Home > Articles > Published articles > Enhanced Thermoelectric Properties of Misfit BiSrCaCoO : |
Date: | 2023 |
Abstract: | Layered Bi-misfit cobaltates, such as BiSrCoO, are the natural superlattice of an electrically insulating rocksalt (RS) type BiSrO layer and electrically conducting CoO layer, stacked along the crystallographic c-axis. RS and CoO layers are related through charge compensation reactions (or charge transfer). Therefore, thermoelectric transport properties are affected when doping or substitution is carried out in the RS layer. In this work, we have shown improved thermoelectric properties of spark plasma sintered BiSrCaCoO alloys (x = 0, 0. 3 and 0. 5). The substitution of Ca atoms affects the thermal properties by introducing point-defect phonon scattering, while the electronic conductivity and thermopower remain unaltered. |
Grants: | Agencia Estatal de Investigación SEV-2017-0706 Ministerio de Economía y Competitividad FIS2015-70862-P Agencia Estatal de Investigación MAT2016-77100-C2-1-P European Commission 645658 European Commission 101029727 |
Rights: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
Language: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Subject: | Misfit cobaltates ; Thermoelectric properties ; Misfit-layer ; Isovalent substitutions |
Published in: | Materials, Vol. 16, Issue 4 (February 2023) , art. 1413, ISSN 1996-1944 |
12 p, 2.0 MB |