To all, Does anyone know if the crystallite size of a film is different for different indices of reflection? In other words, if I calculate the crystal size for a hkl = 110 reflection and for a hkl=001 reflection on MgO; am I supposed to the the same result using Schemer's equation (i.e. CS = k*lambda/FWHM * cos(theta))? Thanks to all, -- EVELYN BENABE Graduate Research Assistant RF Microsystems Research Group University of South Florida 4202 East Fowler Avenue Tampa, FL 33620 Office: ENB 412 Office Phone: (813)-974-4851