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dc.creatorFilipović, Suzana
dc.creatorObradovic, Nina
dc.creatorKrstić, Jugoslav
dc.creatorScepanovic, M.
dc.creatorPavlović, Vladimir B.
dc.creatorPaunović, Vesna
dc.creatorRistic, M. M.
dc.date.accessioned2019-01-30T17:36:13Z
dc.date.available2019-01-30T17:36:13Z
dc.date.issued2013
dc.identifier.issn0925-8388
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/1274
dc.description.abstractIn this article the influence of ball miling process on structure of MgO-TiO2 system, as well as the electrical properties of samples after sintering, was investigated. The mixtures of MgO-TiO2 powders were mechanically activated in a planetary ball mill for the time period from 0 to 120 min. The influence of mechanical activation and sintering on the lattice vibrational spectra was studied by Raman spectroscopy at room temperature. Structural investigations have been performed on produced powders. Nitrogen adsorption method was used to determine the BET specific surface area and pore size distribution. Unusual results have been obtained: specific surface area continuosly decreased up to 40 min of activation and increased after that, reaching its minimun value of 5.5 m(2)/g. The Raman spectra of activated powders have shown that anatase modes have been decreasing in intensity and broadening as the time of activation extended. Also, the additional modes attributed to TiO2 II, srilankite and rutile phases started to appear as a consequence of activation. The small differences noticed in the Raman spectra of sintered samples have been explained by structural modification of MgTiO3 phase due to the presence of defects. The effects of activation and sintering process on microstructure were investigated by scanning electron microscopy (SEM). The electrical measurements showed difference in dielectric constant (epsilon(r)), loss tangent (tg delta) and specific resistance (rho) as a function of time of mechanical treatment.en
dc.publisherElsevier
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172057/RS//
dc.rightsrestrictedAccess
dc.sourceJournal of Alloys and Compounds
dc.subjectBall millingen
dc.subjectSEMen
dc.subjectRaman spectroscopyen
dc.subjectSinteringen
dc.subjectTitanatesen
dc.titleStructural characterization and electrical properties of sintered magnesium-titanate ceramicsen
dc.typearticle
dc.rights.licenseARR
dcterms.abstractРистиц, М. М.; Крстић, Југослав; Сцепановиц, М.; Филиповић, Сузана; Павловић, Владимир Б.; Обрадовиц, Нина; Пауновић, Весна;
dc.citation.volume555
dc.citation.spage39
dc.citation.epage44
dc.citation.other555: 39-44
dc.citation.rankaM21
dc.identifier.doi10.1016/j.jallcom.2012.12.040
dc.identifier.rcubConv_2922
dc.identifier.scopus2-s2.0-84871898069
dc.identifier.wos000314909700008
dc.type.versionpublishedVersion


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