Dielectric investigation of sodium potassium niobate ceramic doped 7% of antimony
| Autor: | Juras Banys, Sarunas Bagdzevicius, Andris Sternberg, Karlis Bormanis, Robertas Grigalaitis |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Potassium niobate Doping Analytical chemistry Mineralogy chemistry.chemical_element General Chemistry Activation energy Dielectric Condensed Matter Physics Arrhenius plot Dielectric spectroscopy chemistry.chemical_compound Antimony chemistry visual_art visual_art.visual_art_medium General Materials Science Ceramic |
| Zdroj: | Solid State Ionics. 225:667-671 |
| ISSN: | 0167-2738 |
| DOI: | 10.1016/j.ssi.2012.03.024 |
| Popis: | Electric properties of sodium potassium niobate ceramic doped antimony (Na0.5K0.5)(Nb0.93Sb0.07)O3 with sintering aid MnO2 (0.5 mol% MnO2) (KNNSbx + 0.5Mn) were investigated in a broad frequency (from 1 Hz to 54 GHz) and temperature (from 110 K to 800 K) ranges. The mean relaxation times calculated from the dielectric permittivity measurements fulfill Arrhenius relationship with dipole activation energy EA = 3409 K (EA/kB = 0.29 eV). The DC conductivity has been extracted from experimental results and the activation energy was calculated EA = 11733.78 K (EA/kB = 1.011 eV). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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