Internal oxidation techniques were used to produce Cu/(111)MgO and Pd/(111)MgO interfaces with a cube-on-cube relationship. High-resolution transmission electron microscopy was used to study the interface structures. Localized interfacial dislocations were seen in both Cu/(111)MgO and Pd/(111)MgO interfaces. The atomic structures of these 2 metal/oxide interfaces were determined from through-focus series of high-resolution images. The terminating lattice plane in the interface was the O lattice plane, for both Cu/(111)MgO and Pd/(111)MgO interfaces, and was composed of distorted structural units of Cu2O or PdO, respectively. The junction dislocations resembled those in the grain boundary facets and were related to difference in the rigid body translations between 2 energetically equivalent {111} facets in the interfaces. The Burgers vector of the junction dislocation was (1/6)<112>, and a stacking fault in the soft metal matrix was found to accompany this junction dislocation.

F.R.Chen, L.Chang, S.K.Chiou, C.S.Hong: Materials Science Forum, 1995, 189-190, 373-80