Structural instability and the metal–non-metal transition in expanded fluid metals
JNonCrystal_353_3348.pdf 1.13 MB
Acoustic properties and phonons
Liquid alloys and liquid metals
Diffraction and scattering measurements
Phases and equilibria
X-ray diffraction, small angle X-ray scattering and inelastic X-ray scattering measurements for fluid Hg in the wide density range up to the supercritical region have been carried out using synchrotron radiation at SPring-8. We obtained the static and dynamic structure factors as a function of temperature, pressure and density. Based on the results we found that there exist medium-range fluctuations accompanying the metal–non-metal transition in fluid Hg. The scale of the fluctuations was about 10 A in space and sub-picoseconds in time. We discuss the possibility that such structural instability induces the metal–non-metal transition in expanded fluid Hg.
Journal of Non-Crystalline Solids
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Copyright (c) 2007 Published by Elsevier B.V.
Graduate School of Integrated Arts and Sciences
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