On the possibility of ZnO-based quasi-bicrystal structure preparation

We present the first results of the two-step growth of the quasi-bicrystal structures containing interblock boundaries in epitaxial zinc oxide layers on alpha -sapphire. Using the intermediate buffer layer technique we have successfully prepared highly oriented layers of(11 (2) over bar0)ZnO and (0001)ZnO with clearly pronounced boundaries between blocks on the same (10 (1) over bar2)Al2O3 substrate surface. The high quality of the quasi-bicrystal structures was confirmed by x-ray diffraction and reflected high-energy electron diffraction measurements.