Physical properties of predicted Ti2CdN versus existing Ti2CdC MAX phase: An ab initio study
Author(s)
Roknuzzaman, M
Hadi, MA
Abden, MJ
Nasir, MT
Islam, AKMA
Ali, MS
Ostrikov, K
Naqib, SH
Griffith University Author(s)
Year published
2016
Metadata
Show full item recordAbstract
Ab intio calculations were done to investigate the structural, elastic, electronic and optical properties of the Cd-containing theoretically predicted MAX phase, Ti2CdN, in comparison with the isostructural and already synthesized phase, Ti2CdC. These calculations reveal that the substitution of C by N affects the lattice parameter c, whereas the lattice parameter a, remains almost unchanged. All the elastic constants and moduli increase when carbon is replaced by nitrogen. The elastic anisotropy in Ti2CdC is higher in comparison with that of Ti2CdN. Both these nanolaminates are brittle in nature. The calculated electronic ...
View more >Ab intio calculations were done to investigate the structural, elastic, electronic and optical properties of the Cd-containing theoretically predicted MAX phase, Ti2CdN, in comparison with the isostructural and already synthesized phase, Ti2CdC. These calculations reveal that the substitution of C by N affects the lattice parameter c, whereas the lattice parameter a, remains almost unchanged. All the elastic constants and moduli increase when carbon is replaced by nitrogen. The elastic anisotropy in Ti2CdC is higher in comparison with that of Ti2CdN. Both these nanolaminates are brittle in nature. The calculated electronic band structures and density of states suggest that the chemical bonding in these two ternary compounds is a combination of covalent, ionic and metallic in nature. Electrical conductivity of Ti2CdC is found to be higher than that of Ti2CdN. The calculated reflectivity spectra show that both the MAX phases Ti2CdC and Ti2CdN have the potential to be used as coating materials to minimize solar heating.
View less >
View more >Ab intio calculations were done to investigate the structural, elastic, electronic and optical properties of the Cd-containing theoretically predicted MAX phase, Ti2CdN, in comparison with the isostructural and already synthesized phase, Ti2CdC. These calculations reveal that the substitution of C by N affects the lattice parameter c, whereas the lattice parameter a, remains almost unchanged. All the elastic constants and moduli increase when carbon is replaced by nitrogen. The elastic anisotropy in Ti2CdC is higher in comparison with that of Ti2CdN. Both these nanolaminates are brittle in nature. The calculated electronic band structures and density of states suggest that the chemical bonding in these two ternary compounds is a combination of covalent, ionic and metallic in nature. Electrical conductivity of Ti2CdC is found to be higher than that of Ti2CdN. The calculated reflectivity spectra show that both the MAX phases Ti2CdC and Ti2CdN have the potential to be used as coating materials to minimize solar heating.
View less >
Journal Title
Computational Materials Science
Volume
113
Subject
Condensed matter physics
Atomic, molecular and optical physics
Materials engineering
Science & Technology
Technology
Materials Science, Multidisciplinary
Materials Science
Cd-containing MAX phases