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1、HomeSearchCollectionsJournalsAboutContactusMyIOPscienceDielectricpropertiesoffromtoHzinthetemperaturerange85-700KThisarticlehasbeendownloadedfromIOPscience.Pleasescrolldowntoseethefulltextarticle.1997J.Phys.:Condens.Matter93081(http://iopscience.iop.org/0953-8984/9/1
2、4/023)Viewthetableofcontentsforthisissue,orgotothejournalhomepageformoreDownloaddetails:IPAddress:123.126.50.140Thearticlewasdownloadedon28/11/2011at01:58Pleasenotethattermsandconditionsapply.J.Phys.:Condens.Matter9(1997)3081–3088.PrintedintheUKPII:S0953-8984(97)7691
3、4-5DielectricpropertiesofBa(Ti,Ce)Ofrom102to105Hzin3thetemperaturerange85–700KZhiYu,ChenAng,ZhiJing,PMVilarinhoandJLBaptistaDepartmentofCeramicandGlassEngineering,UniversityofAveiro,3810Aveiro,PortugalReceived5August1996,infinalform3December1996Abstract.Ba(Ti1−xCex)O3
4、ceramicswithxD0:1,0.2,0.3,0.33,0.4and0.5havebeensynthesizedbythemixedoxidemethod.DielectricmeasurementswereperformedforBa(Ti1−xCex)O3ceramicsfrom102to105Hzinthetemperaturerange85–700K.ThedielectricmeasurementsconfirmedthatthesolidsolutionrangeextendsuptoaboutxD0:3.Int
5、hesolidsolutions,thetemperatureofthepermittivitymaximumwasshiftedatarateof−7K/mol%CeatomandthepermittivitymaximumdecreasedwithincreasingCecontent.ThetemperatureandfrequencydependenceofthepermittivitywasfittedbytheCurie–Weisslawbeyondthetransitiontemperatureandcharacte
6、rizedbyparametersthatareusedtodescriberelaxorbehaviour.1.IntroductionAseriesofdielectricceramicswiththegeneralcompositionMBa3Ti2O8C,whichisintheBaO-richregionoftheBaO–M2O3–TiO2(MDY,Nd,Sm,etc)system,hasbeenreportedbythepresentauthors[1,2].Thesesingle-phasecompoundsbe
7、longtothehexagonalcrystalsystem.WhenMDCe,theresultsofx-raydiffraction(XRD)analysisindicatethatCeBa3Ti2O8Cbelongstothetetragonalsystem.Inaddition,itwasrecognizedthatthecompositionCeBa3Ti2O8CwasformedbyasolidsolutionofBaTiO3andBaCeO3.Basedontheseobservations,aserieso
8、fBa(Ti1−xCex)O3ceramicswassynthesized[3].TheXRDresultsindicatethatthelimitofsolidsolubilityisaboutxD0:30whenBa(Ti1−xCex)O3ceramicsa
