Structure, microwave dielectric and optical properties of Ln2/3Gd1/3TiNbO6 (Ln=Ce, Pr, Nd and Sm) ceramics

Monoclinically distorted perovskites, A2ZnTiO6 (A=Pr, Gd): Rietveld refinement, and dielectric studies

“…Pr 2 ZnTiO 6 shows greater dielectric constant than Gd 2 ZnTiO 6 which can be due to the relatively higher ionic radius of Pr +3 than Gd +3 leading to higher dipole moment. The result is in good agreement with the earlier literature reports [36,37]. The value of ԑ r is proportional to the tilting angle of TiO 6 octahedra.…”