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AssigneeDiamond Innovations, Inc.
InventorsMarl Philip D'Evelyn, Dong-Sil Park, Thomas Richard Anthony, Clifford Lawrence Spiro, Yue Meng, Christopher Allen Long
Estimating the term…
An element-doped diamond crystal is disclosed herein. The crystal includes at least one dopant element which has a greater concentration toward or near an outermost surface of the crystal than in the center of the crystal. The concentration of the dopant element is at a local minimum at least about 5 micrometers below the surface. The concentration-profile of the dopant element for these diamond crystals causes an expansion of the diamond lattice, thereby generating tangential compressive stresses at the surface of the diamond crystal. These stresses beneficially increase the compressive fracture strength of the diamond.
A three-dimensional faceted diamond crystal, comprising at least one dopant element which has a greater concentration toward or near an outermost surface of the crystal than in the center of the crystal, wherein the concentration of the dopant element is at a local minimum at least about 5 micrometers below the surface.
A three-dimensional faceted diamond crystal containing at least one dopant element, wherein the concentration of the dopant element is greater toward or near the outermost surface of the crystal than in the center of the crystal, said crystal being further characterized by a tangential compressive stress at a surface of said crystal of up to about 5000 megapascals.
A method of making a diamond crystal having a tangential compressive stress on a surface up to about 5000 megapascals, comprising the step of:
Dependencies are inferred from the claim text.