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RESEARCH PRODUCT
La 1−xCaxMnO3 semiconducting nanostructures: morphology and thermoelectric properties
Clara M. GómezRaquel ToránMario CulebrasAndrés Cantarerosubject
Materials scienceNano ExpressDopantNanochemistryNanotechnologyThermoelectricityThermoelectric materialsCondensed Matter PhysicsNanostructuresThermoelectric generatorMaterials Science(all)Electrical resistivity and conductivitySeebeck coefficientThermoelectric effectPerovskitesGeneral Materials ScienceChemical stabilitySeebeckdescription
Semiconducting metallic oxides, especially perosvkite materials, are great candidates for thermoelectric applications due to several advantages over traditionally metallic alloys such as low production costs and high chemical stability at high temperatures. Nanostructuration can be the key to develop highly efficient thermoelectric materials. In this work, La 1−xCa x MnO3 perosvkite nanostructures with Ca as a dopant have been synthesized by the hydrothermal method to be used in thermoelectric applications at room temperature. Several heat treatments have been made in all samples, leading to a change in their morphology and thermoelectric properties. The best thermoelectric efficiency has been obtained for a Ca content of x=0.5. The electrical conductivity and Seebeck coefficient are strongly related to the calcium content.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-08-21 | Nanoscale Research Letters |