Work

The structure of a new nano-phase of lanthanum-doped strontium titanate

Year: 2020

Type: article

Abstract: A novel ordered phase in La-doped SrTiO3 was determined through three-dimensional electron diffraction studies. An overall stoichiometry of LaSr7Ti8O23 leads to a monoclinic structure with layers of square pyramids of TiO5 localised near the lanthanum substituted positions. The difference in crystal structure of the nanoprecipitates, particularly the connection of the rigid Ti–O frameworks, should affect the phonon interactions in the bulk material and so helps to explain a decrease in the lattice thermal conductivity in the La-doped SrTiO3, which is beneficial towards desired thermoelectric properties.

Source: Journal of Solid State Chemistry

DOI: 10.1016/j.jssc.2020.121795

Authors: Ercin C. Duran, Alexander S. Eggeman

Institution: University of Manchester

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,200

Funders: Royal Society, Milli Eğitim Bakanliği, Engineering and Physical Sciences Research Council, Department of Engineering Physics, University of Wisconsin-Madison