Ferroelectric and pyroelectric properties of Ce3+ modified tetragonal tungsten bronze structured lead barium niobate-55 ceramics

被引：4
|
作者：
Ramam, Koduri [1 ]
Chandramouli, K. [2 ]
机构：
[1] Univ Concepcion, Fac Ingn, Dept Ingn Mat DIMAT, Concepcion, Chile
[2] Andhra Univ, Dept Phys, Solid State Phys & Mat Res Labs, Visakhapatnam, Andhra Pradesh, India
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2012年 / 73卷 / 09期
关键词：
Ceramics; Electronic materials; Ferroelectricity; PBN; CRYSTALS;
D O I：
10.1016/j.jpcs.2012.04.017
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this work, Lead Barium Niobate-55 tetragonal tungsten bronze structured ceramics modified with Ce3+ with the stoichiometric formula Pb0.55-(3y/2)CeyBa0.45Nb2O6, where y=0-10 mol% Ce3+, were fabricated through the solid state reaction method and investigated for ferroelectric and pyroelectric properties. Pb0.55-(3y/2)CeyBa0.45Nb2O6 (PBN55) exhibited tetragonal (4mm) tungsten bronze structure. The ferroelectric properties (spontaneous polarization, P-s, remanent polarization. P-r and coercive field. E-c), as a function of Ce3+ concentration, have been reported. The influence of Ce3+ on pyroelectric properties of the PBN55 system has been evaluated. The pyroelectric properties were characterized and discussed as a function of Ce3+. The 6 mol% Ce3+ modified tetragonal PBN55 composition exhibited optimum pyroelectric properties in the series which could be suitable for possible pyroelectric applications. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1061 / 1065
页数：5
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