Crystal growth from molten zone

摘要

In a crystal growth process in which starting material is fed to a heated molten zone and, after melting, is deposited in crystalline form on a substrate, the novelty is that the molten zone is stabilised mechanically by (a) a boundary wall which is fixed w.r.t. the zone; (b) a base which is movable w.r.t. the wall; and (c) a meniscus located between the base and the wall. Also claimed is a crystal growth appts. (2) including the wall (89), the base and the meniscus (94) described above.