Szczegóły publikacji
Opis bibliograficzny
Lone-pair-like interaction and bonding inhomogeneity induce ultralow lattice thermal conductivity in filled β-manganese-type phases / Oleksandr CHERNIUSHOK, Raul Cardoso-Gil, Taras PARASHCHUK, Rafał KNURA, Yuri Grin, Krzysztof T. WOJCIECHOWSKI // Chemistry of Materials ; ISSN 0897-4756. — 2022 — vol. 34 iss. 14, s. 6389-6401. — Bibliogr. s. 6400-6401, Abstr. — Publikacja dostępna online od: 2022-05-27
Autorzy (6)
- AGHCherniushok Oleksandr
- Cardoso-Gil Raul
- AGHParashchuk Taras
- AGHKnura Rafał
- Grin Yuri
- AGHWojciechowski Krzysztof Tomasz
Dane bibliometryczne
| ID BaDAP | 141500 |
|---|---|
| Data dodania do BaDAP | 2022-08-31 |
| Tekst źródłowy | URL |
| DOI | 10.1021/acs.chemmater.2c00915 |
| Rok publikacji | 2022 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Chemistry of Materials |
Abstract
Finding a way to interlink heat transport with the crystal structure and order/disorder phenomena is crucial for designing materials with ultralow lattice thermal conductivity. Here, we revisit the crystal structure and explore the thermoelectric properties of several compounds from the family of the filled β-Mn-type phases M2/nn+Ga6Te10 (M = Pb, Sn, Ca, Na, Na + Ag). The strongly disturbed thermal transport observed in the investigated materials originates from a three-dimensional Te–Ga network with lone-pair-like interactions, which results in large variations of the Ga–Te and M–Te interatomic distances and substantial anharmonic effects. In the particular case of NaAgGa6Te10, the additional presence of different cations leads to bonding inhomogeneity and strong structural disorder, resulting in a dramatically low lattice thermal conductivity (∼0.25 Wm–1 K–1 at 298 K), being the lowest among the reported β-Mn-type phases. This study offers a way to develop materials with ultralow lattice thermal conductivity by considering bonding inhomogeneity and lone-pair-like interactions.
