Abstract―
Dependencies of the complex permittivity of chromium-doped ferroelectric triglycine sulfate crystals (TGS + Cr) have been measured using dielectric spectroscopy method in a frequency range of 1–107 Hz and a temperature range of 23–60°C upon heating and cooling. The dielectric spectra are analyzed by considering the temperature‒frequency dependences of the real (ε') and imaginary (ε") parts of permittivity in the immediate vicinity of the phase transition using the dynamic conductance model and taking into account resonance processes. Good agreement between calculated and experimental data is obtained for the dielectric response of TGS + Cr crystal near the Curie temperature.
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ACKNOWLEDGMENTS
The study was performed using equipment of the Collective-Use Centre of the Federal Scientific Research Centre “Crystallography and Photonics” of the Russian Academy of Sciences.
Funding
The study was supported by the Ministry of Science and Higher Education of the Russian Federation within a State assignment for the Federal Scientific Research Centre “Crystallography and Photonics” of the Russian Academy of Sciences.
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Translated by A. Grudtsov
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Ivanova, E.S., Ovchinnikova, G.I., Grebenev, V.V. et al. Dielectric Spectra of TGS + Сr Crystals in the Vicinity of Phase Transition. Crystallogr. Rep. 65, 757–761 (2020). https://doi.org/10.1134/S1063774520050089
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DOI: https://doi.org/10.1134/S1063774520050089