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Effect of technological regimes on the properties of solid solutions of (1-x) PbZrO3 – x PbTiO3

Abstract

Effect of technological regimes on the properties of solid solutions of (1-x) PbZrO3 – x PbTiO3

Dudkina S.I., Shilkina L.A., Andryushina I.N., Reznichenko L.A., Razumovskaya O.N.

Incoming article date: 18.05.2015

In this work we continue the study of ferroelectric compositions of different composition – basics of functional materials piezo technical destination. Considered are solid solutions (TR) binary system (1-x) PbZrO3 – x PbTiO3 (PZT), up to the present time remaining as base of almost all commercially available functional materials. Studied the impact of technological regimes on the properties of solid solutions with 0.135 ≤ x ≤ 0.145, 0.16 ≤ x ≤ 0.18, 0.37 ≤ x ≤ 0.58, 0.75 ≤ x ≤ 0.77, 0.795 ≤ x ≤ 0.805, the research concentration step Δx = 0.0025. The sintering temperature was varied from 1200 °C to 1240 °C, the duration of the extracts 2 and 3 hours. It is established that the structural parameters remain almost constant under variations of conditions in process their production in all ranges (rhombohedral, tetragonal and morphotropic) of the concentrations, and the change of relative dielectric permittivity of unpolarized samples is not more than (10÷12) %. It was shown that the study of solid solutions of multicomponent systems on the basis of lead zirconate titanate is possible with the minimal concentration of the step ∆x = 0.25 mol.%. Application of the considered techniques in the fabrication of functional materials for various purposes provides high reproducibility of their parameters. Obtained results can be useful for development of new ferro-piezoelectric materials on the basis of other complex oxides.

Keywords: solid solution, lead zirconate titanate, technology, crystal structure, dielectric permittivity