“…This difference affects its physical properties, that b ′ -SrTa 2 O 6 polymorph has better dielectric properties compared to b-SrTa 2 O 6 . 8,9 The b-SrTa 2 O 6 is orthorhombic with space group Pnam and lattice parameters a = 12.37 Å, b = 12.43 Å, c = 7.72 Å, V = 1187.70 Å 3 , Z = 10. 8,9 The b ′ -SrTa 2 O 6 is tetragonal with space group P4/mbm and lattice parameters a = 12.47 Å, c = 3.90 Å, V = 606.27 Å 3 , Z = 5.…”