Observation of the vertex-rounding transition for a crystal in equilibrium: oxygen-covered tungsten

Details Observation of the vertex-rounding transition for a crystal in equilibrium: oxygen-covered tungsten Observation of the vertex-rounding transition for a crystal in equilibrium: oxygen-covered tungsten

2004-08-04

arxiv.org/abs/cond-mat/0408099v2

Physics

Condensed Matter

Statistical Mechanics

Experimental paper reporting microscopic observations, 4 pages, 3 figures. Phys. Rev. B, accepted for publication (2005)

Scientific paper

10.1103/PhysRevB.71.113416

Equilibrium crystal shape of oxygen-covered tungsten is followed as a
function of temperature using field ion microscopy. In the vicinity of the
(111) region, at the temperature $970\pm70$ K, the system undergoes a phase
transition from a polyhedral form (sharp edges and sharp vertex) to a rounded
form (sharp edges, rounded vertex).

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