Abstract
By using the technique of electrostatic levitation, the Ni self-diffusion, density, and viscosity of liquid have been measured in situ with high precision and accuracy. The inverse of the viscosity, , measured via the oscillating drop technique, and the self-diffusion coefficient , obtained from quasielastic neutron scattering experiments, exhibit the same temperature dependence over 1.5 orders of magnitude and in a broad temperature range spanning more than 800 K. It was found that for the entire temperature range, contradicting the Stokes-Einstein relation.
- Received 20 July 2011
DOI:https://doi.org/10.1103/PhysRevLett.107.165902
© 2011 American Physical Society
Viewpoint
Reining in Diffusion in Dense Liquids
Published 10 October 2011
A new electrostatic levitation study clarifies how the strings and clusters of atoms that appear in a cooling molten liquid affect diffusion.
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