Electrical properties of mechanically activated zinc oxide
Microstructural properties of a commercial zinc oxide powder were modified by mechanical activation in a high-energy vibro-mill. The obtained powders were dry pressed and sintered at 1100°C for 2 h. The electrical properties of grain boundaries of obtained ZnO ceramics were studied using an ac imped...
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| Format: | Article |
| Language: | English |
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International Institute for the Science of Sintering, Beograd
2006-01-01
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| Series: | Science of Sintering |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0350-820X/2006/0350-820X0602131V.pdf |
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| author | Vojisavljević K. Žunić M. Branković G. Srećković T. |
| author_facet | Vojisavljević K. Žunić M. Branković G. Srećković T. |
| author_sort | Vojisavljević K. |
| collection | DOAJ |
| description | Microstructural properties of a commercial zinc oxide powder were modified by mechanical activation in a high-energy vibro-mill. The obtained powders were dry pressed and sintered at 1100°C for 2 h. The electrical properties of grain boundaries of obtained ZnO ceramics were studied using an ac impedance analyzer. For that purpose, the ac electrical response was measured in the temperature range from 23 to 240°C in order to determine the resistance and capacitance of grain boundaries. The activation energies of conduction were obtained using an Arrhenius equation. Donor densities were calculated from Mott-Schottky measurements. The influence of microstructure, types and concentrations of defects on electrical properties was discussed. |
| first_indexed | 2024-12-21T20:12:00Z |
| format | Article |
| id | doaj.art-1833df77a7cb47a99278d776f30e8ff9 |
| institution | Directory Open Access Journal |
| issn | 0350-820X |
| language | English |
| last_indexed | 2024-12-21T20:12:00Z |
| publishDate | 2006-01-01 |
| publisher | International Institute for the Science of Sintering, Beograd |
| record_format | Article |
| series | Science of Sintering |
| spelling | doaj.art-1833df77a7cb47a99278d776f30e8ff92022-12-21T18:51:44ZengInternational Institute for the Science of Sintering, BeogradScience of Sintering0350-820X2006-01-0138213113810.2298/SOS0602131VElectrical properties of mechanically activated zinc oxideVojisavljević K.Žunić M.Branković G.Srećković T.Microstructural properties of a commercial zinc oxide powder were modified by mechanical activation in a high-energy vibro-mill. The obtained powders were dry pressed and sintered at 1100°C for 2 h. The electrical properties of grain boundaries of obtained ZnO ceramics were studied using an ac impedance analyzer. For that purpose, the ac electrical response was measured in the temperature range from 23 to 240°C in order to determine the resistance and capacitance of grain boundaries. The activation energies of conduction were obtained using an Arrhenius equation. Donor densities were calculated from Mott-Schottky measurements. The influence of microstructure, types and concentrations of defects on electrical properties was discussed.http://www.doiserbia.nb.rs/img/doi/0350-820X/2006/0350-820X0602131V.pdfzinc oxideceramicsmechanical activationelectrical properties |
| spellingShingle | Vojisavljević K. Žunić M. Branković G. Srećković T. Electrical properties of mechanically activated zinc oxide Science of Sintering zinc oxide ceramics mechanical activation electrical properties |
| title | Electrical properties of mechanically activated zinc oxide |
| title_full | Electrical properties of mechanically activated zinc oxide |
| title_fullStr | Electrical properties of mechanically activated zinc oxide |
| title_full_unstemmed | Electrical properties of mechanically activated zinc oxide |
| title_short | Electrical properties of mechanically activated zinc oxide |
| title_sort | electrical properties of mechanically activated zinc oxide |
| topic | zinc oxide ceramics mechanical activation electrical properties |
| url | http://www.doiserbia.nb.rs/img/doi/0350-820X/2006/0350-820X0602131V.pdf |
| work_keys_str_mv | AT vojisavljevick electricalpropertiesofmechanicallyactivatedzincoxide AT zunicm electricalpropertiesofmechanicallyactivatedzincoxide AT brankovicg electricalpropertiesofmechanicallyactivatedzincoxide AT sreckovict electricalpropertiesofmechanicallyactivatedzincoxide |