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Spectroscopic ellip...
Spectroscopic ellipsometry study on the dielectric function of bulk Ti2AlN,Ti2AlC, Nb2AlC, (Ti0.5,Nb0.5)2AlC, and Ti3GeC2 MAX-phases
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Men, Arturo (author)
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- Rybka, M. (author)
- Linköpings universitet,Tunnfilmsfysik,Tekniska högskolan
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- Järrendahl, Kenneth (author)
- Linköpings universitet,Tunnfilmsfysik,Tekniska högskolan
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- Arwin, Hans (author)
- Linköpings universitet,Tillämpad optik,Tekniska högskolan
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- Magnuson, Martin, 1965- (author)
- Linköpings universitet,Tunnfilmsfysik,Tekniska högskolan
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- Hultman, Lars (author)
- Linköpings universitet,Tunnfilmsfysik,Tekniska högskolan
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- Barsoum, M. W. (author)
- Drexel University
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- Mendoza-Galvan, Arturo (author)
- Cinvestav-Querétaro, Libramiento Norponiente
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(creator_code:org_t)
- USA : AIP Publishing, 2011
- 2011
- English.
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In: Journal of Applied Physics. - USA : AIP Publishing. - 0021-8979 .- 1089-7550. ; 109, s. 013530-
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Abstract
Subject headings
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- The averaged complex dielectric function epsilon=() /3 of polycrystalline Ti2AlN, Ti2AlC,Nb2AlC, (Ti0.5,Nb0.5)2AlC, and Ti3GeC2 was determined by spectroscopic ellipsometry coveringthe mid infrared to the ultraviolet spectral range. The dielectric functions of epsilon correspond to the perpendicular and parallel dielectric tensor components relative to the crystallographic c-axis ofthese hexagonal compounds. The optical response is represented by a dispersion model with Drude–Lorentz and critical point contributions. In the low energy range the electrical resistivity is obtainedfrom the Drude term and ranges from 0.48 microOhm m for Ti3GeC2 to 1.59 mucro Ohm m for (Ti0.5,Nb0.5)2AlC.Furthermore, several compositional dependent interband electronic transitions can be identified. Forthe most important ones, Im(epsilon) shows maxima at: 0.78, 1.23, 2.04, 2.48, and 3.78 eV for Ti2AlN;0.38, 1.8, 2.6, and 3.64 eV for Ti2AlC; 0.3, 0.92, and 2.8 eV in Nb2AlC; 0.45, 0.98, and 2.58 eV in(Ti0.5,Nb0.5)2AlC; and 0.8, 1.85, 2.25, and 3.02 eV in Ti3GeC2.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Condensed matter physics
- Kondenserade materiens fysik
- Materiefysik
- Physics of Matter
- MAX-phases
- NATURAL SCIENCES
Publication and Content Type
- ref (subject category)
- art (subject category)
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