https://doi.org/10.1051/epjap/2009119
Phase diagrams of ferroelectric thin film with two surface layers
1
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: arhchouih@hotmail.com
Received:
19
February
2009
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
