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ABO3 Perovskite-Oxide Polymorphs: Corner Sharing Octahedrons

Name Structure Factoids Brillouin Zone Interactive image
Pm3m (Cubic)
a=b=c
α=β=γ=90º
Pm-3m
  • Aristotype perovskite structure
  • Centrosymmetric, does not support polar distortions
Click Under construction!
P4mm (Tetragonal)
a=b≠c
α=β=γ=90º
 P4mm
  • Allows for a polar distortion in the [0,0,c] direction
 Click Under construction!
Amm2 (Orthorhombic)
a≠b≠c
α=β=γ=90º
 Amm2
  • Allows for a polar distortion in the [a,a,0] direction
 Click Under construction!
Cm (Monoclininc)
a≠b≠c
α=γ=90º≠β
 Cm
  • Allows for a polar distortion in the [a,a,c] direction
Click Under construction!
R3c (Rhombohedral)
a=b≠c
α=β=90º, γ=120
 R3c
  • Allows for a polar distortion in the [a,a,a] direction within the
    pseudocubic unit cell
Click Under construction!