EPR studies of a nickel-boron centre in synthetic diamond

被引：17

作者：

Nadolinny, VA

Baker, JM

Newton, ME

Kanda, H

机构：

[1] Kings Coll London, Dept Phys, London WC2R 2LS, England

[2] Russian Acad Sci, Inst Inorgan Chem, Novosibirsk 630090, Russia

[3] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX2 3PU, England

来源：

关键词：

nickel-boron complex; EPR; HTP diamond;

D O I：

10.1016/S0925-9635(01)00620-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：627 / 630

页数：4

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