Dielectric, ferroelectric and piezoelectric studies of neodymium-modified PLZNT ceramics for sensor and actuator applications

被引：36

作者：

Ramam, Koduri ^{[1
]}

Lopez, Marta ^{[1
]}

机构：

[1] Univ Concepcion, Fac Ingn, Dept Ingn Mat DIMAT, Concepcion, Chile

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 466卷 / 1-2期

关键词：

PLZT; Ferroelectrics; Scanning and transmission electron microscopy; Dielectric response;

D O I：

10.1016/j.jallcom.2007.11.055

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This paper highlights donor Nd-modified PLZNT Pb0.985La0.015Ndy][Zr0.524Ti0.476](0.99-(y/4))Nb0.005O3 ceramic compositions where y = 0, 0.25, 0.50, 0.75 and 1.0 mol% synthesized through solid-state reaction method were characterized for microstructure, dielectric, ferroelectric and piezoelectric properties. Scanning electron microscopy studies exhibited grain growth inhibition and the room temperature dielectric constant enhanced with decreasing Curie temperature. It was observed that increasing Nd content with donor cations in A-site and B-site had influenced the ferroelectric properties, viz. remanent and spontaneous polarization. The optimum dielectric and piezoelectric properties (d(33) and k(p)) were observed in 1 mol% Nd-modified PLZNT composition which could be suitable for possible sensor and actuator applications. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：398 / 403

页数：6