Measurement of Landau coefficients in ferroelectrics using nonlinear dielectric spectroscopy

Authors
Palto, SP Andreev, GN Petukhova, NN Yudin, SG Blinov, LM
Citation
Sp. Palto et al., Measurement of Landau coefficients in ferroelectrics using nonlinear dielectric spectroscopy, J EXP TH PH, 90(5), 2000, pp. 872-880
Citations number
17
Categorie Soggetti
Physics
Journal title
JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS
ISSN journal
10637761 → ACNP
Volume
90
Issue
5
Year of publication
2000
Pages
872 - 880
Database
ISI
SICI code
1063-7761(2000)90:5<872:MOLCIF>2.0.ZU;2-J
Abstract
A method of measuring the phenomenological Landau-Ginzburg coefficients in an expansion of the free energy of ferroelectrics near the phase transition is proposed. This method is based on simultaneously recording five Fourier components of the current response to a sinusoidal voltage as a function o f temperature. An analysis is made of a specific application of the method to Langmuir-Blodgett ultrathin ferroelectric films. (C) 2000 MAIK "Nauka/In terperiodica".