Deconvolving Ferroelastic and Phase Transformation Toughening in Pb(Zr1−xTix)O3 and Pb1−yLay(Zr1−xTix)O3
Ferroelastic toughening in Pb(Zr1−x
)O3 (PZT) ceramics can be augmented by phase transformation toughening through the inclusion of partially stabilized
TZ (PZT–ZrO2). In order to deconvolve both these toughening modes, cubic Pb1−y
(PLZT) with and without zirconia (PLZT–ZrO2) was characterized. R curve and stress–strain behavior yielded a quantification of strong toughening and a lack for switching propensity that could be contrasted to PZT
and zirconia‐toughened PZT. A clear path for toughening of PZT for future application is therefore provided.