Effect of magnesium on structure and properties of LiNbO3 prepared from polymeric precursors

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:17:58Z
dc.date.available2014-05-20T14:17:58Z
dc.date.created2014-05-20T14:17:58Z
dc.date.issued2002-01-01
dc.identifierCeramics International. Oxford: Elsevier B.V., v. 28, n. 3, p. 265-270, 2002.
dc.identifier0272-8842
dc.identifierhttp://hdl.handle.net/11449/25394
dc.identifier10.1016/S0272-8842(01)00089-X
dc.identifierWOS:000175311600006
dc.description.abstractThe effect of magnesium addition on the phase formation and electric properties of LiNbO3 powder prepared from polymeric precursor was analyzed. It was shown that the unit-cell volume of the rhombohedral phase decreased with increasing magnesium concentration. Small amounts of secondary phases were observed in LiNbO3 powder doped with 5 and 10 mol% Mg+2. These results indicated that the Mg+2 ion was substituted for niobium ion in the rhombohedral phase. The addition of Mg+2 promotes densification of LiNbO3 ceramics. It was noticed that the increase in additive concentration leads to a decrease of electric properties, K-p and d(33). This is due to formation of LiNb3O8 and MgNb2O6 phases at the grain boundaries. (C) 2002 Elsevier B.V. Ltd and Techna S.r.l. All rights reserved.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationCeramics International
dc.relation3.057
dc.relation0,784
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectcalcination
dc.subjectorganic precursors
dc.subjectX-ray methods
dc.subjectelectrical properties
dc.subjectniobates
dc.titleEffect of magnesium on structure and properties of LiNbO3 prepared from polymeric precursors
dc.typeArtículos de revistas


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