 finite step widths of 0.00 and 0.0° for 0Θ and Φ, respectively. The bar between ΔΦ = ±0.0° marks approximately the Φ range within which the measurements shown in Fig. 0[▶](#fig0){ref-type="fig"} were performed.](j-00-00000-fig0){#fig0}  ![0Θ--Φ mapping of the Si 000 reflection near the \[000\] in-plane direction measured 