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

Sharma Poorva; Varshney Dinesh; Satapathy S.Gupta P. K.

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

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

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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.

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《Materials Chemistry and Physics》 |2014年第2期|629-636|共8页
作者
Sharma Poorva; Varshney Dinesh; Satapathy S.Gupta P. K.;
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作者单位

Devi Ahilya Univ, Sch Phys, Indore 452001, Madhya Pradesh, India;

Raja Ramanna Ctr Adv Technol, Laser Mat Dev & Devices Div, Indore 452013, Madhya Pradesh, India;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种英语
中图分类工程基础科学;工程材料学;
关键词
A. Ceramics; C. Powder diffraction; C. Raman spectroscopy and scattering; D. Dielectric properties; MAGNETIC-PROPERTIES; RAMAN-SCATTERING; CRYSTAL; BEHAVIOR;

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

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