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Title: Thermal properties of Nb{sub 2}SnC

Abstract

In this article we report on the thermal properties of the ternary carbide Nb{sub 2}SnC. Its heat capacity, c{sub p}, is 75 J/molK at ambient temperatures and increases to {approx}115 J/molK at 1300 K. Analysis of c{sub p} measurements in the 4--15 K temperature range yields a Debye temperature of 324 K and a density of states at the Fermi level of 2.66 (eVunit cell)-1. At room temperature, the thermal conductivity is 17 W/mK and it increases to {approx}31 W/mK at 1500 K. At temperatures greater than 600 K, roughly 85% of the heat is transported by electronic defects (i.e., electrons and/or holes). The thermal properties of Nb{sub 2}SnC are quite comparable to those of near-stoichiometric NbC{sub x}.

Authors:
; ; ; ; ;
Publication Date:
Sponsoring Org.:
(US)
OSTI Identifier:
40204961
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 88; Journal Issue: 11; Other Information: DOI: 10.1063/1.1315326; Othernumber: JAPIAU000088000011006313000001; 028022JAP; PBD: 1 Dec 2000; Journal ID: ISSN 0021-8979
Publisher:
The American Physical Society
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMBIENT TEMPERATURE; CARBIDES; DEBYE TEMPERATURE; DEFECTS; ELECTRONS; FERMI LEVEL; PHYSICS; SPECIFIC HEAT; THERMAL CONDUCTIVITY; THERMODYNAMIC PROPERTIES

Citation Formats

Barsoum, M W, El-Raghy, T, Porter, W D, Wang, H, Ho, J C, and Chakraborty, S. Thermal properties of Nb{sub 2}SnC. United States: N. p., 2000. Web. doi:10.1063/1.1315326.
Barsoum, M W, El-Raghy, T, Porter, W D, Wang, H, Ho, J C, & Chakraborty, S. Thermal properties of Nb{sub 2}SnC. United States. doi:10.1063/1.1315326.
Barsoum, M W, El-Raghy, T, Porter, W D, Wang, H, Ho, J C, and Chakraborty, S. Fri . "Thermal properties of Nb{sub 2}SnC". United States. doi:10.1063/1.1315326.
@article{osti_40204961,
title = {Thermal properties of Nb{sub 2}SnC},
author = {Barsoum, M W and El-Raghy, T and Porter, W D and Wang, H and Ho, J C and Chakraborty, S},
abstractNote = {In this article we report on the thermal properties of the ternary carbide Nb{sub 2}SnC. Its heat capacity, c{sub p}, is 75 J/molK at ambient temperatures and increases to {approx}115 J/molK at 1300 K. Analysis of c{sub p} measurements in the 4--15 K temperature range yields a Debye temperature of 324 K and a density of states at the Fermi level of 2.66 (eVunit cell)-1. At room temperature, the thermal conductivity is 17 W/mK and it increases to {approx}31 W/mK at 1500 K. At temperatures greater than 600 K, roughly 85% of the heat is transported by electronic defects (i.e., electrons and/or holes). The thermal properties of Nb{sub 2}SnC are quite comparable to those of near-stoichiometric NbC{sub x}.},
doi = {10.1063/1.1315326},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 11,
volume = 88,
place = {United States},
year = {2000},
month = {12}
}