Switching processes in alanine doped triglycine sulfate crystals
N.N. Bolshakova1, A.I. Ivanova1, N.Yu. Druginina2, E.M. Semenova1, S.S. Schipilov1
1 Tver State University
2 Military Academy of Air and Space Defense named after Marshal of the Soviet Union G. K. Zhukov
DOI: 10.26456/pcascnn/2024.16.072
Original article
Abstract: The paper presents the results of an experimental study of the dielectric and switching characteristics of some initial and annealed alanine-doped crystals of the triglycine sulfate group at room temperature. The results of measurements and calculations of the effective permittivity, switchable polarization, coercive and bias fields, unipolarity coefficient and dielectric loss tangent are presented. It was found that for most samples before and after annealing, the dielectric hysteresis loops are unipolar and shifted along the abscissa axis. This indicates a preferential orientation of domains and the presence of bias fields. As a result of annealing, the values of the coercive field and the unipolarity coefficient of the crystals decrease, and the switchable polarization increases. It is shown that the field dependences of the effective permittivity of the crystals before annealing have extrema lying in the field range of (5-7,5) ∙ 104 V∙m-1 and in the range (5-12) ∙ 104 V∙m-1 after their annealing.
Keywords: triglycine sulfate crystals, hysteresis, switching processes, permittivity
- Nataly N. Bolshakova – Ph. D., Docent, Condensed Matter Physics Department, Tver State University
- Alexandra I. Ivanova – Ph. D., Docent, Applied Physics Department, Tver State University
- Nataly Yu. Druginina – Ph. D., Docent, Military Academy of Air and Space Defense named after Marshal of the Soviet Union G. K. Zhukov
- Elena M. Semenova – Ph. D., Docent, Condensed Matter Physics Department, Tver State University
- Sergey S. Schipilov – Master's graduate, Condensed Matter Physics Department, Faculty of Physics and Technology, Tver State University
Reference:
Bolshakova, N.N. Switching processes in alanine doped triglycine sulfate crystals / N.N. Bolshakova, A.I. Ivanova, N.Yu. Druginina, E.M. Semenova, S.S. Schipilov // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2024. — I. 16. — P. 72-84. DOI: 10.26456/pcascnn/2024.16.072. (In Russian).
Full article (in Russian): download PDF file
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