dhkl= Lattice Spacing ; a = Lattice Constant ; h , k , l = Miller Indices;
h , k , l= Miller Indices ;
U=Lattice Energy ; NA= Avogadro Number ; M= Madelung Constant ; z+ & z- = Charge on the Cation & the Anion;
e = Change of an electron; n= Born Exponent ; r =Inter ionicDistance; εo = Permitivity of free Space;
n = An integer ; λ = Wavelength of the incident light ; dhkl= Lattice Spacing ; θ = Angle of incidence ;
d= Interplanar Spacing ; h , k , l = Miller Indices; a ,c = Lattice Constants
rsmaller= Radius of the smaller ion (usually the Cation) ; rbigger = Radius of the bigger ion (usually the Anion)