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Polarization behavior in systems with competing ferroelectric and antiferroelectric interactions
Author(s) -
Milhazes J.,
LancerosMéndez S.,
Cadilhe A.
Publication year - 2005
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200402138
Subject(s) - antiferroelectricity , ferroelectricity , frustration , hysteresis , dielectric , condensed matter physics , polarization (electrochemistry) , loop (graph theory) , coupling (piping) , materials science , preisach model of hysteresis , statistical physics , physics , chemistry , magnetic hysteresis , mathematics , magnetization , quantum mechanics , optoelectronics , combinatorics , magnetic field , metallurgy
Abstract The dielectric hysteresis loop constitutes the main feature indicative of the properties of a ferroelectric material, but in complex systems with ferro‐ and antiferroelectric interactions, the hysteresis loops are often multiple. In the present work, we introduce a model based on the coexistence of ferro‐ and antiferroelectric regions, which can describe the aforementioned multiple loops. Based on our model, simulated multiple hysteresis loops are in good agreement with experimental results. Hysteresis loops obtained from our model are sensitive to the relative values of the ferro‐ and antiferroelectric coupling constants, domain size, and temperature. The model describes well systems without the presence of frustration as it is the case of BA x BP 1– x . In the case of systems exhibiting frustration like e.g. Rb x (NH 4 ) 1– x H 2 PO 4 , we present a straightforward extension of our model. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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