Приказ основних података о документу
Mechanochemical synthesis and electrical conductivity of nanocrystalline δ-Bi2O3 stabilized by HfO2 and ZrO2
dc.creator | Zdujić, Miodrag | |
dc.creator | Poleti, Dejan | |
dc.creator | Jovalekić, Čedomir | |
dc.creator | Karanović, Ljiljana | |
dc.date.accessioned | 2017-06-10T15:45:07Z | |
dc.date.accessioned | 2023-01-19T10:57:30Z | |
dc.date.available | 2023-01-19T10:57:30Z | |
dc.date.issued | 2009 | |
dc.identifier.issn | 0352-5139 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5532 | |
dc.description.abstract | A powder mixture of α-Bi2O3 and HfO2, in the molar ratio 2:3, was mechanochemically treated in a planetary ball mill under air, using zirconium oxide vials and balls as the milling medium. After 50 h of milling, the mechanochemical reaction led to the formation of a nanocrystalline δ-Bi2O3 phase (fluorite-type solid solution Bi0.78Hf0.59Zr0.63O3.61), with a crystallite size of 20 nm. The mechanochemical reaction started at a very beginning of milling accompanied by an accumulation of ZrO2 arising from the milling tools. The samples prepared after various milling times were characterized by X-ray powder diffraction and DSC analysis. The electrical properties of the as-milled and pressed Bi0.78Hf0.59Zr0.63O3.61 powder were studied using impedance spectroscopy in the temperature range from 100 to 700°C under air. The electrical conductivity was determined to be 9.43×10-6 and 0.080 S cm-1 for the temperatures of 300 and 700°C, respectively. | en |
dc.description.abstract | Smeša prahova α-Bi2O3 i HfO2 u molarnom odnosu 2:3 mehanohemijski je tretirana u planetarnom mlinu u atmosferi vazduha, koristeći cirkonijumske posude i kuglice kao medijum za mlevenje. Posle 50 h mlevenja, mehanohemijska reakcija dovodi do stvaranja nanokristalne δ-Bi2O3 faze (čvrsti rastvor fluoritske strukture Bi0,78Hf0,59Zr0,63O3,61), veličine kristalita 20 nm. Mehanohemijska reakcija otpočinje u samom početku mlevenja i praćena je akumulacijum ZrO2 koji potiče od medijuma za mlevenje. Uzorci dobijeni posle različitih vremena mlevenja karakterisani su rendgenskom strukturnom i termijskom analizom. Električna svojstva mlevenih i presovanih Bi0,78Hf0,59Zr0,63O3,61 prahova ispitivana su impedansnom spektroskopijom u temperaturnom opsegu od 100 do 700°C. Dobijena električna provodnost je 9,43·10-6 i 0,080 S cm-1 za temperaturu 300 i 700°C, redom. | sr |
dc.format | 74 12 (2009) 1401-1411 | |
dc.format | application/pdf | |
dc.language | en | |
dc.publisher | Belgrade : Serbian Chemical Society | |
dc.relation | info:eu-repo/grantAgreement/MESTD/MPN2006-2010/142030/RS// | |
dc.relation | info:eu-repo/grantAgreement/MESTD/MPN2006-2010/141027/RS// | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.source | Journal of the Serbian Chemical Society | en |
dc.subject | bismuth(III) oxide | |
dc.subject | X-ray diffraction | |
dc.subject | electrical conductivity | |
dc.subject | fuel cells | |
dc.subject | bizmut(III) oksid | |
dc.title | Mechanochemical synthesis and electrical conductivity of nanocrystalline δ-Bi2O3 stabilized by HfO2 and ZrO2 | en |
dc.type | article | |
dc.rights.license | BY-NC-ND | |
dc.citation.epage | 1411 | |
dc.citation.issue | 12 | |
dc.citation.rank | M23 | |
dc.citation.spage | 1401 | |
dc.citation.volume | 74 | |
dc.identifier.doi | 10.2298/JSC0912401Z | |
dc.identifier.fulltext | http://TechnoRep.tmf.bg.ac.rs/bitstream/id/14480/171.pdf | |
dc.identifier.rcub | https://hdl.handle.net/21.15107/rcub_dais_174 | |
dc.identifier.scopus | 2-s2.0-77349118499 | |
dc.identifier.wos | 000275494600006 | |
dc.type.version | publishedVersion |