Journal ArticleDOI
The relationship between infrared absorption and the A defect concentration in diamond
TLDR
In this paper, the nitrogen concentrations of a suite of purely type IaA diamonds have been determined by a destructive method involving combustion of the specimens and measurement, by capacitance manometry, of the released nitrogen.Abstract:
The nitrogen concentrations of a suite of thirteen purely type IaA diamonds have been determined by a destructive method involving combustion of the specimens and measurement, by capacitance manometry, of the released nitrogen. These values have been related to measurements of the infrared absorption strength due to nitrogen in the form of A centres, or nitrogen-pair defects, in the specimens. It is found that an absorption coefficient of 1 cm−1, at 1282 wavenumbers, is produced by 16.1 ± 1 at. p.p.m. of nitrogen in this form. This is in good agreement with the values found by inert-gas fusion and by an indirect method described in the previous paper. Application of a statistical analysis to these three consistent sets of results taken collectively suggests that a reliable working value for the absorption strength at 1282 wavenumbers due to the A defect in diamond would be 1cm−1 per 16.5 ±1 at. p.p.m.read more
Citations
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Journal ArticleDOI
Sensitivity optimization for NV-diamond magnetometry
John Barry,Jennifer Schloss,Erik Bauch,Matthew Turner,Connor Hart,Linh Pham,Ronald L. Walsworth +6 more
TL;DR: In this article, a review analyzes present and proposed approaches to enhance the sensitivity of broadband ensemble-NV-diamond magnetometers and identifies the most promising avenues and are investigated extensively.
Journal ArticleDOI
On the existence of positively charged single-substitutional nitrogen in diamond
TL;DR: In this paper, the relationship between peak absorption at 1332 and concentration of centres has been derived, namely 1 of absorption is produced by ppm centres, but the component is uniquely identified by further peaks at 1046 and 950.
Journal ArticleDOI
Infrared absorption by the B nitrogen aggregate in diamond
TL;DR: In this paper, two approaches have been adopted in attempting to determine the strength of the one-phonon infrared absorption by the B nitrogen aggregate in diamond, which is complicated because diamonds in which the B aggregate is the only point defect also contain extended defects that may or may not involve nitrogen.
Journal ArticleDOI
Superdeep diamonds from the Juina area, Mato Grosso State, Brazil
Felix V. Kaminsky,Olga D. Zakharchenko,R.M. Davies,William L. Griffin,G. K. Khachatryan-Blinova,Andrei A. Shiryaev +5 more
TL;DR: In this paper, alluvial diamonds from the Juina area in Mato Grosso, Brazil, have been characterized in terms of their morphology, syngenetic mineral inclusions, carbon isotopes and nitrogen contents.
Journal ArticleDOI
Infrared absorption by the single nitrogen and A defect centres in diamond
TL;DR: In this article, the infrared absorption spectra of a suite of twenty-one type Ib synthetic diamonds have been recorded, and the concentrations of nitrogen in the form of single substitutional N atoms in these specimens determined by electron spin resonance measurements.
References
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Journal ArticleDOI
Nitrogen, a major impurity in common type I diamond
W. Kaiser,W. L. Bond +1 more
TL;DR: In this article, it is shown that the strongest absorption bands in the infrared at 78, 83, 91, and 208 \ensuremath{\mu} are considered to be C-N molecular vibrations.
Journal ArticleDOI
Platelets and the infrared absorption of type Ia diamonds
TL;DR: In this paper, the B9 peak is attributed to carbon-carbon bond vibrations of atoms within the platelet, and it is suggested that other localized mode absorptions seen in type I a spectra may be attributed to vibrations of N-C and N-N-N bonds of atoms in the platelets.
Journal ArticleDOI
Infrared absorption by the single nitrogen and A defect centres in diamond
TL;DR: In this article, the infrared absorption spectra of a suite of twenty-one type Ib synthetic diamonds have been recorded, and the concentrations of nitrogen in the form of single substitutional N atoms in these specimens determined by electron spin resonance measurements.
Journal ArticleDOI
The A nitrogen aggregate in diamond-its symmetry and possible structure
TL;DR: In this article, the authors reported uniaxial stress measurements on the 30307 cm-1 absorption line of the A aggregates of nitrogen in diamond and showed that these aggregates are trigonal.
Journal ArticleDOI
The nitrogen content of type Ia natural diamonds
TL;DR: In this article, the nitrogen concentrations of pure IaB diamonds were measured by inert gas fusion analysis, as a function of their infrared absorption strengths, and it was found that an absorption coefficient of 1 cm −1 is produced, at 1282 wavenumbers, by 17.5 at. ppm of nitrogen.