Du Yu-Lei 2009 Chinese Phys. Lett. 26 117102 doi:10.1088/0256-307X/26/11/117102
Du Yu-Lei
Show affiliationsWe perform a first-principles study on the electronic structure and elastic properties of Ti3AlC with an antiperovskite structure. The absence of band gap at the Fermi level and the finite value of the density of states at the Fermi energy reveal the metallic behavior of this compound. The elastic constants of Ti3AlC are derived yielding c11 = 356 GPa, c11 = 55 GPa, c44 = 157 GPa. The bulk modulus B, shear modulus G and Young's modulus E are determined to be 156, 151 and 342 GPa, respectively. These properties are compared with those of Ti3AlC2 and Ti2AlC with a layered structure in the Ti-Al-C system and Fe3AlC with the same antiperovskite structure.
71.20.Ps Other inorganic compounds
71.15.Mb Density functional theory, local density approximation, gradient and other corrections
Issue 11 (November 2009)
Received 11 May 2009
Du Yu-Lei 2009 Chinese Phys. Lett. 26 117102
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