Diffuse Phase Transition, Relaxor Behavior and Anomalies in (Pb, La)TiO3 Ceramics

被引：5
|
作者：
Limame, K. [1 ]
Sayouri, S. [1 ]
El Ghazouali, A. [2 ]
Hajji, L. [3 ]
Lamcharfi, T. [1 ,4 ]
Jaber, B. [5 ]
Housni, A. [1 ]
机构：
[1] Fac Sci Dhar Mehraz, Lab Phys Theor & Appl, Fes, Morocco
[2] Fac Sci & Tech Saiss, Dept Chim, Fes, Morocco
[3] FST Gueliz, Lab Mat Condensee & Nanostruct, Marrakech, Morocco
[4] Fac Sci & Tech Saiss, Dept Phys, Fes, Morocco
[5] CNRST, Rabat, Morocco
来源：
FERROELECTRICS | 2008年 / 371卷
关键词：
Sol-gel process; PLT; dielectric anomalies; permittivity; raman spectroscopy;
D O I：
10.1080/00150190802394244
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
(Pb1 - xLax)Ti1 - x/4O3 (PLTx) ceramics of perovskite type were prepared by sol-gel process, and their structural and dielectric properties investigated. Calcinations of the powders were done in the temperature range of 400-700C. The obtained compounds crystallize, under heat treatment, at relatively low temperatures and no secondary phases have been observed on the corresponding XRD spectra. Dielectric measurements revealed the presence of anomalies in both ferroelectric and paraelecric domains. Results also show that these PLTx ceramics are ferroelectric relaxors.
引用
收藏
页码：68 / 81
页数：14
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