Dielectric Hysteresis Loops of First-Order Antiferroelectrics

Autor:	Junaidah Osman, D. R. Tilley, Lye-Hock Ong
Rok vydání:	2007
Předmět:	Coupling Condensed Matter::Materials Science Phase transition Materials science Condensed matter physics Field (physics) Phase (matter) Antiferroelectricity Dielectric Dielectric hysteresis Condensed Matter Physics Ferroelectricity Electronic Optical and Magnetic Materials
Zdroj:	Ferroelectrics. 355:130-135
ISSN:	1563-5112 0015-0193
DOI:	10.1080/00150190701517531
Popis:	Landau-Devonshire free-energy expression is applied to study the dielectric hysteresis loops of a two-sublattice antiferroelectric undergoing a first order phase transition from the paraelectric phase. This expression for the antiferroelectric sublattices corresponds to the free energy expression of ferroelectric bilayers of equal thicknesses. The pattern of the dielectric hysteresis loops is characteristic of the value of temperature t relative to the three critical temperatures and the limit of field induced temperature t 2 . The interlayer coupling term J, assumed to be antiferroelectric, is also an important factor that affects the patterns of dielectric hysteresis loops. Despite their complicated appearance the dielectric hysteresis loops can be classified in terms of a small number of types of minimum.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f85d9b7a23ac27214c89bd7aa1377930 https://doi.org/10.1080/00150190701517531 Zobrazit plný text záznamu