Color Alterations in CVD Synthetic Diamond with Heat and UV Exposure: Implications for Color Grading and Identification

Autor: Philip Maurice Martineau, Harpreet Kaur Dhillon, Bradley L. Cann, Daniel J. Twitchen, Rizwan Uddin Ahmad Khan, Mark E. Newton

Publikováno v: Gems & Gemology. 46:18-26

In response to heat and UV exposure, some synthetic diamond gemstones grown by chemical vapor deposition exhibit large, reversible changes in color. A significant reduction in color was achieved by heating several CVD synthetic gemstones to >450 degr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c05355842a9d5108ddabd8974987a792
https://doi.org/10.5741/gems.46.1.18

Identification of Synthetic Diamond Grown Using Chemical Vapor Deposition (CVD)

Autor: Andrew Taylor, Simon Craig Lawson, Philip Maurice Martineau, David J. F. Evans, Samantha J. Quinn, Michael J. Crowder

Publikováno v: Gems & Gemology. 40:2-25

encountered by the gem trade, but until recently attention has focused almost exclusively on the kind produced by exposing carbon-containing solids to high pressures and temperatures (HPHTgrown synthetic diamond; see, e.g., Shigley et al., 1986, 1987

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a71e413241b6eaaaf93e1738fb3bdb4a
https://doi.org/10.5741/gems.40.1.2

Optical properties of the neutral silicon split-vacancy center in diamond

Autor: Daniel J. Twitchen, Philip Maurice Martineau, Gavin Davies, Andrew M. Edmonds, Rizwan Uddin Ahmad Khan, Ulrika F. S. D'Haenens-Johansson, Ben Green, Mark E. Newton

Publikováno v: Physical Review B. 84

The zero-phonon line (ZPL) at 1.68 eV has been attributed to the negatively charged silicon split-vacancy center in diamond, (Si-V)${}^{\ensuremath{-}}$, and has been extensively characterized in the literature. Computational studies have predicted t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9c08243a5f85c12d110b8111df52f585
https://doi.org/10.1103/physrevb.84.245208

Erratum: Electron paramagnetic resonance studies of silicon-related defects in diamond [Phys. Rev. B77, 245205 (2008)]

Autor: Daniel J. Twitchen, Andrew M. Edmonds, Mark E. Newton, S. D. Williams, Philip Maurice Martineau

Publikováno v: Physical Review B. 82

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7482fa52c3bfba99d5b2515d6c8ba184
https://doi.org/10.1103/physrevb.82.249901

Hyperfine interaction in the ground state of the negatively charged nitrogen vacancy center in diamond

Autor: Philip Maurice Martineau, Daniel J. Twitchen, David Fisher, Mark E. Newton, Andrew M. Edmonds, Solveig Felton, J. M. Baker

Publikováno v: Felton, S, Edmonds, A M, Newton, M E, Martineau, P M, Fisher, D, Twitchen, D J & Baker, J M 2009, ' Hyperfine interaction in the ground state of the negatively charged nitrogen vacancy center in diamond ', Physical Review B (Condensed Matter), vol. 79, no. 7, 075203 . https://doi.org/10.1103/PhysRevB.79.075203

The N 14, N 15, and C 13 hyperfine interactions in the ground state of the negatively charged nitrogen vacancy (NV-) center have been investigated using electron-paramagnetic-resonance spectroscopy. The previously published parameters for the N 14 hy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ce368b97560118da2e6585100f6c12e
https://pure.qub.ac.uk/en/publications/hyperfine-interaction-in-the-ground-state-of-the-negatively-charged-nitrogen-vacancy-center-in-diamond(a83c3b9a-d205-41bb-910b-0e8014aedfca).html