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| the principle of crystal growth |
The principle of crystal growth shown in Fig.
The raw material is placed iridium crucible, the radio-frequency induction heating coil heating material was melted in the crucible placed in the middle an iridium mold, by capillary action so that molten flatten the iridium mold top surface to form a thin film, put crystal the colors of the touch to the film, then the film of the end surface of the seed crystal and the seed crystal of the same crystal structure. Seed and then slowly pulled upward, gradually growing single crystals.
Meanwhile the supply of molten crucible supplementary film, because the film's edges defined by the iridium mold and play continued feeding for crystal growth, and therefore the feeding method is called defining edge film, referred to guide membrane.
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as guided modes.
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