power factor
Uthenates
SrCo2+xRu4−xO11
BaCo2+xRu4−xO11
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ISSN
0925-8388