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Re: A certain lack of knowledge

Last time I looked a periodic table, Copper was still clearly a metal and Si one of the non metals ay towards the right side, just before the gasses. Crystalline boundaries are where in most metals, the impurities collect, and in crystal propagation generally there are fewer impurities within the crystal latticework. However since most silicon is doped (impurities added for their electrical properties) and the doping needs to disytributed fairly accurately and evenly, and most electrolytic metals are preferred in their most elemental pure forms, there are differences in their purification processes. Metallic copper can be considered a crystalline structure in its pure state and one means is to simply purify the metal. The silicon needs special temperature and,IIRC, pressure controls to create the specially doped crystals.

But of course you are familiar with all of this.


Stu

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