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Preparation and Properties of Lead Zirconate Stannate Titanate Sintered by Spark Plasma Sintering

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Lanthanum-doped lead zirconate stannate titanate ceramics were successfully compacted to full density by spark plasma sintering (SPS). SPS samples densified at 900° or 950°C exhibit nearly full density and fine grain size (about 300 nm). Compared with samples from conventional sintering (CS), SPS samples show larger permittivity accompanied by a deterioration in dielectric loss and special strain hysteresis loops similar to those of ferroelectric relaxors, with a diffuse AFE–FE phase transition and less field-induced longitudinal strain. The differences in the properties of SPS and CS materials are attributed to the variations of the resultant microstructures, especially the grain size, of the ceramics.
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Keywords: dielectric materials/properties; hysteresis; spark plasma sintering

Document Type: Research Article

Affiliations: 1: Max-Planck-Institut für Metallforschung and Institut für Nichtmetallische Anorganische Materialien, Pulvermetallurgisches Laboratorium, Universität Stuttgart, 70569 Stuttgart, Germany 2: Department of Inorganic Chemistry, Arrhenius Laboratory, Stockholm University, 10691 Stockholm, Sweden

Publication date: April 1, 2004

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