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

被引：46

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

页码：629 / 636

页数：8

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