Matches in SemOpenAlex for { <https://semopenalex.org/work/W1509583728> ?p ?o ?g. }
Showing items 1 to 82 of
82
with 100 items per page.
- W1509583728 abstract "Electron paramagnetic resonance (EPR) has been used to study point defects in synthetic single crystal diamond. Newly observed defects are reported in high pressure high temperature (HPHT) and chemical vapour deposition (CVD) diamond. HPHT diamond doped with 15N has been used to investigate the g = 2 region of the EPR spectrum which is obscured when natural isotopic abundances are present. Two previously unreported defects labelled WAR9 and WAR10 are reported. The EPR data has been shown to be consistent with the neutral nitrogen interstitial, N0 I (WAR9), and neutral nitrogen di-interstitial, NI-I001 (WAR10), defects respectively. Two further defects observed in CVD diamond are reported here. The first labelled WAR2 is preferentially aligned with the direction of growth, [001]. The EPR data is consistent with a (V-(CH)-V)0 structure although theoretical studies suggest that this structure is unstable at CVD growth temperatures. Growth mechanisms are suggested that would account for the observed preferential alignment. The second defect labelled WAR5, has been observed exclusively in samples grown using an experimental CVD chemistry containing oxygen. The EPR data is consistent with the OV0 defect, although no confirming 17O hyperfine structure has been observed. 13C hyperfine data is also reported for the KUL1/VnH− defect (n = 1 or 2) but the new data is not sufficient to conclusively discount either the n = 1 or n = 2 models suggested for this defect.Changes in defect concentrations in CVD diamond with thermal and illumination treatments has been investigated. Experimental data has indicated the presence of an unseen trap, common to CVD diamond, with concentrations comparable to that of N0S, and levels in the band-gap 0.5{1.2 eV above the top of the valence band. The difficult quantification of sub part per billion defect concentrations, as observed in electronic grade material, is tackled with the use of rapid passage EPR. It is shown that with this technique it is possible to detect concentrations of single nitrogen in diamond at tens of parts per trillion, close to a factor of 100 improvement on the currently used slow passage EPR." @default.
- W1509583728 created "2016-06-24" @default.
- W1509583728 creator A5063120119 @default.
- W1509583728 date "2009-07-01" @default.
- W1509583728 modified "2023-09-27" @default.
- W1509583728 title "Magnetic resonance studies of point defects in diamond" @default.
- W1509583728 hasPublicationYear "2009" @default.
- W1509583728 type Work @default.
- W1509583728 sameAs 1509583728 @default.
- W1509583728 citedByCount "1" @default.
- W1509583728 countsByYear W15095837282017 @default.
- W1509583728 crossrefType "dissertation" @default.
- W1509583728 hasAuthorship W1509583728A5063120119 @default.
- W1509583728 hasConcept C113196181 @default.
- W1509583728 hasConcept C121332964 @default.
- W1509583728 hasConcept C131538251 @default.
- W1509583728 hasConcept C164675345 @default.
- W1509583728 hasConcept C171250308 @default.
- W1509583728 hasConcept C178790620 @default.
- W1509583728 hasConcept C184779094 @default.
- W1509583728 hasConcept C185592680 @default.
- W1509583728 hasConcept C187961010 @default.
- W1509583728 hasConcept C191897082 @default.
- W1509583728 hasConcept C192562407 @default.
- W1509583728 hasConcept C2776921476 @default.
- W1509583728 hasConcept C2778583532 @default.
- W1509583728 hasConcept C43617362 @default.
- W1509583728 hasConcept C46141821 @default.
- W1509583728 hasConcept C49040817 @default.
- W1509583728 hasConcept C537208039 @default.
- W1509583728 hasConcept C57410435 @default.
- W1509583728 hasConcept C57863236 @default.
- W1509583728 hasConcept C60546165 @default.
- W1509583728 hasConcept C8010536 @default.
- W1509583728 hasConceptScore W1509583728C113196181 @default.
- W1509583728 hasConceptScore W1509583728C121332964 @default.
- W1509583728 hasConceptScore W1509583728C131538251 @default.
- W1509583728 hasConceptScore W1509583728C164675345 @default.
- W1509583728 hasConceptScore W1509583728C171250308 @default.
- W1509583728 hasConceptScore W1509583728C178790620 @default.
- W1509583728 hasConceptScore W1509583728C184779094 @default.
- W1509583728 hasConceptScore W1509583728C185592680 @default.
- W1509583728 hasConceptScore W1509583728C187961010 @default.
- W1509583728 hasConceptScore W1509583728C191897082 @default.
- W1509583728 hasConceptScore W1509583728C192562407 @default.
- W1509583728 hasConceptScore W1509583728C2776921476 @default.
- W1509583728 hasConceptScore W1509583728C2778583532 @default.
- W1509583728 hasConceptScore W1509583728C43617362 @default.
- W1509583728 hasConceptScore W1509583728C46141821 @default.
- W1509583728 hasConceptScore W1509583728C49040817 @default.
- W1509583728 hasConceptScore W1509583728C537208039 @default.
- W1509583728 hasConceptScore W1509583728C57410435 @default.
- W1509583728 hasConceptScore W1509583728C57863236 @default.
- W1509583728 hasConceptScore W1509583728C60546165 @default.
- W1509583728 hasConceptScore W1509583728C8010536 @default.
- W1509583728 hasLocation W15095837281 @default.
- W1509583728 hasOpenAccess W1509583728 @default.
- W1509583728 hasPrimaryLocation W15095837281 @default.
- W1509583728 hasRelatedWork W1968329463 @default.
- W1509583728 hasRelatedWork W2005087121 @default.
- W1509583728 hasRelatedWork W2022448470 @default.
- W1509583728 hasRelatedWork W2032749637 @default.
- W1509583728 hasRelatedWork W2032889012 @default.
- W1509583728 hasRelatedWork W2048718101 @default.
- W1509583728 hasRelatedWork W2060626745 @default.
- W1509583728 hasRelatedWork W2087702615 @default.
- W1509583728 hasRelatedWork W2155462717 @default.
- W1509583728 hasRelatedWork W2167749825 @default.
- W1509583728 hasRelatedWork W2224340579 @default.
- W1509583728 hasRelatedWork W2225437010 @default.
- W1509583728 hasRelatedWork W2283422297 @default.
- W1509583728 hasRelatedWork W2313830920 @default.
- W1509583728 hasRelatedWork W2317099744 @default.
- W1509583728 hasRelatedWork W2941930903 @default.
- W1509583728 hasRelatedWork W3198538168 @default.
- W1509583728 hasRelatedWork W3204252191 @default.
- W1509583728 hasRelatedWork W3211323053 @default.
- W1509583728 hasRelatedWork W846794792 @default.
- W1509583728 isParatext "false" @default.
- W1509583728 isRetracted "false" @default.
- W1509583728 magId "1509583728" @default.
- W1509583728 workType "dissertation" @default.