Abstract
Micro-Raman spectroscopic study and lattice dynamics calculations were conducted to study a recently identified layered ternary carbide, Ti5Al2C3. The experimental Raman shifts were remarkably consistent with the calculated values. Polarized Raman spectrum was collected in the polycrystalline sample, which confirmed the theoretical symmetry assignment of the Raman modes. In addition, the atomic vibrations of the peaks at 192 cm(-1), 311 cm(-1), and 660 cm(-1) were identified to be the combination of the counterparts in Ti2AlC and Ti3AlC2. (C) 2014 AIP Publishing LLC.