Effect of Pr substitution on structural and electrical properties of BiFeO3 ceramics

被引：42
|
作者：
Sharma, Poorva [1 ]
Varshney, Dinesh [1 ]
Satapathy, S. [2 ]
Gupta, P. K. [2 ]
机构：
[1] Devi Ahilya Univ, Sch Phys, Indore 452001, Madhya Pradesh, India
[2] Raja Ramanna Ctr Adv Technol, Laser Mat Dev & Devices Div, Indore 452013, Madhya Pradesh, India
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2014年 / 143卷 / 02期
关键词：
A; Ceramics; C. Powder diffraction; C. Raman spectroscopy and scattering; D. Dielectric properties; MAGNETIC-PROPERTIES; RAMAN-SCATTERING; CRYSTAL; BEHAVIOR;
D O I：
10.1016/j.matchemphys.2013.09.045
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Investigation on structural, vibrational, dielectric and ferroelectric properties of Bi1-xPrxFeO3 (x = 0.0, 0.15, 0.25) ceramic samples has been carried out. Room temperature Rietveld-refined X-ray diffraction pattern shows the crystal structure of Bi1-xPr5FeO3 is rhombohedral for x = 0 and triclinic for x = 0.15, 0.25. The changes in Raman normal modes with increasing doping concentration infer the structural transformation is due to Pr substitution at A-site in BiFeO3. Raman spectra also reveal suppression of ferroelectric behavior due to Pr doping. The dielectric parameters, namely, dielectric permittivity (s') and loss tangent (tan (6)) were evaluated as a function of frequency at room temperature. The ferroelectric polarization reduces in Pr doped bulk BFO samples due to structural change. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：629 / 636
页数：8
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