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Title: The properties of PBZTS ceramics near osthorhombic-rhombohedral morphotropic phase boundary
Authors: Brzezińska, Dagmara
Skulski, Ryszard
Wawrzała, Paweł
Keywords: PBZT and PBZTS ceramics; phase transitions; dielectric properties
Issue Date: 2011
Citation: "Archives of Metallurgy and Materials" Vol. 56 (4) (2011), s. 1243-1247
Abstract: We present the results of obtaining and investigations of (Pb1􀀀xBax)((Zr1􀀀yTiy)1􀀀zSnz)O3 (PBZTS) ceramics with x=const=0.2, y=const=0.08, z=0, 0.02, 0.04, 0.06 and 0.08. Ceramic samples have been obtained by conventional ceramic technology from oxides PbO, ZrO2, TiO2, SnO2 and barium carbonate BaCO3. The calcination of powders was performed at Tcalc=850 C/tcalc=3h and next calcinated powders were pressed into discs and were sintered at Ts=1250 C/ts=4h using free sintering (FS) method. For such obtained samples the following investigations have been done: EDS, XRD, microstructure of fractured samples, dielectric measurements, P 􀀀 E hysteresis loops investigations at various temperatures and electromechanical measurements at the room temperature using optical displacement meter. Investigated compositions are close to rhombohedral-orthorhombic morphotropic phase boundary. The results of dielectric and electromechanical properties are typical for ferroelectric materials.
ISSN: 1733-3490
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