Resources Contact Us Home
Low defect density diamond single crystal and a process for the production of the same

Image Number 4 for United States Patent #5908503.

A colorless, transparent low defect density, synthetic type IIa diamond single crystal, in which the etch pits due to needle-shaped defects are at most 3.times.10.sup.5 pieces/cm.sup.2, and which can be applied to uses needing high crystallinity of diamond, for example, monochromators, semiconductor substrates, spectroscopic crystals in X-ray range, electronic materials, etc., is provided by a process for the production of the colorless, transparent low defect density, synthetic diamond single crystal by growing new diamond crystal on a seed crystal of diamond by the temperature gradient method which comprises using a crystal defect-free diamond single crystal, as a seed crystal of diamond, and optionally subjecting to a heat treatment in a non-oxidizing atmosphere at a low pressure and a temperature of 1100 to C.

  Recently Added Patents
Methods and system for providing drug pricing information from multiple pharmacy benefit managers (PBMs)
Systems and methods for parameter adaptation
Systems and methods for updating a data store using a transaction store
Semiconductor device
Electromagnetic shield for a passive electronic component in an active medical device implantable lead
Haworthia plant named `AMSTERDAM`
Method of manufacturing pipe with branch
  Randomly Featured Patents
Skid control system
Support arrangement for motor vehicles
Work-station organizer for supporting paper articles
Apparatus for measuring the thickness of corneas
Computer implemented method of generating and displaying objectives from pros and cons for evaluating decision alternatives
Method and system for encoding signatures to authenticate files
Sprayer bottle
Single loop tractioned winch-like device
Lash adjuster for valve gear
Three-dimensionally localizing light emitting molecules of unknown orientation and unknown Z-position