Using laser ablation CeO2 and YBa2Cu3O7−d layers have been deposited on (100) oriented MgO substrates for the creation of bi-epitaxial grain boundary weak links. X-Ray Diffraction measurements were used to measure the (in-plane) orientations of the layers. The CeO2 layer has been structured using Ar ion beam etching or CaO lift off. Using these two structuring techniques it is possible to obtain two different grain boundary weak link angles: 18 and 27 degrees. Up till now only 45 degrees weak link angles have been reported in literature, using templates for the creation of these grain boundaries.
IJsselsteijn, R. P. J., Hilgenkamp, J. W. M., Eisenberg, M., Vittoz, C., Flokstra, J., & Rogalla, H. (1993). Bi-epitaxial template grain boundaries with different in-plane angles on (100) MgO substrates. Journal of alloys and compounds, 195, 231-234. https://doi.org/10.1016/0925-8388(93)90727-5