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Tuesday, 22 March 2016

Point Defects

          The defects which take place due to imperfect packing of atom during crystallization are known as point defects. The point defect also takes place due to vibrations of atoms at high temperatures, quenching, by severe deformation of the crystal lattice; e.g., By hammering or rolling. Point imperfections are completely local in effect, e.g., A vacant lattice site. Point defects are always present in crystals and their present results in a decrease in the free energy.

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