• Domain engineering and phase-boundary manipulation across PbTiO3-based ceramics yields large electromechanical responses; dopant-induced shifts near morphotropic phase boundaries raise dielectric constants and planar couplings, with domain reorientation insights from multiple doping and PLZT studies [1], [18], [13], [2], [12].

• Transformation toughening and martensitic-like crack-tip transformations provide substantial toughness enhancements in ceramics, complemented by fracture-mechanics frameworks and microstructural considerations across the literature [6], [15], [14], [16], [10].

• Grain size, porosity, and microstructure govern strength and fracture energy, supported by systematic experiments and modeling across oxide ceramics to reveal strong size- and anisotropy-driven effects [5], [16], [9], [8], [19].

• Sintering and powder processing emerge as central levers for ceramic performance, demonstrated by agglomerate-sinterability work and processing-controlled microstructure in mullite and related systems [11], [20].