Figure 9
Diffraction data collected from the sample in transmission geometry and the inferred lattice orientation. The location where the diffraction pattern shown in (a) was collected is indicated by the red spot in (b), which is the view of the sample as seen from the camera via the 90° mirror. The scale bar is 0.5 mm. A higher-quality image observed by a polarized microscope is shown in (c) for comparison. Only one diffraction peak was observed in (a), indicating the single-crystalline nature of the sample. The orientation of the in-plane projection of the reciprocal vectors, as well as that of the unit vectors a and b, can be inferred from the location of the (−1 −2 1) peak, as shown in (a) and (b). |