Premium
Growth of BiSbTe 3 ‐Mixed Crystals using a Bridgman Configuration of the TITUS Furnace ‐ Numerical Simulation of Convection and Segregation
Author(s) -
Seifert W.,
Reinshaus P.
Publication year - 1999
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/(sici)1521-4079(199904)34:4<467::aid-crat467>3.0.co;2-2
Subject(s) - buoyancy , convection , temperature gradient , mechanics , thermal , combined forced and natural convection , materials science , flow (mathematics) , transient (computer programming) , heat transfer , crystal growth , boundary (topology) , thermodynamics , natural convection , physics , meteorology , mathematics , mathematical analysis , computer science , operating system
A standard Bridgman configuration of the TITUS facility was used to grow BiSbTe 3 ‐mixed crystals at normal and at reduced gravity. The growth experiments in space, including a dynamical registration of the temperature distribution of the furnace, were performed during the MIR'97 mission. The transient temperature profiles have been analysed to get thermal boundary conditions for numerical simulations of convection and segregation with the FEM package FIDAP. The calculations have been done within the frame of a 3D model close to the real growth conditions. The aim of the paper is to discuss the resulting Buoyancy driven flow configuration in the melt and its influence on the radial and axial segregation depending on the gravity level.