Hybrid Bioceramic: A Synergistic Platform for Structural Reinforcement and Bioelectric Stimulation Toward Smart Medical Devices

ABSTRACT As the rise of smart implants has led to a transformation in healthcare, the hybrid biomaterials have garnered significant attention due to the increasing demand for mechanical stability and functional properties. This study presents a barium titanate (BTO)‐yttria stabilized zirconia (YSZ) bioceramic with varying compositions (between 40 wt.% and 60 wt.%), and sintering temperatures (1250°C–1450°C) to achieve clinically feasible structural integrity, piezoelectricity, mechanical strength, and a cell‐friendly environment. By combining a piezoelectric phase with a mechanically robust ceramic phase, the hybrid system enables energy harvesting from physiological movements while maintaining long‐term mechanical durability. The results demonstrate that both BTO and YSZ exhibit stable coexistence within a single material, segregated in a manner that preserves their respective structural and functional properties. Increasing BTO content enhances the piezoelectric coefficient ( d ₃₃ ), while YSZ contributes to higher hardness and fracture toughness. Optimal sintering at 1350°C yields a dense microstructure that strikes a balance between electrical and mechanical performance. Furthermore, microstructural analysis via Raman spectroscopy, scanning electron microscopy, and X‐ray diffraction confirms phase stability and controlled grain growth. The findings suggest that the BTO–YSZ bioceramic has strong potential for co‐design of biofunctional and mechanically robust hybrid biomaterials, paving the way toward next‐generation smart biomedical implants.