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dc.creatorLukić, Miodrag J.
dc.creatorJovalekić, Čedomir
dc.creatorMarković, Smilja
dc.creatorUskoković, Dragan
dc.date.accessioned2018-07-25T13:36:40Z
dc.date.available2018-07-25T13:36:40Z
dc.date.issued2015
dc.identifier.issn0025-5408
dc.identifier.urihttp://dais.sanu.ac.rs/123456789/3548
dc.description.abstractCorrelation between high-temperature electrical response and microstructural properties of dense hydroxyapatite with average grain size from micrometer to nanometer level in heating/cooling cycle was investigated. Grain interior and grain boundary contributions to overall conductivity were determined. Nanostructured hydroxyapatite exhibited enhanced grain interior conductivity, with significantly higher activation energy (∼2.4 eV) than that of coarsed microstructures (∼1.7 eV). This difference in activation energies is explained by the possible influence of dehydroxylation during materials fabrication procedure, which affected the amount of OH- ions as the main charge carriers. Grain boundary conductivity was similar for all microstructures, with activation energy above ∼2 eV, implying the OH- ions migration across grain boundaries. Electrical response in cooling cycle confirmed the trends found during heating. © 2014 Elsevier B.V. All rights reserved.
dc.publisherElsevier
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45004/RS//
dc.rightsrestrictedAccess
dc.sourceMaterials Research Bulletin
dc.titleEnhanced high-temperature electrical response of hydroxyapatite upon grain size refinement
dc.typearticleen
dc.rights.licenseARR
dcterms.abstractУскоковић, Драган; Лукић, Миодраг Ј.; Јовалекић, Чедомир; Марковић, Смиља;
dc.citation.spage534
dc.citation.epage538
dc.citation.volume61
dc.identifier.wos000347498700084
dc.identifier.doi10.1016/j.materresbull.2014.10.072
dc.identifier.scopus2-s2.0-84909644161
dc.type.versionpublishedVersion


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