THE RELATIONSHIP BETWEEN CRYSTAL MISORIENTATION AND CONDUCTIVE MODE CONTRAST OF GRAIN-BOUNDARIES IN ADDITIVE-FREE ZINC-OXIDE

Grain boundaries in additive-free ZnO show different types of conducti ve mode contrast, depending on the electrical properties. Electron bea m scattering patterns have been used to determine the misorientation o f grain boundaries showing certain types of conductive mode contrast i n order to correlate electrical properties with grain-boundary structu re. No correlations were apparent using the coincident-site lattice mo del, but other criteria suggest that grain-boundary electrical propert ies may be crystallographically controlled. More detailed analysis wil l require the full determination of the grain-boundary plane.