Zobrazeno 1 - 10
of 27
pro vyhledávání: '"K. W. Nugent"'
Autor:
J. O. Orwa, S. P. Withrow, Y. J. Li, K. W. Nugent, David N. Jamieson, J. L. Peng, Jeffrey C. McCallum, Les A. Bursill, Steven Prawer
Publikováno v:
Journal of Applied Physics. 90:3007-3018
We report synthesis of diamond nanocrystals directly from carbon atoms embedded into fused silica by ion implantation followed by thermal annealing. The production of the diamond nanocrystals and other carbon phases is investigated as a function of i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de8f157cd51b8fb3f33bb0982ad7f51e
https://doi.org/10.1063/1.1388857
https://doi.org/10.1063/1.1388857
Autor:
Steven Prawer, H. S. Sands, K. W. Nugent, X. Shi, Yeshayahu Lifshitz, K. W. R. Gilkes, John Robertson
Publikováno v:
Journal of Applied Physics. 87:7283-7289
The bonding in a series of unhydrogenated amorphous carbon films has been analyzed quantitatively using Raman spectroscopy excited by laser light in both the visible and ultraviolet regions of the spectrum. The asymmetry of the peak near 1550 cm−1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bfc55cf72a89dc1862507da82686fac
https://doi.org/10.1063/1.372981
https://doi.org/10.1063/1.372981
Publikováno v:
Scopus-Elsevier
Buried graphitic clusters of an average size up to 37 A have been realised in fused quartz using a combination of keV C ion implantation and CW laser annealing. The annealing dynamics of these clusters has been studied by confocal laser microRaman sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::07c260b4da9d63cd9e9784810067e934
https://doi.org/10.1016/s0925-9635(99)00182-x
https://doi.org/10.1016/s0925-9635(99)00182-x
Publikováno v:
Scopus-Elsevier
In an attempt to synthesize diamond nanocrystals 1 MeV carbon ions were implanted into fused quartz and sapphire to several different doses and annealed in a furnace at 1100°C for different durations in different annealing ambients. We observe a pea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5b2e75f0cf930920a64415ce433cfef
https://doi.org/10.1016/s0925-9635(99)00044-8
https://doi.org/10.1016/s0925-9635(99)00044-8
Publikováno v:
Solid State Communications. 108:765-768
The MicroRaman scattering properties of AlxGa1−xN (x=0, 0.07, 0.15) are presented. The observed modes followed the wurtzite GaN and AlN selection rules. For increasing x, the optical phonon frequencies shift linearly towards higher frequencies and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1d4c09574fe54da20d18e9b1020b966
https://doi.org/10.1016/s0038-1098(98)00422-0
https://doi.org/10.1016/s0038-1098(98)00422-0
Publikováno v:
International Journal of Modern Physics B. 12:1963-1974
Micro-Raman scattering by highly oriented crystalline aluminum nitride has been measured. Phonon modes in AlN were identified in different scattering geometry configurations and scattering polarizations. The phonon modes revealed that aluminum nitrid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9555d50f5875dafc2d688d74d213b89
https://doi.org/10.1142/s0217979298001137
https://doi.org/10.1142/s0217979298001137
Autor:
Steven Prawer, K. W. Nugent
Publikováno v:
Scopus-Elsevier
A number of isolated single CVD (chemical vapour deposition) diamond crystals were mapped using confocal Raman microscopy at a spatial resolution of 1 μm. Both square and triangular faceted crystals were included. It was found that, in general, regi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::939e0aeb83b74007923ed5ed19738f14
https://doi.org/10.1016/s0925-9635(97)00212-4
https://doi.org/10.1016/s0925-9635(97)00212-4
Autor:
Steven Prawer, K. W. Nugent, Shi Xu, Yeshayahu Lifshitz, Beng Kang Tay, S. R. P. Silva, W. I. Milne, D.I Flynn
Publikováno v:
Philosophical Magazine B. 76:351-361
The mechanical and structural properties of the tetrahedral amorphous carbon (ta-C) films deposited by the filtered cathodic vacuum arc technique on silicon at room temperature have been studied over the carbon ion energy range 15–200 eV. High (abo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7c24316c7fb889bef92999c0ef0b274
https://doi.org/10.1080/01418639708241099
https://doi.org/10.1080/01418639708241099
The characterisation of high-grade synthetic quartz, corundum and spinel using ionoluminescence (IL)
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 130:734-739
Ionoluminescence (IL) has been used to characterise synthetic quartz (SiO 2 ), corundum (Al 2 O 3 ) and spinel (MgAl 2 O 4 ) samples at cooled and ambient temperatures. Results are compared with cathodoluminescence (CL) and photoluminescence (PL) dat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c3e1e356e4c16ec3b2f66ac493a8d55
https://doi.org/10.1016/s0168-583x(97)00179-1
https://doi.org/10.1016/s0168-583x(97)00179-1
Publikováno v:
Scopus-Elsevier
Radiation damage induced by 2 MeV alpha particles in polycrystalline diamond films has been studied as a function of the irradiation dose D (1012≤D≤1017 cm−2). The films were characterized using Raman/photoluminescence spectroscopy and I(V,T) m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::329b22159ba98adbe669739a489d673c
https://doi.org/10.1063/1.363545
https://doi.org/10.1063/1.363545