BaTiO3 has series of structural transformations starting from paraelectric cubic phase to ferroelectric phases:
| phase | T<,K | |||
| cubic | Oh | Pm-3m | ||
| tetragonal | 393 | C4v | P4mm | distorted along [001] |
| orthorombic | 278 | C2v | Amm2 | distorted along [011] |
| rhombohedral | 183 | C3v | R3m | distorted along [111] |
| hexagonal | 194 | D6h | P63/mmc |