Question

In the process of Czochralski method which of the following relation is appropriate between the melt and the growing crystals?

(a) Melt and the growing crystals are usually not related to each other

(b) Melt and the growing crystals are usually rotated counterclockwise

(c) Melt and the growing crystals are usually rotated clockwise

(d) Melt and the growing crystals are usually kept at a constant position

This question was posed to me by my college director while I was bunking the class.

My enquiry is from Growth of Single Crystals in chapter Preparative Methods of Solid State Chemistry

Answer 1

The correct answer is (b) Melt and the growing crystals are usually rotated counterclockwise

The best explanation: The melt and the growing crystals are usually rotated counterclockwise during pulling in the process of Czochralski, in order to maintain a constant temperature, melt uniformity, etc.