Crystallite Size Broadening K九 B(20)= - 0.94元 B(28)= Lcose L cos 0 The Scherrer Equation(1918) Peak Width due to crystallite size varies inversely with crystallite size L (or D) as the crystallite size gets smaller,the peak gets broader The peak width varies with 0 The crystallite size broadening is most pronounced at large 20Crystallite Size Broadening • Peak Width due to crystallite size varies inversely with crystallite size L (or D) – as the crystallite size gets smaller, the peak gets broader • The peak width varies with  – The crystallite size broadening is most pronounced at large 2       cos 2 L K B  The Scherrer Equation (1918)      cos 0.94 2 L B 