Nanostructuring in β-Zn 4Sb 3 with variable starting Zn compositions

Protima Rauwel; Ole Martin Laøvvik; Erwan Rauwel; Eric S. Toberer; G. Jeffrey Snyder; Johan Taftaø

doi:10.1002/pssa.201026613

Nanostructuring in β-Zn ₄Sb ₃ with variable starting Zn compositions

Protima Rauwel^*, Ole Martin Laøvvik, Erwan Rauwel, Eric S. Toberer, G. Jeffrey Snyder, Johan Taftaø

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

Thermoelectric Zn _4-δSb ₃ samples with varying Zn concentrations were synthesized. The morphology, along with planar and extended defects was studied using transmission electron microscopy (TEM). For all the Zn concentrations, nanostructuring was observed. Depending on the Zn concentration, two different types of nanostructures were observed: nanovoids and nanograins. Three samples with Zn:Sb ratios of 1.28, 1.30, and 1.36 were studied. The presence of the secondary phases was discussed in terms of the phase diagram. Density functional theory (DFT) calculations further elucidated the formation of secondary phases as a function of different Zn:Sb ratio. ZnSb nanoparticles in β-Zn ₄Sb ₃.

Original language	English (US)
Pages (from-to)	1652-1657
Number of pages	6
Journal	Physica Status Solidi (A) Applications and Materials Science
Volume	208
Issue number	7
DOIs	https://doi.org/10.1002/pssa.201026613
State	Published - Jul 2011

Keywords

Zn Sb
density functional theory
nanostructures
thermoelectric materials
transmission electron microscopy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Electrical and Electronic Engineering
Materials Chemistry

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title = "Nanostructuring in β-Zn 4Sb 3 with variable starting Zn compositions",

abstract = "Thermoelectric Zn 4-δSb 3 samples with varying Zn concentrations were synthesized. The morphology, along with planar and extended defects was studied using transmission electron microscopy (TEM). For all the Zn concentrations, nanostructuring was observed. Depending on the Zn concentration, two different types of nanostructures were observed: nanovoids and nanograins. Three samples with Zn:Sb ratios of 1.28, 1.30, and 1.36 were studied. The presence of the secondary phases was discussed in terms of the phase diagram. Density functional theory (DFT) calculations further elucidated the formation of secondary phases as a function of different Zn:Sb ratio. ZnSb nanoparticles in β-Zn 4Sb 3.",

keywords = "Zn Sb, density functional theory, nanostructures, thermoelectric materials, transmission electron microscopy",

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AU - Rauwel, Protima

AU - Laøvvik, Ole Martin

AU - Rauwel, Erwan

AU - Toberer, Eric S.

AU - Snyder, G. Jeffrey

AU - Taftaø, Johan

PY - 2011/7

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N2 - Thermoelectric Zn 4-δSb 3 samples with varying Zn concentrations were synthesized. The morphology, along with planar and extended defects was studied using transmission electron microscopy (TEM). For all the Zn concentrations, nanostructuring was observed. Depending on the Zn concentration, two different types of nanostructures were observed: nanovoids and nanograins. Three samples with Zn:Sb ratios of 1.28, 1.30, and 1.36 were studied. The presence of the secondary phases was discussed in terms of the phase diagram. Density functional theory (DFT) calculations further elucidated the formation of secondary phases as a function of different Zn:Sb ratio. ZnSb nanoparticles in β-Zn 4Sb 3.

AB - Thermoelectric Zn 4-δSb 3 samples with varying Zn concentrations were synthesized. The morphology, along with planar and extended defects was studied using transmission electron microscopy (TEM). For all the Zn concentrations, nanostructuring was observed. Depending on the Zn concentration, two different types of nanostructures were observed: nanovoids and nanograins. Three samples with Zn:Sb ratios of 1.28, 1.30, and 1.36 were studied. The presence of the secondary phases was discussed in terms of the phase diagram. Density functional theory (DFT) calculations further elucidated the formation of secondary phases as a function of different Zn:Sb ratio. ZnSb nanoparticles in β-Zn 4Sb 3.

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KW - nanostructures

KW - thermoelectric materials

KW - transmission electron microscopy

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