Hysteresis loops and dielectric properties of compositionally graded (Ba,Sr)TiO3 thin films described by the transverse Ising model

被引：10
|
作者：
Benhouria, Y. [1 ]
Essaoudi, I. [1 ]
Ainane, A. [1 ,2 ,3 ,4 ]
Ahuja, R. [3 ]
Dujardin, F. [4 ]
机构：
[1] Univ Moulay Ismail, Unite Associee CNRST URAC 08, Dept Phys, LP2MS,Fac Sci, BP 11201, Meknes, Morocco
[2] Max Planck Inst Phys Komplexer Syst, Nothnitzer Str 38, D-01187 Dresden, Germany
[3] Uppsala Univ, Dept Phys & Astron, Condensed Matter Theory Grp, S-75120 Uppsala, Sweden
[4] ICPM, LPMD, 1 Bd Arago, F-57070 Metz, France
来源：
CHINESE JOURNAL OF PHYSICS | 2016年 / 54卷 / 04期
关键词：
Concentration-graded ferroelectrics; Ferroelectric phase transition; Hysteresis loops; BARIUM-STRONTIUM-TITANATE; PULSED-LASER DEPOSITION; TUNABLE MICROWAVE APPLICATIONS; FERROELECTRIC PROPERTIES; BILAYER SUPERLATTICE; BOTTOM ELECTRODES; HIGH TUNABILITY; BAXSR1-XTIO3; SURFACE; MICROSTRUCTURES;
D O I：
10.1016/j.cjph.2016.06.012
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Using the effective field theory with a probability distribution technique that accounts for the self-spin correlations, we apply the transverse spin-1/2 Ising model to study the intrinsic hysteresis of compositionally graded Ba1-xSrxTiO3 (BST) thin films with x decreasing from 0.20 to 0.10 in successive slabs. The random bond model of related parameters is applied to mimic doping. The effects of the thickness, the concentration of Sr, the number of slabs and the temperature on the polarization and the hysteresis are discussed. (C) 2016 The Physical Society of the Republic of China (Taiwan). Published by Elsevier B.V. All rights reserved.
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页码：533 / 544
页数：12
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