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Unformatted text preview: Theoretical Density = nA/Vc N A n = atoms/cell, A= atomic weight; Vc = volume of unit cell N A = Avagadross number d hkl = a/ (h 2 +k 2 +l 2 ) Bragg Diffraction : n = 2 d hkl sin = Diffraction angle; n= integer ; = wavelength N v = N exp (-Q/RT) [N v = vacancy concentration , N = total number of sites; Q =activation energy, T= temperature, R = gas constant]...
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- Fall '08