Show simple item record

dc.creatorPaunović, Vesna
dc.creatorMitić, Vojislav V.
dc.creatorŽivković, Ljiljana
dc.creatorMiljković, Miroslav
dc.date.accessioned2017-06-10T15:45:07Z
dc.date.issued2012
dc.identifier.isbn9788691562700
dc.identifier.urihttp://dais.sanu.ac.rs/123456789/526
dc.description.abstractDoped BaTiO3-ceramics is very interesting for its application as resistors with PTCR, multilayer ceramics capacitors, thermal sensors etc. Ho doped BaTiO3 ceramics, with different Ho2O3 content, ranging from 0.01 to 1.0 wt% Ho, were investigated regarding their microstructural and dielectric characteristics. The samples were prepared by the conventional solid state reaction and sintered at 1320°, 1350 °C and 1380°C in an air atmosphere for 4 hours. The grain size and microstructure characteristics for various samples and their phase composition were carried out using a scanning electron microscope SEM equipped with EDS system. SEM analysis of Ho/BaTiO3 doped ceramics showed that in samples doped with a low level of rare-earth ions, the grain size ranged from 10-40mm, while with the higher dopant concentration the abnormal grain growth is inhibited and the grain size ranged between 2-10μm. Dielectric measurements were carried out as a function of temperature up to180°C. The low doped samples sintered at 1380°C, display the high value of dielectric permittivity at room temperature, 2500 for 0.01Ho/BaTiO3. A nearly flat permittivity-response was obtained in specimens with higher additive content. Using a modified Curie-Weiss low the Curie constant (C/) and a critical exponent γ were calculated. The obtained values of γ pointed out the diffuse phase transformation in heavily doped BaTiO3 samples.en
dc.format(2012) 10-10
dc.formatapplication/pdf
dc.languageen
dc.publisherBelgrade : Serbian Ceramic Society
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172057/RS//
dc.rightsopenAccess
dc.sourceThe First Serbian Ceramic Society Conference "Advanced Ceramics and Application" May 10-11, 2012: Program and the Book of Abstractsen
dc.subjectBaTiO3 ceramics
dc.subjectHo2O3
dc.subjectmicrostructure
dc.subjectdielectric properties
dc.titleHo2O3 Additive Effects on Microstructure and Dielectrical Properties of BaTiO3 Ceramicsen
dc.typeconferenceObject
dc.rights.licenseBY-NC-ND
dcterms.abstractМиљковић, Мирослав; Живковић, Љиљана; Митић, Војислав В.; Пауновић, Весна;
dc.citation.spage10
dc.citation.epage10
dc.type.versionpublishedVersion
dc.identifier.fulltexthttp://dais.sanu.ac.rs/bitstream/handle/123456789/526/Paunovic_ACAI.pdf


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record