Eur. Phys. J. Appl. Phys.
Volume 48, Number 1, October 2009
|Number of page(s)||5|
|Section||Surfaces, Interfaces and Films|
|Published online||04 July 2009|
Phase diagrams of ferroelectric thin film with two surface layers
Laboratoire de Physique Statistique et Modélisation des Systèmes, Département de Physique, Errachidia, Morocco
2 LMCN, Département de Physique, FSTG Marrakech, Morocco
3 Laboratoire de Physique de la Matière Condensée de l'Université de Picardie Jules Verne, 80039 Amiens, France
Corresponding author: email@example.com
Accepted: 28 April 2009
Published online: 4 July 2009
Phase diagram of a ferroelectric thin film with two surface layers is studied in frame of the effective field theory (EFT) of transverse Ising model (TIM). The surface of the system is formed from two layers characterized by the exchange interaction anisotropy and the transverse field . The crossover from the ferroelectric phase (FP) to the paraelectric phase (PP) is discussed. The phase diagram of the system is studied in coordinates as function of the thickness parameter L. The special attention is given to the effect of the transverse field on the phase transitions.
PACS: 75.70.AK – Magnetic properties of monolayers and thin films / 77.80.-e – Ferroelectricity and antiferroelectricity / 77.80.Bh – Phase transitions and Curie point
© EDP Sciences, 2009
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