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Structural and electrical properties of the 2Bi2O3·3ZrO2 system
dc.creator | Jovalekić, Čedomir | |
dc.creator | Zdujić, Miodrag | |
dc.creator | Poleti, Dejan | |
dc.creator | Karanović, Ljiljana | |
dc.creator | Mitrić, Miodrag | |
dc.date.accessioned | 2018-07-29T20:17:49Z | |
dc.date.available | 2018-07-29T20:17:49Z | |
dc.date.issued | 2008 | |
dc.identifier.issn | 0022-4596 (Print) | |
dc.identifier.issn | 1095-726X | |
dc.identifier.uri | https://dais.sanu.ac.rs/123456789/3582 | |
dc.description.abstract | Powder mixtures of α-Bi2O3 (bismite) and monoclinic m-ZrO2 (baddeleyite) in the molar ratio 2:3 were mechanochemically and thermally treated with the goal to examine the phases, which may appear during such procedures. The prepared samples were characterized by X-ray powder diffraction, differential scanning calorimetry (DSC), electrical measurements, as well as scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The mechanochemical reaction leads to the gradual formation of a nanocrystalline phase, which resembles δ-Bi2O3, a high-temperature Bi2O3 polymorph. Isothermal sintering in air at a temperature of 820 °C for 24 h followed by quenching to room temperature yielded a mixture of ZrO2-stabilized β-Bi2O3 and m-ZrO2 phases, whereas in slowly cooled products, the complete separation of the initial α-Bi2O3 and m-ZrO2 constituents was observed. The dielectric permittivity of the sintered samples significantly depended on the temperature. The sintered and quenched samples exhibited a hysteresis dependence of the dielectric shift, showing that the ZrO2-doped β-Bi2O3 phase possess ferroelectric properties, which were detected for the first time. This fact, together with Rietveld refinement of the β-Bi2O3/m-ZrO2 mixture based on neutron powder diffraction data showed that ZrO2-doped β-Bi2O3 has a non-centrosymmetric structure with P over(4, -) 21 c as the true space group. The ZrO2 content in the doped β-Bi2O3 and the crystal chemical reasons for the stabilization of the β-Bi2O3 phase by the addition of m-ZrO2 are discussed. © 2008 Elsevier Inc. All rights reserved. | en |
dc.relation | info:eu-repo/grantAgreement/MESTD/MPN2006-2010/141027/RS// | |
dc.relation | info:eu-repo/grantAgreement/MESTD/MPN2006-2010/142030/RS// | |
dc.rights | restrictedAccess | |
dc.source | Journal of Solid State Chemistry | |
dc.subject | Bi2O3 | |
dc.subject | ferroelectricity | |
dc.subject | mechanochemical treatment | |
dc.subject | ZrO2 | |
dc.title | Structural and electrical properties of the 2Bi2O3·3ZrO2 system | en |
dc.type | article | en |
dc.rights.license | ARR | |
dcterms.abstract | Полети, Дејан; Карановић, Љиљана; Митрић, Миодраг; Јовалекић, Чедомир; Здујић, Миодраг; | |
dc.citation.spage | 1321 | |
dc.citation.epage | 1329 | |
dc.citation.volume | 181 | |
dc.citation.issue | 6 | |
dc.identifier.wos | 000256857600007 | |
dc.identifier.doi | 10.1016/j.jssc.2008.02.038 | |
dc.identifier.scopus | 2-s2.0-44649097464 | |
dc.type.version | publishedVersion | |
dc.identifier.rcub | https://hdl.handle.net/21.15107/rcub_dais_3582 |