New Data on the Nature of the EPR OK1 and N3 Centers in Diamond

Nadolinny, V. A.; Yuryeva, O. P.; Shatsky, V. S.; Stepanov, Aleksandr S.; Golushko, V. V.; Рахманова, М. И.; Kupriyanov, Igor N.; Kalinin, Alexander; Palyanov, Yuri N.; Zedgenizov, D. A.

doi:10.1007/s00723-009-0012-8

Cited by 25 publications

(41 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Both centers have electron spin S = 1/2, and the HFS of one nitrogen atom (Table 3) [32,33]. In the photoluminescence spectra, the OK1 paramagnetic centers correspond to the S1 system (zero-phonon lines at 503.4 nm and 510.7 nm); the N3 center has a zero-phonon line at 440.3 nm.…”

Section: Titanium-containing Centers In Diamondmentioning

confidence: 99%

“…However, the oxygen HFS could not be detected in the EPR spectra, since 17 O (I = 5/2, natural abundance 0.038%) is the only stable isotope with a magnetic nucleus. The finding of Novosibirsk geologists of the eclogite sample, with diamonds containing N3 and OK1 centers, stimulated new efforts in the investigation of N3 and OK1 centers [32,33]. The statistics shows that the concentration of OK1 and N3 centers inversely depends on the nitrogen concentration.…”

Section: Titanium-containing Centers In Diamondmentioning

confidence: 99%

“…g 1 (A 1 ) corresponds to (1)(2)(3)(4)(5)(6)(7)(8)(9)(10), α is the angle between g 2 (A 2 ) and (110). γ is the angle between A 1 and (1-1-1) or (-11-1) that rotates towards (1-10), A 2 is perpendicular to the (110) plane [32,33]. A detailed analysis of the N3 EPR spectrum allowed the authors to assume that the N3 center had the structure of a Ti-N pair at the neighboring carbon sites (Figure 3) [32,33].…”

Section: Titanium-containing Centers In Diamondmentioning

confidence: 99%

“…γ is the angle between A 1 and (1-1-1) or (-11-1) that rotates towards (1-10), A 2 is perpendicular to the (110) plane [32,33]. A detailed analysis of the N3 EPR spectrum allowed the authors to assume that the N3 center had the structure of a Ti-N pair at the neighboring carbon sites (Figure 3) [32,33]. The Ti-C bond lengths (~2 Å) are considerably longer than the C-C bond in diamond (1.54 Å), which results in internal strain around the defect.…”

Section: Titanium-containing Centers In Diamondmentioning

confidence: 99%

See 3 more Smart Citations

Incorporation of Large Impurity Atoms into the Diamond Crystal Lattice: EPR of Split-Vacancy Defects in Diamond

2017

View full text Add to dashboard Cite

Diamond is a unique mineral widely used in diverse fields due to its remarkable properties. The development of synthesis technology made it possible to create diamond-based semiconductor devices. In addition, doped diamond can be used as single photon emitters in various luminescence applications. Different properties are the result of the presence of impurities or intrinsic defects in diamond. Thus, the investigation of the defect formation process is of particular interest. Although hydrogen, nitrogen, and boron have been known to form different point defects, the possibility for large impurity atoms to incorporate into the diamond crystal structure has been questioned for a long time. In the current paper, the paramagnetic nickel split-vacancy defect in diamond is described, and the further investigation of nickel-, cobalt-, titanium-, phosphorus-, silicon-, and germanium-related defects is discussed.

show abstract

Section: Titanium-containing Centers In Diamondmentioning

confidence: 99%

Section: Titanium-containing Centers In Diamondmentioning

confidence: 99%

Section: Titanium-containing Centers In Diamondmentioning

confidence: 99%

Section: Titanium-containing Centers In Diamondmentioning

confidence: 99%

See 2 more Smart Citations

Incorporation of Large Impurity Atoms into the Diamond Crystal Lattice: EPR of Split-Vacancy Defects in Diamond

2017

View full text Add to dashboard Cite

show abstract

“…The difficulties of identification of oxygen-related defects may be represented by the case of the OK1 17 and N3 18 ESR centers, where these centers were first tentatively assigned to oxygen-related defects in type Ib natural diamonds (see Ref. 19 and references therein), however, later it has been shown by further ESR and other studies that they are rather related to Ti defects 20,21 .…”

Section: Introductionmentioning

confidence: 99%

Characterization of oxygen defects in diamond by means of density functional theory calculations

Thiering¹,

Gali²

2016

Phys. Rev. B

View full text Add to dashboard Cite

Point defects in diamond are of high interest as candidates for realizing solid state quantum bits, bioimaging agents, or ultrasensitive electric or magnetic field sensors. Various artificial diamond synthesis methods should introduce oxygen contamination in diamond, however, the incorporation of oxygen into diamond crystal and the nature of oxygen-related point defects are largely unknown. Oxygen may be potentially interesting as a source of quantum bits or it may interact with other point defects which are well established solid state qubits. Here we employ plane-wave supercell calculations within density functional theory, in order to characterize the electronic and magneto-optical properties of various oxygen-related defects. Beside the trivial single interstitial and substitutional oxygen defects we also consider their complexes with vacancies and hydrogen atoms. We find that oxygen defects are mostly electrically active and introduce highly correlated orbitals that pose a challenge for density functional theory modeling. Nevertheless, we are able to identify the fingerprints of substitutional oxygen defect, the oxygen-vacancy and oxygen-vacancy-hydrogen complexes in the electron paramagnetic resonance spectrum. We demonstrate that first principles calculations can predict the motional averaging of the electron paramagnetic resonance spectrum of defects that are subject to Jahn-Teller distortion. We show that the high-spin neutral oxygen-vacancy defect exhibits very fast non-radiative decay from its optical excited state that might hinder to apply it as a qubit.

show abstract

EPR study of impurity defects in diamonds grown in carbonate medium

Komarovskikh

Nadolinny

Palyanov

et al. 2013

Physica Status Solidi (a)

View full text Add to dashboard Cite

Three previously unobserved paramagnetic centers: OX1, OX2, and OX3, have been revealed by the EPR studies of synthetic diamonds grown in Na2CO3–CO2–C system. All of these centers have electron spin S = 1/2 and have not got hyperfine structure. High g‐factor anisotropy of the studied OX1, OX2, and OX3 centers in the absence of transition metal ions in diamond structure may be indicative that there is an oxygen atom in the structure of these defects. IR spectra of the studied diamonds contain intensive line at 1332 cm−1, which confirms high content of positive charge state of substitutional nitrogen (N+) in studied diamonds. It was supposed that all of these three centers have negative charge states. In the paper structures of OX1, OX2, and OX3 centers are discussed according to the obtained experimental data.

show abstract

New Data on the Nature of the EPR OK1 and N3 Centers in Diamond

Cited by 25 publications

References 11 publications

Incorporation of Large Impurity Atoms into the Diamond Crystal Lattice: EPR of Split-Vacancy Defects in Diamond

Incorporation of Large Impurity Atoms into the Diamond Crystal Lattice: EPR of Split-Vacancy Defects in Diamond

Characterization of oxygen defects in diamond by means of density functional theory calculations

EPR study of impurity defects in diamonds grown in carbonate medium

Contact Info

Product

Resources

About