ANHARMONICITY IN AGBR EXAFS

EXAFS data in the temperature range 18 to 120 K were analysed using th eoretical phases and three asymmetric model radial distribution functi ons: two Gaussian convolution models and a simple asymmetric Gaussian model. The convolution models were unable to reproduce the experimenta l phase shifts, whereas the latter gave good agreement. The results ar e compared with those from cumulant analyses. Multiple scattering anal yses for the 18 and 120 K data using this model are also presented.