This study looked at how calcium dopants affected the piezoelectric and dielectric characteristics of ceramics made from lead titanate (PbTiO3) that had undergone Sm modification. By using traditional mixed-oxide techniques and sintering at 12000C, Sm-modified PbTiO3 ceramics with a composition of (Pb0.88xCaxSm0.08) (Ti0.98Mn0.02)O3 were created. We were able to demonstrate that adding Ca to PbTiO3-based ceramics allows for substantially larger thickness electromechanical coupling coefficients (> 0:57) while maintaining tiny planar electromechanical coupling coefficients (kp). These doped ceramics have undergone microstructural and compositional studies utilizing an X-ray diffractometer (XRD) and scanning electron microscope (SEM).