(Pb1-Bi )(Ti1-Mn )O3: Competing mechanism of tetragonal-cubic phase on A/B site modifications

Structural, vibrational and dielectric properties of (Pb1-xBix)(Ti1-xMnx)O3 (PBTM) (0 ≤ x ≤ 0.50) polycrystalline ceramics have been examined as a function of temperature. Synchrotron-based powder x-ray diffraction was employed to confirm phase purity and crystal structures of the samples. Tetragonality (c/a ratio) of the PBTM system increased to 1.066 from 1.064 for the compositions x = 0.12 for pure PbTiO3 sample and decreased with further...