THE (111) (100) INTERFACE IN CUBIC MATERIALS AND RELATED SYSTEMS/

The {111}/{100} interface in cubic materials is one of the most widely studied interfaces. This paper compiles the observations of this inte rface in a wide range of metal, semiconductor and ceramic systems prep ared by various processing techniques. The stability of the {111}/{100 } interface is critically studied using the present models for predict ing interfacial energy. Since this interface has been observed in a wi de variety of systems, it serves as a benchmark for predicting interfa ce stability in solids, in general. The mechanisms and models which ha ve been used tu explain why this interface is so common are found to b e very system specific, i.e. they are dependent on the process ing con ditions, chemistry and bonding at two surface, etc. However, the fact that low-index planes are parallel al this interface appears to be the important common factor favoring this intel face in all the different systems. Since the favorability of this interface does not depend on the interatomic bonding within the material, it is concluded that shor t-range interactions determine the stability of this interface.