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Ho2O3 Additive Effects on BaTiO3 Ceramics Microstructure and Dielectric Properties
dc.contributor | Ristić, Momčilo M. | |
dc.creator | Paunović, Vesna | |
dc.creator | Mitić, Vojislav V. | |
dc.creator | Miljković, Miroslav | |
dc.creator | Pavlović, Vera P. | |
dc.creator | Živković, Ljiljana | |
dc.date.accessioned | 2018-03-06T08:26:31Z | |
dc.date.available | 2018-03-06T08:26:31Z | |
dc.date.issued | 2012 | |
dc.identifier.issn | 1820-7413 | |
dc.identifier.uri | http://dais.sanu.ac.rs/123456789/194 | |
dc.identifier.uri | https://vinar.vin.bg.ac.rs/handle/123456789/7364 | |
dc.description.abstract | Doped BaTiO 3-ceramics is very interesting for their application as PTCR resistors, multilayer ceramic capacitors, thermal sensors etc. Ho doped BaTiO 3 ceramics, with different Ho 2O 3 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° and 1380°C in an air atmosphere for 4 hours. The grain size and microstructure characteristics for various samples and their phase composition was carried out using a scanning electron microscope (SEM) equipped with EDS system. SEM analysis of Ho/BaTiO 3 doped ceramics showed that in samples doped with a rare-earth ions low level, the grain size ranged from 20-30μμm, while with the higher dopant concentration the abnormal grain growth is inhibited and the grain size ranged between 2-10μμm. 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, 2400 for 0.01 Ho/BaTiO 3. A nearly flat permittivity-response was obtained in specimens with higher additive content. Using a Curie-Weiss low and modified CurieWeiss low the Curie constant (C), Curie temperature (Tc) and a critical exponent of nonlinearity (γ) were calculated. The obtained value of γ pointed out that the specimens have almost sharp phase transition. | en |
dc.format | 44 2 (2012) 223-233 | |
dc.format | application/pdf | |
dc.language | en | |
dc.publisher | Belgrade : International Institute for the Science of Sintering | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172057/RS// | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.source | Science of Sintering | en |
dc.subject | BaTiO3 | |
dc.subject | barium titanate | |
dc.subject | dielectric properties | |
dc.subject | microstructure | |
dc.subject | sintering | |
dc.title | Ho2O3 Additive Effects on BaTiO3 Ceramics Microstructure and Dielectric Properties | en |
dc.type | article | |
dc.rights.license | BY-NC-ND | |
dcterms.abstract | Пауновић, Весна; Митић, Војислав В.; Миљковић, Мирослав; Павловић, Вера П.; Живковић, Љиљана; | |
dc.citation.spage | 223 | |
dc.citation.epage | 233 | |
dc.identifier.wos | 000318148600010 | |
dc.identifier.doi | 10.2298/SOS1202223P | |
dc.identifier.scopus | 2-s2.0-84866404412 | |
dc.identifier.fulltext | https://vinar.vin.bg.ac.rs//bitstream/id/13977/7358.pdf |