Oxygen-covered tungsten crystal shape: time effects, equilibrium, surface energy and the edge-rounding temperature

Details Oxygen-covered tungsten crystal shape: time effects, equilibrium, surface energy and the edge-rounding temperature Oxygen-covered tungsten crystal shape: time effects, equilibrium, surface energy and the edge-rounding temperature

2011-04-08

arxiv.org/abs/1104.1598v1

Physics

Condensed Matter

Statistical Mechanics

8 pages, 10 figures, submitted for publication

Scientific paper

The equilibrium crystal shape (ECS) of oxygen-covered tungsten micricrystal is studied as a function of temperature. The specially designed ultrafast crystal quenching setup with the cooling rate of 6000 K/s allows to draw conclusions about ECS at high temperatures. The edge-rounding transition is shown to occur between 1300 K and 1430 K. The ratio of surface free energies $\gamma(111)/\gamma(211)$ is determined as a function of temperature.

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