PHOTOACOUSTIC MEASUREMENT AND MOLECULAR DYNAMICS SIMULATION FOR THERMAL CONDUCTIVITY OFAl0.3Ga0.7As

S. Chitra, A. Jalal, K. Ramachandran () and S. Rajagopal
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S. Chitra: Sri Parasakthi College for Women, Courtallam 627802, India
A. Jalal: Sadakathulla Appa College for Men, Tirunelveli 626011, India
K. Ramachandran: School of Physics, Madurai Kamaraj University, Madurai 625021, India
S. Rajagopal: School of Chemistry, Madurai Kamaraj University, Madurai 625021, India

International Journal of Modern Physics C (IJMPC), 2003, vol. 14, issue 01, 61-72

Abstract: The thermal conductivity ofAl0.3Ga0.7Asis studied using photoacoustic technique and molecular dynamics simulation. Tersoff's potential is used for the simulation, for the first time, to this alloy. Thermal conductivity, determined experimentally by photoacoustic technique using our experimental setup, agrees well with the molecular dynamics simulation and literature values. The results are compared with the host GaAs and the role of DX centers in thermal property is discussed.

Keywords: Photoacoustics; molecular dynamics simulation; Al0.3Ga0.7As; Tersoff's potential; thermal conductivity; thermal diffusivity (search for similar items in EconPapers)
Date: 2003
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DOI: 10.1142/S012918310300422X

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