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A numerical study of thermal conditions in the THM growth of HgTe by M.C Martı́nez-Tomás; V Muñoz-Sanjosé; C Reig is a Engineering article available to read on EtoBox.

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A numerical simulation of the travelling heater method (THM) process in the growth of HgTe is carried out. The whole system (furnace, ampoule and charge) is taken into account in the frame of a quasi-steady-state model. The mass conservation condition for the solute in the liquid zone permits the determination of the rate of advance of the crystallisation isotherm as a function of the heater position. We claim to study the evolution of different magnitudes along the growth process, searching for the physical reasons which could be at the origin of defects in the form of thin layers observed in some growing experiences. To solve the governing equations of fluid flow, heat transfer and mass transport we have made use of a commercial code which can run in a PC. The simulation is made by using a three-level strategy, which allows the reduction of the computational effort. In the first level, heat transport is assumed to be by conduction, convection and radiation between the furnace and the ampoule, and by conduction through the ampoule wall, coating, solid and liquid zones. The temperature calculated at this level in the air/ampoule boundary is used as boundary condition for the second

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Author

M.C Martı́nez-Tomás; V Muñoz-Sanjosé; C Reig

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-0248)

Published

2002

Language

EN

Field

Engineering (Physical Sciences)