Diamond Materials Crystal plates
Single-Crystal CVD Diamond
Choose it when you need one continuous crystal with no grain boundaries.
Good to know
- Crystal orientation defines the working face and must be stated on the drawing.
- Electronic, optical and mechanical grades are distinguished by their impurity, defect and surface requirements.
- A polished plate alone does not establish optical or electronic performance.
Specifications
What we define for single-crystal CVD diamond, with units and how each is typically measured. We confirm values for your application in technical review.
Request the datasheetLook up a term in the glossaryDimensions & tolerances
| Parameter | Unit | Typical test method |
|---|---|---|
| Lateral size, outline or diameter, and tolerance | mm | Optical measurement |
| Thickness and tolerance (bulk or layer) | mm | Micrometer or optical gauge |
| Edge condition and chip limit | Microscopy inspection to drawing |
Crystal & purity
| Parameter | Unit | Typical test method |
|---|---|---|
| Face orientation, edge orientation and miscut | XRD or Laue diffraction | |
| Nitrogen content and detection limit | ppb or ppm | FTIR spectroscopy or SIMS |
| Inclusions, growth sectors and defects | Cross-polarised microscopy or birefringence imaging | |
| Growth sectors and internal strain | Cross-polarised microscopy or birefringence imaging | |
| Crystalline quality (rocking-curve width) | arcsec | XRD rocking curve |
| Raman linewidth of the diamond line | cm⁻¹ | Raman spectroscopy |
| Dislocation density | cm⁻² | X-ray topography or etch-pit counting |
Surface & finish
| Parameter | Unit | Typical test method |
|---|---|---|
| Surface roughness per side | nm Ra | Profilometry or AFM |
Material properties
| Parameter | Unit | Typical test method |
|---|---|---|
| Thermal conductivity grade | W/m·K | Laser flash (ASTM E1461) |
| Coefficient of thermal expansion (per temperature range) | ppm/K | Thermomechanical analysis (ASTM E831) |
Integration & packaging
| Parameter | Unit | Typical test method |
|---|---|---|
| Packaging, cleanliness and labelling | Per drawing | |
| Certificate of conformance and traceability | Supplier declaration |
Where it is used
Requirement to review
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