Szczegóły publikacji
Opis bibliograficzny
Effective thermal conductivity of $SrBi_{4}Ti_{4}O_{15}$-$La_{0.7}Sr_{0.3}MnO_{3}$ oxide composite: role of particle size and interface thermal resistance / Ashutosh Kumar, Artur KOSONOWSKI, Piotr Wyzga, Krzysztof T. WOJCIECHOWSKI // Journal of the European Ceramic Society ; ISSN 0955-2219. — Tytuł poprz.: International Journal of High Technology Ceramics. — 2021 — vol. 41 iss. 1, s. 451–458. — Bibliogr. s. 458, Abstr. — Publikacja dostępna online od: 2020-09-01
Autorzy (4)
- Kumar Ashutosh
- AGHKosonowski Artur
- Wyzga Piotr
- AGHWojciechowski Krzysztof Tomasz
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 130830 |
|---|---|
| Data dodania do BaDAP | 2020-11-06 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jeurceramsoc.2020.08.069 |
| Rok publikacji | 2021 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of the European Ceramic Society |
Abstract
We present a novel approach to reduce the thermal conductivity (k) in thermoelectric composite materials using acoustic impedance mismatch and the Debye model. Also, the correlation between interface thermal resistance (Rint) and the particle size of the dispersed phase on the k of the composite is discussed. In particular, the k of an oxide composite, which consists of a natural superlattice Aurivillius phase (SrBi4Ti4O15) as a matrix and perovskite (La0.7Sr0.3MnO3) as a dispersed phase, is investigated. A significant reduction in k of composite, even lower than the k of the matrix when the particle size of La0.7Sr0.3MnO3 is smaller than the Kapitza radius (aK) is observed, depicting that Rint dominates for particle size lower than aK due to increased surface to volume ratio. The obtained results have the potential to provide new directions for engineering composite thermoelectric systems with desired thermal conductivity and promising in the field of energy harvesting.
