AI Article Synopsis
- Layered bi-misfit cobaltates, like BiSrCoO, consist of alternating insulating BiSrO layers and conducting CoO layers, stacked along the c-axis of the crystal structure.
- Doping the RS layer modifies thermoelectric properties due to charge compensation reactions between the layers.
- The study demonstrates that adding Ca to BiSrCaCoO alloys enhances thermal properties through point-defect phonon scattering, while keeping electronic conductivity and thermopower consistent.
Article 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.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9959144 | PMC |
| http://dx.doi.org/10.3390/ma16041413 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!