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

Andrzej Szczepkowicz·Robert Bryl
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Abstract

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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Andrzej Szczepkowicz, Robert Bryl. 2005-02-01. Observation of the vertex-rounding transition for a crystal in equilibrium: oxygen-covered tungsten. https://doi.org/10.1103/physrevb.71.113416

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