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Nanoscale Thermal Property of Amorphous SiC: A Molecular Dynamics Study

  • Weiqiang Wang (a1), Rajiv K. Kalia (a2), Aiichiro Nakano (a3) and Priya Vashishta (a4)

Abstract

Thermal properties of amorphous silicon carbide (a-SiC) at nanometric scales are studied by molecular dynamics (MD) simulations based on an empirical interatomic potential. A scalable parallel MD algorithm is used for studying systems as long as 30nm. To validate the potential, phonon density of states and specific heat of a-SiC are first calculated. Size effects are studied, and errors are estimated for the temperature profile for different system sizes. Simulation time required to achieve steady temperature profiles is also determined. Finally the thermal conductivities of a-SiC at various temperatures are calculated. The results show that thermal conductivities of a-SiC at nanometric scale also agree with Slack's minimum thermal conductivity model.

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1. Yamada, K. and Mohri, M., in Silicon Carbide Ceramics -1 edited by Somiya, S. and Inomata, Y. (Elsevier, London, 1991)
2. Schmid, U., Eickhoff, M., Richter, C., Krotz, G., Schmitt-Landsiedel, D., Sens. and Act. A 94 87 (2001)
3. Cahill, D. G., Ford, W.K., Goodson, K.E., et al, J. Appl. Phys. 93 793 (2003) and the reference therein
4. Shimojo, F., Ebbsjo, I., Kalia, R.K., Nakano, A., Rino, J. P., and Vashishta, P., Phys. Rev. Lett. 84 3338 (2000)
5. Szlufarska, I., Kalia, R. K., Nakano, A. and Vashishta, P., App. Phys. Lett. 85 378 (2004)
6. Szlufarska, I., Kalia, R. K., Nakano, A. and Vashishta, P., App. Phys. Lett. 86 021915 (2005)
7. Szlufarska, I., Nakano, A., and Vashishta, P., Science 309 911 (2005)
8. Jund, P. and Jullien, R., Phys. Rev. B 59 13707 (1999)
9. Rino, J. P., Ebbsjo, I., Branicio, P. S., Kalia, R. K., Nakano, A., Shimojo, F. and Vashishta, P., Phys. Rev. B 70 045207 (2004)
10. Vashishta, P., Kalia, R. K., Nakano, A., Rino, J.P., J. Appl. Phys., in press
11. Nakano, A., Vashishta, P., and Kalia, R. K., ibid, 77 302 (1993)
12. Schelling, P. K., Phillpot, S. R., and Keblinski, P., Phys. Rev. B 65 144306 (2002)
13. Maiti, A., Mahan, G. D., and Pantelides, S. T., Solid Stat. Comm. 102 517 (1997)
14. Cahill, D. G. and Pohl, R. O., Phys. Rev. B 35 4067 (1987)

Keywords

Nanoscale Thermal Property of Amorphous SiC: A Molecular Dynamics Study

  • Weiqiang Wang (a1), Rajiv K. Kalia (a2), Aiichiro Nakano (a3) and Priya Vashishta (a4)

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