Calorimetric Investigation of Tricritical Behavior in Tetragonal Pb(ZrxTi1−x)O3

Stability of the monoclinic phase in the ferroelectric perovskitePbZr1−xTixNoheda1, Cox2, Shirane3 et al. 2000Phys. Rev. B535343451View full textAdd to dashboardCite

“…Figure 3 ͑top͒ shows the lattice parameters of PZT with xϭ0.51 as a function of temperature. The paraelectric-ferroelectric phase transition at T Ӎ660 K is of second order, as expected, 32 and the ferroelectric phase is purely tetragonal down to 100 K. Below this temperature, structural changes can be noticed; in particular, the tetragonal (h0h) t and (hhh) t reflections broaden markedly. This is apparent in the lower part of Fig.…”

Classification of transition temperature behavior in ferroelectric PbTiO3–Bi(Me′Me″)O3 solid solutions

“…16 In Sr-and Ba-based complex perovskites, Colla et al 17 suggested that the onset of octahedral tilt transitions occurs above room temperature only for systems within the tolerance factor range 0.98ഛ t ഛ 0.99. In the PbTiO 3 -Bi͑MeЈMeЉ͒O 3 systems, it was hypothesized that lower t end members will increase the T c of morphotropic phase boundary compositions, as published earlier by Eitel and co-workers.…”

Enthalpies of Formation of Lead Zirconate Titanate (PZT) Solid Solutions

“…Prior studies (12) have shown that careful control of lead stoichiometry, precursor decomposition, calcination, and annealing are important to obtain high-quality samples suitable for calorimetric investigations. Detailed characterization by conventional and high-resolution X-ray di!raction, di!erential scanning calorimetry, and electron microprobe analysis (6,10,11) were used to ensure phase purity, crystallinity, and chemical homogeneity in the samples used in this study. The samples were stoichiometric and homogeneous within the uncertainties of microprobe analysis ($0.5 wt% oxides).…”