We report on the Raman spectra of Ti3SiC2 (312), M2AlC(211) (M=Ti, V, Cr, and Nb) and Ti4AlN3 (413), as representative compounds from the family of Mn+1AXn phases. Intense and narrow first-order Raman peaks are observed, and we present an analysis of the spectra based on symmetry considerations and from results of first-principles calculations of phonon frequencies. The agreement between experimental and calculated mode energies is excellent. The identification of the modes enables application of Raman scattering as a diagnostic tool for the detailed study of the structural and physical properties of this family of compounds and their engineered solid solutions.
Spanier, J. E.,
Amer, M. S.,
& Barsoum, M. W.
(2005). Vibrational Behavior of the Mn+1AXn Phases from First-Order Raman Scattering (M=Ti,V,Cr, A=Si, X=C,N). Physical Review B: Condensed Matter and Materials Physics, 71 (1), 012103.