Dielectric relaxation in NaNbO₃ single crystal
Dielectric permittivity studies of reduced samples of NaNbO₃ single crystal in the range of temperatures 30–500 °C and frequency 20 Hz-1 MHz are reported. In this temperature range a relaxation process is observed in the frequency range of about 100 kHz. This is an additional process to the earlier...
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| Date: | 1999 |
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| Main Author: | |
| Format: | Article |
| Language: | English |
| Published: |
Інститут фізики конденсованих систем НАН України
1999
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| Series: | Condensed Matter Physics |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Dielectric relaxation in NaNbO₃ single crystal / K. Konieczny // Condensed Matter Physics. — 1999. — Т. 2, № 4(20). — С. 655-660. — Бібліогр.: 8 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | Dielectric permittivity studies of reduced samples of NaNbO₃ single crystal in the range of temperatures 30–500 °C and frequency 20 Hz-1 MHz are reported. In this temperature range a relaxation process is observed in the frequency range of about 100 kHz. This is an additional process to the earlier reported one [7]. The obtained data were fitted to Cole-Cole formula. The dispersion step ∆ǫ (the maximum value of ∆ǫ =1000) is temperature dependent. The mean relaxation time τ does not obey the Arrhenius law above TC. The occurrence of this relaxation process may be connected with oxygen vacancies. |
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