Local structure of liquid and solid silver halides probed by XAFS.
Investigation of the local structure of the high-temperature liquid and solid phases in the 300-725 K range of AgBr has been performed using the x-ray absorption spectroscopy (XAS). Structural results are compared with existing diffraction studies and computer simulations demonstrating the reliability of the XAS technique in determining the short-range structure. Present results on solid AgBr are in agreement with known thermal expansion data. The short-range g(r) of liquid AgBr is reconstructed showing the unique insight provided by the XAS technique in measuring short-range atom-atom correlations in liquids.
Di Cicco
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INFM, Dip. di Mat. e Fisica, Universitá di Camerino, Italy. dicicco@campus.unicam.it
Taglienti
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Minicucci
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M
Filipponi
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A