Dislocation strain as the mechanism of phonon scattering at grain boundaries

Hyun Sik Kim; Stephen D. Kang; Yinglu Tang; Riley Hanus; G. Jeffrey Snyder

doi:10.1039/c5mh00299k

Dislocation strain as the mechanism of phonon scattering at grain boundaries

Hyun Sik Kim, Stephen D. Kang, Yinglu Tang, Riley Hanus, G. Jeffrey Snyder

Department of Materials Science and Engineering

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

115 Scopus citations

Abstract

Thermal conductivities of polycrystalline thermoelectric materials are satisfactorily calculated by replacing the commonly used Casimir model (freqeuncy-independent) with grain boundary dislocation strain model (frequency-dependent) of Klemens. It is demonstrated that the grain boundaries are better described as a collection of dislocations rather than perfectly scattering interfaces.

Original language	English
Pages (from-to)	234-240
Number of pages	7
Journal	Materials Horizons
Volume	3
Issue number	3
DOIs	https://doi.org/10.1039/c5mh00299k
State	Published - May 2016

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title = "Dislocation strain as the mechanism of phonon scattering at grain boundaries",

abstract = "Thermal conductivities of polycrystalline thermoelectric materials are satisfactorily calculated by replacing the commonly used Casimir model (freqeuncy-independent) with grain boundary dislocation strain model (frequency-dependent) of Klemens. It is demonstrated that the grain boundaries are better described as a collection of dislocations rather than perfectly scattering interfaces.",

author = "Kim, {Hyun Sik} and Kang, {Stephen D.} and Yinglu Tang and Riley Hanus and {Jeffrey Snyder}, G.",

note = "Publisher Copyright: {\textcopyright} 2016 The Royal Society of Chemistry.",

year = "2016",

month = may,

doi = "10.1039/c5mh00299k",

language = "English",

volume = "3",

pages = "234--240",

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T1 - Dislocation strain as the mechanism of phonon scattering at grain boundaries

AU - Kim, Hyun Sik

AU - Kang, Stephen D.

AU - Tang, Yinglu

AU - Hanus, Riley

AU - Jeffrey Snyder, G.

PY - 2016/5

Y1 - 2016/5

N2 - Thermal conductivities of polycrystalline thermoelectric materials are satisfactorily calculated by replacing the commonly used Casimir model (freqeuncy-independent) with grain boundary dislocation strain model (frequency-dependent) of Klemens. It is demonstrated that the grain boundaries are better described as a collection of dislocations rather than perfectly scattering interfaces.

AB - Thermal conductivities of polycrystalline thermoelectric materials are satisfactorily calculated by replacing the commonly used Casimir model (freqeuncy-independent) with grain boundary dislocation strain model (frequency-dependent) of Klemens. It is demonstrated that the grain boundaries are better described as a collection of dislocations rather than perfectly scattering interfaces.

UR - http://www.scopus.com/inward/record.url?scp=84967155776&partnerID=8YFLogxK

U2 - 10.1039/c5mh00299k

DO - 10.1039/c5mh00299k

M3 - Article

AN - SCOPUS:84967155776

SN - 2051-6347

VL - 3

SP - 234

EP - 240

JO - Materials Horizons

JF - Materials Horizons

IS - 3

ER -

Dislocation strain as the mechanism of phonon scattering at grain boundaries

Abstract

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