Diamond material
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United States of America Patent
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Dec 12, 2017
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N/A
app pub date -
May 27, 2015
filing date -
Jun 26, 2009
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Abstract
The present disclosure relates to a method of making fancy orange synthetic CVD diamond material. Among other things, the method may involve (i) providing a single crystal diamond material that has been grown by CVD and has a [Ns0] concentration less than 5 ppm; (ii) irradiating the provided CVD diamond material so as to introduce isolated vacancies V into at least part of the provided CVD diamond material such that the total concentration of isolated vacancies [VT] in the irradiated diamond material is at least the greater of (a) 0.5 ppm and (b) 50% higher than the [Ns0] concentration in ppm in the provided diamond material; and (iii) annealing the irradiated diamond material to forming vacancy chains from at least some of the introduced isolated vacancies.
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