Phase composition and dielectric properties of spark plasma sintered PbZr0.52Ti0.48O3

In the present work, lead zirconate titanate PbZr0.52Ti0.48O3 (PZT) bulk ceramic powders having composition aimed for morphotropic phase boundary (MPB) were synthesized by conventional solid-state reaction and sintered by novel spark plasma sintering (SPS) method. The samples sintered at four differ...

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Bibliographic Details
Published inMaterials research express Vol. 7; no. 3; pp. 036301 - 36312
Main Authors Gupta, Abhishek Kumar, Sil, Anjan
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.03.2020
Subjects
Ceramic powders
Dielectric properties
ferroelectric
Lead oxides
Lead zirconate titanates
microstructure
Phase composition
Plasma sintering
Room temperature
Sintering (powder metallurgy)
Spark plasma sintering
Sublimation
Temperature
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Summary:In the present work, lead zirconate titanate PbZr0.52Ti0.48O3 (PZT) bulk ceramic powders having composition aimed for morphotropic phase boundary (MPB) were synthesized by conventional solid-state reaction and sintered by novel spark plasma sintering (SPS) method. The samples sintered at four different temperatures of 800, 850, 900 and 950 °C are found to have almost same density. The effect of SPS temperature on microstructure, phase constituents and dielectric properties is investigated. Rietveld refinement of XRD patterns of samples was carried out to estimate the phase composition revealing that the enhanced dielectric response is due to the presence of monoclinic phase along with the tetragonal phase in the synthesized material. The maximum room temperature dielectric constant r ∼950 was found for the sample sintered at 900 °C. It is observed that the temperature has a significant role in resulting change of phase composition and dielectric performance of all the samples due to sublimation of PbO content.
Bibliography:MRX-119655.R1
ISSN:2053-1591
DOI:10.1088/2053-1591/ab7911