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Title: Diamonds

Abstract: The invention is founded on the discovery that type IIb diamond which has been rendered electrically non-conductive by being subjected to radiation capable of inducing atomic displacements becomes electrically conductive again when subjected to ionizing radiation. The invention thus provides a method of causing an electrical current to flow through a body of type IIb diamond which has been subjected to radiation capable of inducing atomic displacements by applying an electrical potential across the body and exposing the body to ionizing radiation while maintaining an electrical potential across the body. The invention also provides a novel diamond consisting of a type IIb diamond having only a portion which has been subjected to radiation capable of inducing atomic displacements.


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Inventors: Vermeulen, Leon Ampeir

Application Number: 636144
Filing Date: 1975-11-28
Publication_date: 1977-08-30
Assignee:
Primary Class(es): 250/370.01 250/371, 250/492.1, 378/64
Other Classes:
US Patent Ref:
2678400May, 1954McKay250/370.
2760078Aug, 1956Youmans250/370.
2806145Sep, 1957Cotty250/370.

Other Refs:
Primary Examiner: Church, Craig E.
Assistant Examiner:
Attorney: