Influence of through-window radiation on the horizontal Bridgman process for rectangular shaped GaAs crystals

Lie, K H; Hsu, Jung−Tsung; Guo, Yutong; Chen, T.P.

doi:10.1016/0022-0248(91)90179-9

Cited by 7 publications

(2 citation statements)

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“…• n ms ] on ∂D ms (5) and no-slip and no-penetration conditions on the boundary between the melt and boat (∂D bm ), as well as along the melt/crystal interface (∂D ms ):…”

Section: Governing Equationsmentioning

confidence: 99%

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Flow fields and interface shapes during horizontal Bridgman growth of fluorides

Brandon¹

1997

Modelling Simul. Mater. Sci. Eng.

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A two-dimensional analysis of horizontal Bridgman crystal growth is presented. Material properties are close to those of lithium calcium aluminium fluoride (LICAF), while operating parameters resemble, on average, those used during growth of fluorides via vertical techniques. Estimates of characteristic timescales, as well as a representative fully transient analysis, demonstrate the quasi-steady nature of heat transport and fluid flow in this system. Results obtained using a quasi-steady-state analysis show that both surface-tension-driven (Marangoni) and buoyancy-driven flow mechanisms have an important influence on the system's thermal field and melt/crystal interface shape. An interface whose curvature is significantly promoted by both flow mechanisms can be rendered relatively flat by modifying the furnace profile. In the uncommon case (existing in some materials, though not LICAF) where melt surface tension increases with increasing temperature Marangoni and buoyancy-driven flows may oppose each other, thus reducing melt/crystal interface deflection.

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“…• n ms ] on ∂D ms (5) and no-slip and no-penetration conditions on the boundary between the melt and boat (∂D bm ), as well as along the melt/crystal interface (∂D ms ):…”

Section: Governing Equationsmentioning

confidence: 99%

“…One of the advantages of this method involves the possibility of achieving direct viewing of the melt/crystal interface throughout the seeding and growth processes (see e.g. [5]). In addition, using an open boat may improve problems associated with thermal expansion mismatch between crystal and crucible material.…”

Section: Introductionmentioning

confidence: 99%