Morphological instability of steps during crystal growth from solution flow

Interfacial Mass Transfer and Morphological Instability of Oxide Crystal Growth

Reversing radial segregation and suppressing morphological instability during vertical Bridgman crystal growth by rotation

During vertical Bridgman growth of an alloy crystal, local accumulation of solute at the interface center due to buoyancy often causes formation of a deep depression or pit and accelerates morphological instability. Through visualization of the freezing interface during directional solidification of succinonitrile containing ethanol on a rotating table, it was shown that rotation about the ampo...

On Segregation during Crystal Growth from a Solution Zone

The distribution in a niixed crystal A1-,B,C grown from an either (A, B)-rich or C-rich solution zone (e.g. travelling heater method or related techniques) is to be described by PFANN’S zone melting function which depends on the segregation coefficient and a characteristic length. Using pseudobinary mole fractions x the characteristic length of the distribution function is not the actual length...

From atoms to steps: the microscopic origins of crystal growth

The Burton-Cabrera-Frank (BCF) theory of crystal growth has been successful in describing a wide range of phenomena in surface physics. Typical crystal surfaces are slightly mis-oriented with respect to a facet plane; thus, the BCF theory views such systems as composed of staircaselike structures of steps separating terraces. A continuous density of adsorbed atoms (adatoms) diffuses on the terr...

Morphological instability during directional epitaxy

We consider the stability of a single step during epitaxial growth of a monolayer on a continuously supplied substrate in the presence of an imposed gradient in the deposition rate along the direction of growth. This allows control of instabilities that arise from asymmetries in the supply of atoms attaching from the upper and lower side of the step. We consider both a linear stability analysis...