Question

Define zone refining

Answer 1

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Zone refining is a method of purifying a crystalline solid, typically a semiconductor or metal, by causing a narrow molten zone to travel slowly along an otherwise solid rod or bar to one end, at which impurities become concentrated.

Answer 2

Here is your answer....

A technique for producing solids of extreme purity, esp for use in semiconductors. The material, in the form of a bar, is melted in one small region that is passed along the solid. Impurities concentrate in the melt and are moved to the endof the bar.

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