Low-temperature phase transformations of PZT in the morphotropic phase-boundary region

Abstract

We present anelastic and dielectric spectroscopy measurements of PbZr(1-x)Ti(x)O(3) with 0.455 < x < 0.53, which provide new information on the low temperature phase transitions. The tetragonal-to-monoclinic transformation is first-order for x < 0.48 and causes a softening of the polycrystal Young's modulus whose amplitude may exceed the one at the cubic-to-tetragonal transformation; this is explainable in terms of linear coupling between shear strain components and tilting angle of polarization in the monoclinic phase. The transition involving rotations of the octahedra below 200 K is visible both in the dielectric and anelastic losses, and it extends within the tetragonal phase, as predicted by recent first-principle calculations.

4 pages, 4 figures

References in corpus (2)

• Phase diagram of Pb(Zr,Ti)O3 solid solutions from first principles
• Possible Coexistence of Rotational and Ferroelectric Lattice Distortions in Rhombohedral PZT

Cited by in corpus (11)

• Phase transitions and phase diagram of the ferroelectric perovskite NBT-BT by anelastic and dielectric measurements
• Multiple soft-mode vibrations of lead zirconate
• Effects of coupling between octahedral tilting and polar modes on the phase diagram of PbZr1-xTixO3 (PZT)
• Quantitative evaluation of the piezoelectric response of unpoled ferroelectric ceramics from elastic and dielectric measurements: tetragonal BaTiO${}_3$
• Octahedral tilting, monoclinic phase and the phase diagram of PZT
• Piezoelectric softening in ferroelectrics: ferroelectric versus antiferroelectric PbZr${}_{1-x}$Ti${}_x$O${}_3$
• Ground state of (Pb0.94Sr0.06)(Zr0.530Ti0.470)O3 in the morphotropic phase boundary region: Evidence for a monoclinic Cc space group
• Rotational instability of the electric polarization and divergence of the shear elastic compliance
• Effects of aging and annealing on the polar and antiferrodistortive components of the antiferroelectric transition in PZT
• Elastic aging from coexistence and transformations of ferroelectric and antiferroelectric states in PZT
• Space group symmetries of the phases of (Pb0.94Sr0.06)(ZrxTi1-x)O3 across the antiferrodistortive phase transition in the composition range 0.620<x<0.940