Thermal Transport Measurements of LaCoO3 and SrTiO3

dc.creatorCortes, Alexander
dc.creatorTrujillo Hern?ndez, Juan Sebasti?n
dc.creatorPiamba, Jefferson
dc.creatorLopera, Wilson
dc.creatorPrieto, Pedro
dc.date2019-02-27T21:16:11Z
dc.date2019-02-27T21:16:11Z
dc.date2018-08-16
dc.date.accessioned2023-08-31T19:24:27Z
dc.date.available2023-08-31T19:24:27Z
dc.identifierCortes, A., Hernandez, J.S.T., Piamba, J.F. et al. J Supercond Nov Magn (2018).
dc.identifier1557-1947
dc.identifierhttps://link.springer.com/article/10.1007%2Fs10948-018-4840-3
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8558001
dc.descriptionThermal conductivity and thermopower measurements as functions of temperature were carried out on SrTiO3 single crystals below room temperature and compared to those obtained for LaCoO3 polycrystalline samples. The maximum value of thermal conductivity for SrTiO3 (110) and Nb-doped SrTiO3 single crystals was 1.09 and 0.91 W/mK, respectively, at 300 K. The thermopower measurements were ??5.47 and ??41.17 ? V/K, respectively, at 300 K. This indicates the predominance of negative charge carriers or electrons in the material. Measurements on LaCoO3 polycrystalline samples yielded maximum values of 0.37 W/mK and 620 ? V/K for thermal conductivity and thermopower, respectively. These positive values suggest that positive charge carriers are predominant or that the compound is slightly hole-doped. We studied the effect of Nb doping on the thermopower and thermal conductivity of SrTiO3 and contrasted the results obtained with similar measurements on LaCoO3.
dc.languageen
dc.publisherJournal of Superconductivity and Novel Magnetism
dc.subjectThermoelectricity
dc.subjectEnergy conversion
dc.subjectCobaltites
dc.subjectPerovskite structure
dc.subjectThermal conductivity
dc.subjectThermopower
dc.subjectSpin transition
dc.titleThermal Transport Measurements of LaCoO3 and SrTiO3
dc.typeArticle


Este ítem pertenece a la siguiente institución