Book Notes-Crystal Growth

Book Notes-Crystal Growth - CrystalGrowth StructuralDefects...

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Crystal Growth Structural Defects Point Defects o Atoms out of correct position o Higher for cystals grown at high temps o Schottky Defects Vacany defects Doesn’t influence stoichiometry of mineral o Frenkel Defects Mislocation defects Cations more commonly involved b/c smaller o Impurity Defects Interstitial- foreign occupy sites not normally used in crystal Substiution- sub for one of normally present ions High temps allow more impurities Line Defects o o Dislocation lines- edges of propagating slip surface (bonds broken) o Edge Dislocation Buerger’s Vector- right angles to dislocation line o Screw Dislocation Buerger’s vector parallel to dislocation line Planar Defects o Mismatch of crystal structure  across a surface
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o Grain Boundaries
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This note was uploaded on 09/26/2010 for the course GEO 416k taught by Professor Staff during the Fall '08 term at University of Texas at Austin.

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Book Notes-Crystal Growth - CrystalGrowth StructuralDefects...

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