Nanodomain structure ofPb[Zr1−xTix]O3

Abstract

In recent years, the stability field of a monoclinic phase at the morphotropic phase boundary in lead zirconate titanate, Pb͓Zr 1−x Ti x ͔O 3 , has been under discussion. In the present study, we investigated samples in the compositional range between 0.40ഛ x ഛ 0.475 and x = 0.55 using high-resolution synchrotron x-ray diffraction in combination with transmission electron microscopy and electron paramagnetic resonance to correlate average structure and microstructural information. It is shown that the microstructure plays a crucial role in the analysis of diffraction data. The appearance of intensity in diffraction patterns formerly linked to a monoclinic phase ͓B. Noheda et al., Phys. Rev. B 61, 8687 ͑2000͔͒ can directly be correlated to a miniaturization of the average domain structure of the material visible in the presence of nanodomains. The internal symmetry of the nanodomains is not necessarily monoclinic due to coherence effects in diffraction and is discussed with respect to martensitic theory.

Composition-dependent polarization switching behaviors of (111)-preferred polycrystalline Pb(ZrxTi1−x)O3 thin films

“…We compare the details of our studies with earlier work, including electron paramagnetic 3 resonance studies. 9,10,11 Further, our work can also explain the systematic changes in P-V hysteresis loops with variations in x.…”

High-temperature poling of ferroelectrics

“…In PZT samples of morphotropic composition, nanodomain structures can directly be linked to the detection of intensity previously interpreted as a monoclinic phase but are not necessarily of monoclinic internal symmetry. 22 Between 320 and 500°C, a single phase model with cubic Pm3m structure was used. The phase transition point was determined by analyzing the pseudocubic ͕200͖ c reflections and the overall 2 of the refinement.…”

Nonlinear stress-strain behavior and stress-induced phase transitions in soft Pb(Zr1−xTix)OSeo1, Franzbach2, Koruza3 et al. 2013Phys. Rev. B496261View full textAdd to dashboardCite

“…1 Some investigators have attributed this to the coexistence of the tetragonal and rhombohedral phases 15 or presence of an additional monoclinic Cm phase, 16 while others have shown the existence of nanopolar regions in the MPB region of PZT which could result in enhanced properties. 17,18 The reduction of domain wall energies and the resulting nanometer scale domains has been predicted by Jin et al, who applied the adaptive state theory of martensites to ferroelectrics. 19,20 As the composition is moved further from the MPB in either the tetragonal or rhombohedral direction there is a corresponding increase in the coercive stress and a decrease in the remanent strain.…”