Surface melting is by now a well established disordering phenomenon,
occuring especially at the non-close-packed surfaces
of metals and essentially on all surfaces of rare-gas solids and molecular
Surface melting occurs at temperature very close to bulk melting point
For surfaces exhibiting premelting, a quasi-liquid layer (QLL) coats
the solid-vapor interface lowering the total interfacial free energy.
As temperature further increases toward Tm, such QLL may or may not
diverges. The former is called complete surface
melting while the latter is called blocked surface melting.
Surface melting is very sensitive to the long-range interatomic
interactions. The scaling of the thickness of the QLL is directly
related to the power (or exponent) of the interatomic potential.
To learn more, you may want check
some of the
pioneering studies of surface melting.
The self diffusion on melting surface is particularly
interesting, because of the important effect of the
underlying crystalline periodic potential. Thus one would
expect the atoms in the molten surface layer to reflect even in their
diffusive behaviour the characteristics
of the crystalline surface, such as discrete crystalline symmetry,
to learn more, you may want check
some of the
pioneering studies of diffusion on melting surfaces.
- To see studies on ceramic materials, please click
- To see studied on electronic materials, please click
- Here are some
you may want check out
- To see other metalic materials, please click
- To return to the home page or look other research activities,