Dislocation strain as the mechanism of phonon scattering at grain boundaries

被引：127

作者：

Kim, Hyun-Sik ^{[1
,2
,3
]}

Kang, Stephen D. ^{[1
,2
]}

Tang, Yinglu ^{[1
,2
,4
]}

Hanus, Riley ^{[1
]}

Snyder, G. Jeffrey ^{[1
,2
]}

机构：

[1] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

[2] CALTECH, Dept Appl Phys & Mat Sci, Pasadena, CA 91125 USA

[3] Samsung Elect, Samsung Adv Inst Technol, Mat Res Ctr, Suwon 443803, South Korea

[4] Swiss Fed Labs Mat Sci & Technol, Uberlandstr 129, CH-8600 Dubendorf, Switzerland

来源：

MATERIALS HORIZONS | 2016年 / 3卷 / 03期

关键词：

LATTICE THERMAL-CONDUCTIVITY; GE-SI ALLOYS; THERMOELECTRIC-MATERIALS; LOW TEMPERATURES; CRYSTAL; METALS; ARRAYS; FILMS; HEAT;

D O I：

10.1039/c5mh00299k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

收藏

页码：234 / 240

页数：7

相关论文

共 47 条

[1] LATTICE THERMAL CONDUCTIVITY OF DISORDERED SEMICONDUCTOR ALLOYS AT HIGH TEMPERATURES [J].

ABELES, B .

PHYSICAL REVIEW, 1963, 131 (05) :1906-&

[2] THE THERMAL CONDUCTIVITY OF SOME POLYCRYSTALLINE SOLIDS AT LOW TEMPERATURES [J].

BERMAN, R .

PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION A, 1952, 65 (396) :1029-1040

[3]

Berman R., 1976, THERMAL CONDUCTION S

[4] High-performance bulk thermoelectrics with all-scale hierarchical architectures [J].

Biswas, Kanishka ;

He, Jiaqing ;

Blum, Ivan D. ;

Wu, Chun-I ;

Hogan, Timothy P. ;

Seidman, David N. ;

Dravid, Vinayak P. ;

Kanatzidis, Mercouri G. .

NATURE, 2012, 489 (7416) :414-418

[5] III. Polycrystalline metals and the effect of cold work - The structure of a cold-worked metal [J].

Bragg, WL .

PROCEEDINGS OF THE PHYSICAL SOCIETY, 1940, 52 :105-109

[6] Geometrical considerations concerning the structural irregularities to be assumed in a crystal [J].

Burgers, JM .

PROCEEDINGS OF THE PHYSICAL SOCIETY, 1940, 52 :23-33

[7] Nanoscale thermal transport. II. 2003-2012 [J].

Cahill, David G. ;

Braun, Paul V. ;

Chen, Gang ;

Clarke, David R. ;

Fan, Shanhui ;

Goodson, Kenneth E. ;

Keblinski, Pawel ;

King, William P. ;

Mahan, Gerald D. ;

Majumdar, Arun ;

Maris, Humphrey J. ;

Phillpot, Simon R. ;

Pop, Eric ;

Shi, Li .

APPLIED PHYSICS REVIEWS, 2014, 1 (01)

[8] MODEL FOR LATTICE THERMAL CONDUCTIVITY AT LOW TEMPERATURES [J].

CALLAWAY, J .

PHYSICAL REVIEW, 1959, 113 (04) :1046-1051

[9] Note on the conduction of heat in crystals [J].

Casimir, HBG .

PHYSICA, 1938, 5 :495-500

[10] Size and interface effects on thermal conductivity of superlattices and periodic thin-film structures [J].

Chen, G .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1997, 119 (02) :220-229

← 1 2 3 4 5 →