Features of Dielectric Nonlinearity in Paraelectrics
Analytical expressions describing the polarizability of insulators in the framework of main mechanisms of polarization have been derived and analyzed. The obtained formula can adequately describe the effects that emerge, when the electric field penetrates into a dielectric crystal. A dielectric nonlinearity occurring at the ferroelectric-paraelectric phase transition is analyzed. The results of analytical calculations confirmed the results of previous researches concerning the application of thin paraelectric films in microwave technology and as gate insulators.
A.G. Belous and O.I. V'yunov, Ukr. Khim. Zh. 78, No. 7, 3 (2012).
Yu.M. Poplavko, L.P. Pereverzev, and I.P. Raevskii, Physics of Active Insulators (Southern Federal University Publ. House, Rostov-on-Don, 2009) (in Russian).
M.C. Cross, Landau Theory of Second Order Phase Transitions; http://www.pmaweb.caltech.edu/mcc/Ph127/b/Lecture6.pdf.
M.M. Vijatovi’c, J.D. Bobi’c, and B.D. Stojanovi’c, Sci. Sinter. 40, 235 (2008).
A.B. Ustinov, P.I. Kolkov, A.A. Nikitin, B.A. Kalinikos, Yu.K. Fetisov, and G. Srinivasan, Zh. Tekhn. Fiz. 81, No. 6, 75 (2011).
V.K. Varadan, K.J. Vinoy, and K.A. Jose, RF MEMS and Their Applications (Wiley, London, 2002).
J. Nath, W.M. Fathelbab, P.G. Lam, D. Ghosh, S. Aygiin, K.G. Gard, J.P. Maria, A.I. Kingon, and M.B. Steer, in Microwave Symposium Digest (IEEE MTT-S International, 2006), p. 552.
V. Bovtun, V. Pashkov, M. Kempa, S. Kamba, A. Eremenko, V. Molchanov, Y. Poplavko, Y. Yakymenko, J.H. Lee, and D.G. Schlom. J. Appl. Phys. 109, 024106 (2011).
O.G. Vendik, I.M. Buzish, N.N. Antonov et al., in Ferroelectrics in Microwave Technology, edited by O.G. Vendik (Sov. Radio, Moscow, 1979) (in Russian), p. 101.