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Figure 7
(a) Orientation dependence of the average contrast factor for screw dislocations in β-Ga2O3, shown as a function of the angle δ for several crystallographically distinct slip systems. (b) The same representation for edge dislocations, highlighting the strong anisotropy of 〈C〉hkl and the corresponding single-crystal values. The crystal structure is shown on the right, indicating the monoclinic unit cell and the unique b axis. (c) and (d) Reciprocal-space maps of 〈C〉hkl for φ = 0° (screw) and φ = 90° (edge), respectively, restricted to reflections with δ = 90°, i.e. scattering vectors lying in the a*c* plane. Only reflections associated with the 〈001〉{010} slip system are shown, with the colour scale representing the magnitude of the average contrast factor 〈C〉hkl.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 59| Part 5| October 2026|
https://doi.org/10.1107/S1600576726007053