ANALYSIS OF THE DIAMETRAL RESPONSE OF A CZOCHRALSKI CRYSTAL(III) - SOLUTION OF THE EQUATION SET - TRANSFER-FUNCTIONS

The paper is the third in a series which presents results on the small -signal diametral response of a Czochralski crystal grown in a resisti vely heated furnace to variations in heater temperature and pull rate. For typical growth conditions and a wide range of materials it has be en shown that this response is obtained by solving a set of linear dif ferential equations. Conditions for normal response, i.e. the diameter increasing on heater temperature and/or pull rate decrease, have been established and shown to hold for most practical cases. The transfer function obtained is consistent with previous results for an inductive ly heated growth apparatus.