Magnetically damped convection and segregation in Bridgman growth of PbSnTe

Yao, Minwu; Chait, Arnon; Fripp, A. L.; Debnam, W. J.

doi:10.1016/s0022-0248(96)00844-5

Cited by 22 publications

(7 citation statements)

References 19 publications

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“…5b and c are similar to the 2D results by Arnold et al [22] in a microgravity condition. The feasibility of using magnetic "elds to suppress the induced convection was investigated by Yao et al [9] for the growth of PbSnTe, and more than 30 kG of magnetic "eld was found necessary to achieve a nearly di!usion-controlled segregation. In fact, using steady ampoule rotation, which is much simpler, can be e!ective as well.…”

Section: Ampoule Tiltingmentioning

confidence: 99%

Influence of ampoule rotation on three-dimensional convection and segregation in Bridgman crystal growth under imperfect growth conditions

Lan

Liang

Chian

2000

Journal of Crystal Growth

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Section: Ampoule Tiltingmentioning

confidence: 99%

Influence of ampoule rotation on three-dimensional convection and segregation in Bridgman crystal growth under imperfect growth conditions

Lan

Liang

Chian

2000

Journal of Crystal Growth

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“…Extensive simulation efforts have been made to investigate the effects of VMF in VB/VGF crystal growth: from two-dimensional models [44,48,49] to more complex threedimensional (3D) models [50]. All these models have shown the potential of the VMF to suppress the buoyancy convection and to achieve a diffusion control limit.…”

Section: Bridgman Methods and Vertical Gradient Freezementioning

confidence: 99%

Flow Control by Magnetic Fields during Crystal Growth from Melt

Vizman

2015

Handbook of Crystal Growth

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“…The governing equations are modeled by the so-called induction-free magnetohydrodynamic (MHD) approximation, which neglects all induced fields (magnetic and=or electrical), as discussed in [8] and [9]. This allows the MHD effects of the imposed fields to be expressed solely through the source terms such as the Lorentz force in the momentum equations and the Joule heating in the energy equation.…”

Section: Governing Equationsmentioning

confidence: 99%

Numerical Solution of Melting in Side-Heated Rectangular Enclosure Under Electromagnetically Simulated Low Gravity

Gonçalves

Faghri

Asako

et al. 2005

Numerical Heat Transfer, Part A: Applications

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Transport phenomena associated with melting of gallium inside a side-heated rectangular enclosure under electromagnetically simulated low-gravity environment has been numerically investigated. Electromagnetic fields are configured such that the resulting Lorentz force can be used to damp and=or counteract the natural convection and thereby simulate the low-gravity environment of outer space. The governing equations are discretized using a control-volume-based finite-difference scheme. The solutions are obtained for true low gravity as well as for the simulated low-gravity environment. The results show that when the Lorentz force is due to the presence of m2agnetic field alone, the low-gravity condition is simulated by the damping effect, which is shown to have a profound effect on the flow field. On the other hand, it is shown that under electromagnetic field simulation when the Lorentz force is caused by transverse electric and magnetic fields, it is possible to minimize the flow field distortion caused by the high magnetic field and therefore achieve a much better simulation of low gravity. Furthermore, it is found that under electromagnetic simulation of low gravity it is possible to achieve flow reversal when the electromagnetic force is greater than the gravitational force. More important, it is found that the flow reversal is preceded by a transition mechanism driven by thermoelectromagnetic convection, which leads to breakup of the natural-convection flow patterns.

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Magnetically damped convection and segregation in Bridgman growth of PbSnTe

Cited by 22 publications

References 19 publications

Influence of ampoule rotation on three-dimensional convection and segregation in Bridgman crystal growth under imperfect growth conditions

Influence of ampoule rotation on three-dimensional convection and segregation in Bridgman crystal growth under imperfect growth conditions

Flow Control by Magnetic Fields during Crystal Growth from Melt

Numerical Solution of Melting in Side-Heated Rectangular Enclosure Under Electromagnetically Simulated Low Gravity

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