Dear Apu, maybe, there is some physical meaning. But, in general, the strain field solutions from a Stephens model parameters are not unique. Stephens model has up to 15 parameters (triclinic), and the correlation matrice of the lattice parameters has up to 21 parameters (triclinic). One cannot determine 21 unique numbers from 15 parameters, in general.
Regards Joerg Bergmann, Dresden Am Freitag, den 27.10.2006, 16:33 +0500 schrieb [EMAIL PROTECTED]: > Dear All, > I am carying out Rietveld refinement of a deformed polycrystalline sample. WH > plot shows anisotropic broadening of the profile. If I incorporate Stephens > Model in GSAS, it improves the quality of the fit. > > Now my question is: > > In this case if I use the refined parameters (of Stephens model)to draw the > 3D-anisotropic strain field within the sample, does it carry any physical > meaning! > > Thanking you. > > With best regards, > Apu > > > > >
