The Formation of Regular Domain Structures in Ferroelectrics under Switching Polarization in High-nonequilibrium Conditions

Authors L.I. Stefanovich, O.Yu. Mazur

Institute of Physics for Mining Processes of the NAS of Ukraine, 2a, Simferopolska St., 49005 Dnipro, Ukraine

Issue Volume 9, Year 2017, Number 2
Dates Received 14 March 2017; revised manuscript received 26 April 2017; published online 28 April 2017
Citation L.I. Stefanovich, O.Yu. Mazur, J. Nano- Electron. Phys. 9 No 2, 02032 (2017)
DOI 10.21272/jnep.9(2).02032
PACS Number(s) 64.60.Cn, 64.70.Kb
Keywords Ferroelectric (7) , Order parameter (3) , Electric field, High-frequency field, Regular domain structure, Monodomain structure, Polydomain structure, Evolution curves.
Annotation The kinetics of the formation and growth of regular domain structure (RDS) in a high-frequency electric field has been considered in the framework of the phenomenological Ginzburg-Landau model using the example of lithium tantalite (LiTaO3) crystals that undergo a second-order ferroelectric phase transition of the order-disorder type. The numerical analysis was made due to the nonlinearity of resulting equation, and showed the opportunity of the formation of monodomain and polydomain ordering conditions and intermediate asymmetrical «virtual» polydomain structures. It was established by numerical calculations that there is some threshold frequency of the electric field, above which the system evolve to the polydomain type of ordering. It has been shown that the symmetrical thermodynamically stable RDS forms under high frequencies.

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