zone melting

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Related to Float zone process: Czochralski process

zone melting

or zone refining
n.
A purification technique for crystalline substances in which a heating system passes slowly over a bar of the material to be refined, creating a molten region that carries impurities with it across the bar.
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References in periodicals archive ?
The so-called granular float zone process constitutes a further development of the conventional float zone process and opens interesting technological perspectives in the special performance wafers market.
The alternative float zone process involves melting a polycrystalline silicon ingot zone by zone with an induction coil; the narrow molten zone is then brought into contact with a seed crystal.
Georg Raming modified the float zone process so that granular silicon can be used instead of silicon ingots whose production is resource intensive.