"Enhanced thermoelectric performance of Half Heulser and Silicon Germanium, and calculation on lattice thermal conductivity with Effective Medium Approach"

Wu, Di

"Enhanced thermoelectric performance of Half Heulser and Silicon Germanium, and calculation on lattice thermal conductivity with Effective Medium Approach" 819 views

Author

Wu, Di, Physics - Graduate School of Arts and Sciences, University of Virginia

Advisors

Poon, Joseph , Department of Physics , University of Virginia

Abstract

Nanostructured Half Heusler alloys MNiSn, MCoSb (M=Hf, Zr and Ti) and SiGe nanocomposites were synthesized with high energy vibrational ball mill, followed by spark plasma sintering (SPS) consolidation. The thermoelectric properties were measured from room temperature to 1100K, the dependence of thermoelectric properties on consolidation parameters and microstructures were investigated. A differential effective medium (DEM) model was also developed to evaluate the lattice thermal conductivity in heterogeneous two-phase systems.

Degree

PHD (Doctor of Philosophy)

Keywords

thermoelectric; Half Heusler; Silicon Germanium; nanostructure; Differential Effective Medium

Language

English

Rights

Issued Date

2013-09-03

Persistent Link

https://doi.org/10.18130/V31R53

Suggested Citation

Wu, Di. "Enhanced thermoelectric performance of Half Heulser and Silicon Germanium, and calculation on lattice thermal conductivity with Effective Medium Approach". University of Virginia, Physics - Graduate School of Arts and Sciences, PHD (Doctor of Philosophy), 2013-09-03, https://doi.org/10.18130/V31R53.

Files

Dissertation Di Wu.pdf

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