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EPR studies of a nickel-boron centre in synthetic diamond

Abstract:
Possible models are discussed for a new EPR centre (NOL1) observed in a diamond grown from a nickel-containing solvent catalyst with a titanium nitrogen getter. Nickel and boron are the most prevalent impurities in the diamond. The centre has trigonal (C-3v) symmetry about <111>, S = 1, g(11) = 2.0235 (5), g(perpendicular to) = 2.0020(10) and D = - 171(1) GHz. The EPR lineshape is unusual and we tentatively attribute this to partially resolved B-11 hyperfine structure. This centre may be the same as NIRIM-5, observed in boron doped synthetic diamond. The most likely structure for this centre is an interstitial Ni2+ with a substitutional B- ion at the nearest neighbour site along <111>. (C) 2002 Elsevier Science B.V. All rights reserved.
Publication status:
Published

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Publisher copy:
10.1016/S0925-9635(01)00620-3

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Role:
Author


Journal:
DIAMOND AND RELATED MATERIALS More from this journal
Volume:
11
Issue:
3-6
Pages:
627-630
Publication date:
2002-01-01
Event title:
12th European Conference on Diamond, Diamond-Like Materials, Carbon Nanotubes, Nitrides and Silicon Carbide (Diamond 2001)
DOI:
ISSN:
0925-9635


Keywords:
Pubs id:
pubs:25154
UUID:
uuid:06110c66-f27e-4220-a0b6-511a69589991
Local pid:
pubs:25154
Source identifiers:
25154
Deposit date:
2012-12-19
ARK identifier:

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