Disk-driven flows and interface shape in vertical Bridgman growth with a baffle

In vertical Bridgman (VB) systems, the shape of S-L interface greatly influences yield and perfection single crystal, because continuous contact with crucible. The melt flows are difficult to modify control. Baffles flow-directing or obstructing devices. VB melts, baffles disk shaped, positioned horizontally above solid-liquid (S-L) interface. role baffle is to: i) minimize thermally-driven convection ii) control/reduce axial heat transfer iii) generate disk-driven flows. Furthermore, acts as a partition, splitting into: growth below feeding baffle. Forced practical alternative less feasible reliable option completely eliminating unsteady Czochralski (CZ) process, flow driven by crystal rotation key control parameter which process lacks. Baffle brings CZ-like into process. optimal for various scientific engineering applications laminar boundary layers at surface steady have uniform thickness. thermal conductivity its rate dominate thus crystals. Under rotating baffle, effects natural can be made negligible in production size melts.