Ferroelectric relaxor behaviour in Pb(Fe0.5Ta0.5)O3

被引：0
|
作者：
Chandrahas Bharti
S. N. Choudhary
T. P. Sinha
机构：
[1] T M Bhagalpur University,University Department of Physics
[2] Bose Institute,Department of Physics
来源：
Indian Journal of Physics | 2009年 / 83卷
关键词：
Ceramics; dielectric constant; Curie temperature; relaxor; 77.22.Gm; 61.10.Lx; 77.80.Bh;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The relaxor ferroelectric lead iron tantalate, Pb(Fe0.5Ta0.5)O3 (PFT) is synthesized by Coulombite precursor method. The X-ray diffraction pattern of the sample at room temperature shows a cubic phase. The field dependence of dielectric response is measured in a frequency range 0.1 kHz — 1 MHz and in a temperature range from 173–373 K. The temperature dependence of permittivity (ɛ′) shows broad maxima at various frequencies. The frequency dependence of the permittivity maximum temperature (Tm) has been modelled using Vogel-Fulcher relation.
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页码：409 / 414
页数：5
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