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Enhanced high-temperature electrical response of hydroxyapatite upon grain size refinement

Authorized Users Only
2015
Authors
Lukić, Miodrag J.
Jovalekić, Čedomir
Marković, Smilja
Uskoković, Dragan
Article (Published version)
Metadata
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Abstract
Correlation 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.
Source:
Materials Research Bulletin, 2015, 61, 534-538
Publisher:
  • Elsevier
Funding / projects:
  • Molecular designing of nanoparticles with controlled morphological and physicochemical characteristics and functional materials based on them (RS-45004)

DOI: 10.1016/j.materresbull.2014.10.072

ISSN: 0025-5408

WoS: 000347498700084

Scopus: 2-s2.0-84909644161
[ Google Scholar ]
8
4
Handle
https://hdl.handle.net/21.15107/rcub_dais_3548
URI
https://dais.sanu.ac.rs/123456789/3548
Collections
  • ИТН САНУ - Општа колекција / ITS SASA - General collection
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - JOUR
AU  - Lukić, Miodrag J.
AU  - Jovalekić, Čedomir
AU  - Marković, Smilja
AU  - Uskoković, Dragan
PY  - 2015
UR  - https://dais.sanu.ac.rs/123456789/3548
AB  - Correlation 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.
PB  - Elsevier
T2  - Materials Research Bulletin
T1  - Enhanced high-temperature electrical response of hydroxyapatite upon grain size refinement
SP  - 534
EP  - 538
VL  - 61
DO  - 10.1016/j.materresbull.2014.10.072
UR  - https://hdl.handle.net/21.15107/rcub_dais_3548
ER  - 
@article{
author = "Lukić, Miodrag J. and Jovalekić, Čedomir and Marković, Smilja and Uskoković, Dragan",
year = "2015",
abstract = "Correlation 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.",
publisher = "Elsevier",
journal = "Materials Research Bulletin",
title = "Enhanced high-temperature electrical response of hydroxyapatite upon grain size refinement",
pages = "534-538",
volume = "61",
doi = "10.1016/j.materresbull.2014.10.072",
url = "https://hdl.handle.net/21.15107/rcub_dais_3548"
}
Lukić, M. J., Jovalekić, Č., Marković, S.,& Uskoković, D.. (2015). Enhanced high-temperature electrical response of hydroxyapatite upon grain size refinement. in Materials Research Bulletin
Elsevier., 61, 534-538.
https://doi.org/10.1016/j.materresbull.2014.10.072
https://hdl.handle.net/21.15107/rcub_dais_3548
Lukić MJ, Jovalekić Č, Marković S, Uskoković D. Enhanced high-temperature electrical response of hydroxyapatite upon grain size refinement. in Materials Research Bulletin. 2015;61:534-538.
doi:10.1016/j.materresbull.2014.10.072
https://hdl.handle.net/21.15107/rcub_dais_3548 .
Lukić, Miodrag J., Jovalekić, Čedomir, Marković, Smilja, Uskoković, Dragan, "Enhanced high-temperature electrical response of hydroxyapatite upon grain size refinement" in Materials Research Bulletin, 61 (2015):534-538,
https://doi.org/10.1016/j.materresbull.2014.10.072 .,
https://hdl.handle.net/21.15107/rcub_dais_3548 .

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