CORRELATION OF NEAREST NEIGHBOUR DISTANCE AND BONDING PARAMETERS OF EXAFS OF SOME Mn AND Co SYSTEMS

摘要

Analysing the EXAFS of several Mn and Co systems, the absorbing atom phase shift α and backscattering amplitude phase shift β are evaluated. It is shown that the parameters α and β vary linearly with the nearest neighbour distance, R, except in the systems CoCl_2 · 6H_2O, MnSO_4 · H_2O and MnF_2. The nearest neighbour distance, R, in the complicated systems like smaltite and braunite minerals was also determined. The values are close to the crystallographic values.