Structural and low temperature Raman scattering studies in SrTi1−x CoxO3 nanoparticles synthesized by sol–gel method

The thermoelectric properties of double-perovskite oxide Sr2−xLaxCoTiO6−δ were revealed to vary anomalously with the La concentration, plausibly due to a structural transition found in this study. Although the temperature dependence of the resistivity and thermopower of the present oxide showed a semiconductor-to-metal transition similar to those observed for other perovskite-related Co oxides such as Sr1−xYxCoO3−δ, the transition temperature was more than 350 K higher, implying considerable stabilization of the low-spin state of Co ions in the double-perovskite oxide. Consequently, the operating temperature range of the oxide for potential thermoelectric applications was significantly expanded toward higher temperatures.

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Structural and low temperature Raman scattering studies in SrTi1−x CoxO3 nanoparticles synthesized by sol–gel method

Cited by 3 publications

References 32 publications

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