Mechanochemical synthesis of lead magnesium niobate ceramics in iron media

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorBrankovic, Z.
dc.creatorBrankovic, G.
dc.creatorVukotic, V.
dc.creatorTararam, R.
dc.creatorVarela, José Arana
dc.date2014-05-20T15:33:46Z
dc.date2016-10-25T18:10:28Z
dc.date2014-05-20T15:33:46Z
dc.date2016-10-25T18:10:28Z
dc.date2008-04-01
dc.date.accessioned2017-04-06T00:34:48Z
dc.date.available2017-04-06T00:34:48Z
dc.identifierMetallurgical and Materials Transactions A-physical Metallurgy and Materials Science. New York: Springer, v. 39A, n. 4, p. 875-879, 2008.
dc.identifier1073-5623
dc.identifierhttp://hdl.handle.net/11449/42314
dc.identifierhttp://acervodigital.unesp.br/handle/11449/42314
dc.identifier10.1007/s11661-007-9463-4
dc.identifierWOS:000253754500015
dc.identifierWOS000253754500015.pdf
dc.identifierhttp://dx.doi.org/10.1007/s11661-007-9463-4
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/884966
dc.descriptionThe possibility of mechanochemical synthesis of the lead magnesium niobate (PMN) powders of the composition Pb(Mg(1/3)Nb(2/3))O(3) in iron vials was investigated. According to X-ray and energy-dispersive spectroscopy (EDS) analysis of the obtained powder mixtures, milling in iron vials resulted in incorporation of Fe and formation of PFN of composition Pb(Fe(1/2)Nb(1/2))O(3) simultaneously with formation of PMN. Relative amounts of PMN and PFN were determined based on values of Curie temperature and lattice constant of perovskite phase. Although only 1 wt pct of Fe was incorporated, a stoichiometry of the system was significantly changed, resulting in formation of pyrochlore phase and excess MgO. Single-phase perovskite was obtained when the excess of PbO and Nb(2)O(5) was added during mechanochemical synthesis. Because the dielectric properties were worse than expected, the alternative ways for improvement of dielectric properties were tried and discussed.
dc.languageeng
dc.publisherSpringer
dc.relationMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.titleMechanochemical synthesis of lead magnesium niobate ceramics in iron media
dc.typeOtro


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