Record Details

Thermoelectric transport and microstructure of optimized Mg2Si0.8Sn0.2

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Thermoelectric transport and microstructure of optimized Mg2Si0.8Sn0.2
 
Creator DE BOOR, J
GUPTA, S
KOLB, H
DASGUPT, T
MULLER, E
 
Subject LATTICE VIBRATION FREQUENCIES
MAGNESIUM SILICIDE
ELASTIC CONSTANTS
MG2SI
FABRICATION
 
Description Solid solutions of magnesium silicide and magnesium stannide exhibit excellent thermoelectric properties due to favorable electronic band structures and reduced thermal conductivity compared to the binary compounds. We have optimized the composition Mg2Si0.8Sn0.2 by Sb doping and obtained a thermoelectric figure of merit close to unity. The material comprises of several phases and exhibits intrinsic nanostructuring. Nevertheless, the main features of electronic transport can be understood within the framework of a single parabolic band model. Compared to Mg2Si we observe a comparable power factor, a drastically reduced thermal conductivity and an increased effective mass.
 
Publisher ROYAL SOC CHEMISTRY
 
Date 2016-01-15T07:31:54Z
2016-01-15T07:31:54Z
2015
 
Type Article
 
Identifier JOURNAL OF MATERIALS CHEMISTRY C, 3(40)10467-10475
2050-7526
2050-7534
http://dx.doi.org/10.1039/c5tc01535a
http://dspace.library.iitb.ac.in/jspui/handle/100/18057
 
Language en