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Volker Presser, Michael Naguib, Laurent Chaput, Atsushi Togo, Gilles Hug and Michel W. Barsoum First-order Raman scattering of the MAX phases: Ti2AlN, Ti2AlC0.5N0.5, Ti2AlC, (Ti0.5V0.5)2AlC, V2AlC, Ti3AlC2, and Ti3GeC2 Journal of Raman Spectroscopy 43

Article first published online: 2 AUG 2011 | DOI: 10.1002/jrs.3036

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The Raman spectra of a number of MAX phases (Ti2AlN, Ti2AlC0.5N0.5, [Ti0.5,V0.5]2AlC, Ti2AlC, V2AlC, Ti3AlC2 and Ti3GeC2), mostly not spectroscopically investigated before, are measured and compared to the calculated mode wavenumbers via density functional theory. The 211 phases only show modes associated to atomic displacements of the ‘M’ and ‘A’ atomic planes, while the Ti3AlC2 and Ti3GeC2 also show modes that correspond with vibrations of the ‘X’ sublattice relative to itself.

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