English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Lone-Pair-Like Interaction and Bonding Inhomogeneity Induce Ultralow Lattice Thermal Conductivity in Filled β-Manganese-Type Phases

Cherniushok, O., Cardoso-Gil, R., Parashchuk, T., Knura, R., Grin, Y., & Wojciechowski, K. T. (2022). Lone-Pair-Like Interaction and Bonding Inhomogeneity Induce Ultralow Lattice Thermal Conductivity in Filled β-Manganese-Type Phases. Chemistry of Materials, 1-13. doi:10.1021/acs.chemmater.2c00915.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Cherniushok, Oleksandr1, Author
Cardoso-Gil, Raul2, Author              
Parashchuk, Taras1, Author
Knura, Rafal1, Author
Grin, Yuri3, Author              
Wojciechowski, Krzysztof T.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Raul Cardoso, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863420              
3Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863413              

Content

show
hide
Free keywords: -
 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.

Details

show
hide
Language(s): eng - English
 Dates: 2022-05-272022-05-27
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1021/acs.chemmater.2c00915
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Chemistry of Materials
  Abbreviation : Chem. Mater.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 1 - 13 Identifier: ISSN: 0897-4756
CoNE: https://pure.mpg.de/cone/journals/resource/954925561571