X-ray reflectivity of chemically vapor-deposited diamond single crystals in the Laue geometry
- Resource Type
- Authors
- Thomas Krawczyk; Jacob Ruff; Kenneth D. Finkelstein; Stanislav Stoupin
- Source
- Acta Crystallographica Section A Foundations and Advances. 74:567-577
- Subject
- 010302 applied physics
Materials science
Misorientation
Scattering
Diamond
Geometry
02 engineering and technology
Chemical vapor deposition
engineering.material
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Biochemistry
Inorganic Chemistry
Crystal
X-ray reflectivity
Reflection (mathematics)
Structural Biology
0103 physical sciences
engineering
General Materials Science
Physical and Theoretical Chemistry
0210 nano-technology
Beam (structure)
- Language
- ISSN
- 2053-2733
The absolute X-ray reflectivity of chemically vapor-deposited (CVD) single-crystal diamond plates was measured in the Laue geometry in the double-crystal non-dispersive setting with an asymmetric Si beam-conditioner crystal. The measurements were supplemented by rocking-curve topography. The measured reflectivity curves are examined in the framework of the Darwin–Hamilton approach using a set of two independent parameters: the characteristic thickness of mosaic blocks and their average angular misorientation. Owing to strong extinction effects, the width of the reflectivity curves does not directly represent the average misorientation of the blocks. Two different sets of parameters were found for the 111 asymmetric reflection in the two different scattering configurations (beam compression and beam expansion). Analysis of the rocking-curve topographs shows that this discrepancy can be attributed to inhomogeneity of the diamond crystal microstructure.