UHTCs | ultra high-temperature ceramics |
DFT | density functional theory |
DFPT | density functional perturbation theory |
PAW | projector augmented-wave |
PP-PW | pseudopotential, plane-wave |
XC | exchange-correlation |
LDA | local density approximation |
GGA | generalized gradient approximation |
PBE | Perdew-Burke-Ernzerhof |