| ATOMIC RELAXATION IN MIXED-VALENT SYSTEMS DEDUCED FROM EXAFS SPECTROSCOPY (1986) | |||||||||||||||
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| We will present how it is possible, from EXAFS spectroscopy, to estimate atomic relaxation effects even in homogeneous mixed valent compounds, for which these relaxations are known to be very small. EXAFS experiments, analysed by our procedure, can then be used to decide if the ground state is homogeneous or inhomogeneous. At least, the procedure will be applied to the TmxSe system. We conclude that the homogeneous character of the mixed valent state is preserved in the non-stoichiometric compounds. | |||||||||||||||
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