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US 8,574,535 B2Granted
Diamond
AssigneeElement Six Limited
InventorsCarlton Nigel Dodge, Raymond Anthony Spits
Life of this patent
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Abstract
The present invention relates to an HPHT method for synthesizing single crystal diamond, wherein a single crystal diamond seed having an aspect ratio of at least 1.5 is utilized. Single crystal diamond seeds having an aspect ratio of at least 1.5 and synthetic single crystal diamond which may be obtained by the method recited are also described. The growth surface is substantially aligned along a <100> or <110> direction in the plane of the growth surface.
Claims10
An as-synthesized high pressure high temperature
- (HPHT) synthetic single crystal diamond material having an as-synthesized aspect ratio of at least 1.5 on a notional surface S#,
- a longest dimension a# substantially aligned along either a <100> or <110> direction, and
- a seed face substantially parallel to either a {100} or {110} plane and substantially parallel to surface S#;
- wherein the aspect ratio of the as-synthesized diamond crystal is defined as A#/B# wherein A# and B# define the notional surface S# in the as-synthesized high pressure high temperature (HPHT) synthetic single crystal diamond material substantially parallel to either the {100} or the {110} plane which is substantially parallel to the seed face of the as-synthesized single crystal diamond material, A# is the longest dimension of the as-synthesized high pressure high temperature (HPHT) synthetic single crystal diamond material within the surface S# substantially aligned along a <100> or <110> direction, and B# is the longest dimension of the as-synthesized high pressure high temperature (HPHT) synthetic single crystal diamond material orthogonal to A# within the surface S#, substantially aligned along a <100> or <110> direction;
- and
- wherein the longest dimension a# of the as-synthesized high pressure high temperature (HPHT) synthetic single crystal diamond material substantially parallel to the surface S# is at least 6 mm.
3 more elements
Dependencies are inferred from the claim text.