The synergistic effects of Nb/Mn and Sb/Mn on the microstructure and electrical characteristics of BaTiO3 based ceramics

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorZivkovic, Lj M.
dc.creatorMitic, V. V.
dc.creatorPaunovic, V. V.
dc.creatorVracar, Lj M.
dc.creatorStojanovic, B. D.
dc.creatorPeron, K.
dc.creatorZagete, M. A.
dc.date2014-05-27T11:21:35Z
dc.date2016-10-25T18:21:01Z
dc.date2014-05-27T11:21:35Z
dc.date2016-10-25T18:21:01Z
dc.date2005-08-22
dc.date.accessioned2017-04-06T01:14:18Z
dc.date.available2017-04-06T01:14:18Z
dc.identifierCeramic Transactions, v. 167, p. 117-125.
dc.identifier1042-1122
dc.identifierhttp://hdl.handle.net/11449/68368
dc.identifierhttp://acervodigital.unesp.br/handle/11449/68368
dc.identifier10.1002/9781118408186.ch13
dc.identifier2-s2.0-23744468223
dc.identifierhttp://dx.doi.org/10.1002/9781118408186.ch13
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/889712
dc.descriptionThe microstructure and dielectric properties of Nb-Mn or Sb-Mn codoped BaTiO3 compositions were investigated. Starting ceramics powders were prepared by Pechini method. The composites were sintered at 1310°C and 1330°C in an air atmosphere for two hours. The microstructure and compositional investigations were done with SEM equipped with EDS. Two distinguish microstructure regions are observed in Nb/0.05Mn doped BaTiO 3 ceramics sintered at low temperature. The first, large one, with grain sizes from 5-40 μm and the second region with small grain sizes from 1 to 5 μm. Sintering at higher temperature, independent of Mn content, enables to achieve a uniform microstructure with grains less than 6 μm. In Sb/Mn doped ceramics, for both sintering temperatures, bimodal microstructures with fine grained matrix and grains up to 10 μm is formed. The highest value of permittivity at room temperature and the greatest change of permittivity in function of temperature are observed in Nb/0.01Mn doped ceramics compared to the same ones in Sb/Mn doped ceramics. The greatest shift of Curie temperature towards lower temperature has been noticed in Sb/Mn BaTiO3 ceramics compared to others samples. In all investigated samples the dielectric loss after initially large values at low frequency maintains a constant value for f>3 kHz.
dc.languageeng
dc.relationCeramic Transactions
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectAntimony
dc.subjectBarium titanate
dc.subjectCeramic materials
dc.subjectDielectric losses
dc.subjectGrain size and shape
dc.subjectManganese
dc.subjectMicrostructure
dc.subjectNatural frequencies
dc.subjectNiobium
dc.subjectPermittivity
dc.subjectScanning electron microscopy
dc.subjectSintering
dc.subjectCurie temperature
dc.subjectPechini method
dc.subjectSintering temperatures
dc.subjectSynergistic effects
dc.subjectDielectric properties
dc.titleThe synergistic effects of Nb/Mn and Sb/Mn on the microstructure and electrical characteristics of BaTiO3 based ceramics
dc.typeOtro


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