Table 3: Estimated dipole moment of TaO6 octahedron of the ferroelectric phase at 300 K (A21am) and the high-temperature paraelectric phase (I4/mmm) at 1000 K [25].

A21amI4/mmm
  Present studyMiura [34]Shimakawa et al. [35]Rae et al. [36]Present study

0.0350.5640.4250.3860
−0.702−0.0740.0010.0030
1.5281.7471.1691.1171.365
1.6821.8371.2441.1821.365