Formation of the nitrogen aggregates in annealed diamond by neutron irradiation

Neutron heavy irradiation was performed on synthetic diamonds contain nitrogen atoms in isolated substitutional form (called “type Ib diamond”) and they were annealed under a pressure of 6 GPa. A large number of nitrogen B-aggregate which consists of four substitutional nitrogen atoms symmetrically...

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Bibliographic Details
Published in:AIP advances 2018-02, Vol.8 (2), p.025106-025106-6
Main Authors: Mita, Y., Nisida, Y., Okada, M.
Format: Article
Language:English
Subjects:
Aggregates
Annealing
Atomic properties
Diamonds
Neutron irradiation
Neutrons
Nitrogen
Nitrogen atoms
Type 1b diamond
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Summary:Neutron heavy irradiation was performed on synthetic diamonds contain nitrogen atoms in isolated substitutional form (called “type Ib diamond”) and they were annealed under a pressure of 6 GPa. A large number of nitrogen B-aggregate which consists of four substitutional nitrogen atoms symmetrically surrounding a vacancy was formed within 30 m from single nitrogen atoms. Furthermore it is observed that, in these diamonds, single nitrogen atoms coexist with the B-aggregates, which is unexplainable by the simple nitrogen aggregation model.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.5011262