Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Low defect density diamond single crystal and a process for the production of the same










Image Number 2 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 1600.degree. C.








 
 
  Recently Added Patents
Resolution setting apparatus, resolution setting method, and recording medium recording a resolution setting program when a television is used as a monitor of a computer
Indexing, relating and managing information about entities
Liquid crystal display device
Biaxially oriented hydrolysis-stable polyester film comprising epoxidized fatty acid derivatives and a chain extender, and process for production thereof and use thereof
Passive millimeter wave differential interference contrast polarimetry
Multiple input multiple output transceiver
Method and computer system for automatic vectorization of a vessel tree
  Randomly Featured Patents
Reversing the effects of sequential reparameterization on traces
ECL output with Darlington or common collector-common emitter drive
Electromagnetic relay for high thermal load
Sea wave turbine speed control
Table
Method and apparatus for producing sequenced queries
Hydrostatic transmission gear drive disconnect
Burglar alarm and door chime
Device and method for sorting out metal fractions from a stream of bulk material
Touch screen liquid crystal display