Local structures of AgBr
x
Cl1-x
solid solutions were investigated by means of Br K-edge EXAFS spectroscopy with the Br composition x varying from 0.05 to 1. The virtual crystal approximation did not hold as in other solid solutions investigated previously, although the Br-Ag bond distance noticeably varies with x. It was found for the first time that the x dependence of the Br-Ag distance is more significant at lower temperature than at room temperature. Such a new finding can be explained by the suppression of the long-range force with increasing temperature, compared with the short-range force.
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