Phase transitions ofPb(ZrxTi1−x

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

“…7a), in reasonable agreement with previous estimates for MPB compositions of PZT. 53 The Landau coefficients for each composition were determined by linearly interpolating between the values provided by Haun et al 49 Interestingly, it was found that both phases were stable in the stress-free state, regardless of the composition. However, while both phases were stable, only one represented the global energetic minimum.…”

High-resolution synchrotron x-ray diffraction study of Zr-rich compositions of Pb(ZrxTi1−x)O3 (0.525⩽x⩽0.60): Evidence for the absence of the rhombohedral phase

“…We present here the results of Rietveld analysis of the powder synchrotron XRD data which reveals that the structure of PZT for x=0.525 is monoclinic of M A type, and not a mixture of (a) T and R [1][2], (b) coexistence of M A and T [4,16] and (c) coexistence of R and M A [17], proposed by the pervious workers. More significantly, our results suggest the absence of any rhombohedral phase on the Zr-rich side (x≥0.525) of the MPB raising doubts about the applicability of the widely believed notion of M A structure as the bridging phase between T and R phases.…”

Influence of lanthanum doping on the morphotropic phase boundary of lead zirconate titanate

“…The spontaneous polarization P s can be estimated with the cell parameters and the atomic positions of the Cm phase by the dipole moment equation P s Ϸ͑1 / V͚͒ i q i r i , where the summation is over the point charges q i at positions r i in a primitive cell volume V. 23 The lattice parameters for a rhombohedral phase, recalculated from the monoclinic cell to pseudocubic axes, have a c m / a pc ratio of around 1 and additionally If additionally Eq. ͑1͒ is fulfilled the structure can be described by rhombohedral microdomains.…”