Anisotropy of growth coefficient and surface harndess of the 4He crystals
Andreeva O. A. , Keshishev K. O., Osip'yan S. Yu.
This letter reports a continued study of the anisotropy of the equilibrium and kinetic properties of the surfaces of 4He crystals having an hep structure. The angular dependence of the surface hardness and that of the growth coefficient have been measured for several cross sections which pass through the basic symmetry elements of the crystal: the C6 and C2 axes.