| 摘要 |
FIELD: physics.SUBSTANCE: when drawing, linear displacement of the crystal is carried out at a rate of 0.6-0.9 mm/min in cycles, wherein monocrystals are drawn from a melt upwards, followed by lowering the monocrystal into the melt. The ratio of linear displacement upwards and downwards is 2:1. The value of absolute displacement upwards h in one cycle is calculated using a mathematical formula of the ratio of the crucible diameter to the crystal diameter, in mm: h is less than or equal to 1.5D/D.EFFECT: method enables to obtain germanium crystals with a low dislocation density.4 ex |
