Diamond Materials Single-crystal material
HPHT Single-Crystal Diamond
Single-crystal diamond from high-pressure synthesis, for when you want a non-CVD route.
Good to know
- Material type and impurity content must be distinguished from growth method.
- Crystal orientation is relevant when preparing precision tool blanks.
- Requirements for optical or electronic use need their own material qualification.
Specifications
What we define for HPHT single-crystal 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 |
|---|---|---|
| Crystal type, grade and grain size | Raman spectroscopy or microscopy | |
| Face orientation, edge orientation and miscut | XRD or Laue diffraction | |
| Inclusions, growth sectors and defects | Cross-polarised microscopy or birefringence imaging | |
| Nitrogen content and detection limit | ppb or ppm | FTIR spectroscopy or SIMS |
| 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 |
| Colour-centre species and concentration | ppb | EPR or photoluminescence spectroscopy |
Surface & finish
| Parameter | Unit | Typical test method |
|---|---|---|
| Surface finish condition (as-grown, lapped or polished) | Visual inspection to drawing | |
| Surface roughness per side | nm Ra | Profilometry or AFM |
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
Have a material requirement? Let’s review it.
Share your HPHT single-crystal diamond requirement, dimensions and drawing for review.