Electromechanical and magnetic properties of BiFeO3-LaFeO3-CaTiO3 ceramics near the rhombohedral-orthorhombic phase boundary

被引：24
|
作者：
Karpinsky, D. V. [1 ,2 ]
Troyanchuk, I. O. [2 ]
Sikolenko, V. [3 ,4 ]
Efimov, V. [4 ]
Kholkin, A. L. [1 ]
机构：
[1] Univ Aveiro, Dept Ceram & Glass Engn, CICECO, P-3810193 Aveiro, Portugal
[2] NAS Belarus, Sci Pract Mat Res Ctr, Minsk 220072, BELARUS
[3] Karlsruhe Inst Technol, DE-76131 Karlsruhe, Germany
[4] Joint Inst Nucl Res, RU-141980 Dubna, Russia
来源：
JOURNAL OF APPLIED PHYSICS | 2013年 / 113卷 / 18期
关键词：
PIEZOELECTRIC PROPERTIES; STRUCTURAL TRANSFORMATION; THIN-FILMS; TRANSITION; BEHAVIOR; TITANATE;
D O I：
10.1063/1.4801960
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
BiFeO3-LaFeO3-CaTiO3 ceramics have been studied by X-ray diffraction, magnetization measurements, and piezoresponse force microscopy (PFM). The compositional ranges of the polar, antipolar, and non-polar phases have been estimated. PFM measurements testify gradual decrease of piezoelectric response in Bi(0.85-x)La(0.15)CaxFe(1-x)Ti(x)O(3) system with Ca/Ti content increase, except a narrow concentration region near polar-antipolar phase boundary where piezoelectric signal shows maximum value. It is found that increase of dopant concentration leads to apparent decrease of the off-center Bi-O displacement and, consequently, causes a reduction of piezoelectric response. It is concluded that notable remanent magnetization in polar and non-polar structural phases is a result of the Dzyaloshinsky-Moria interaction. (C) 2013 AIP Publishing LLC
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页数：6
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