Effect of strontium doping on dielectric, ferroelectric and piezoelectric properties of PLZTN ceramics

Ramam, K; Lopez M.

Abstract

Ceramic compositions of [Pb1-x-yLaxSry][(ZrzTi1-z)(1-(x/4)-(5/4)k)Nbk]O3 (PLSZTN), where y = 0, 0.5, 1.0 and 1.5 mol% have been fabricated by solid-state reaction method. Introduction of strontium in PLZTN lattice showed ferroelectric tetragonal nature and further increment of Sr2+ favored intensified tetragonality. Microstructure studies revealed that grain growth enhanced with the addition of Sr2+ and inter-diffusion between multiple ions promoted apparent density in the ceramics. The substitution of isovalent Sr2+ at Pb-site and donor pentavalent Nb5+ at Zr/Ti-site enhanced the dielectric constant (εRT = 2384) while decreasing the Curie temperature (Tc). The substitution of 1.5 mol% Sr evidently increased ferroelectric properties (remanent (Pr = 32.66 μC/cm2) and spontaneous (Ps = 38.54 μC/cm2) polarization), respectively. Sr-modified PLZTN showed a significant influence on the piezoelectric properties which enhanced till 1.5 mol% Sr in PLZTN ceramic system, which may be applicable for possible sensor and actuator applications. © 2007 Elsevier B.V. All rights reserved.

Más información

Título según WOS: Effect of strontium doping on dielectric, ferroelectric and piezoelectric properties of PLZTN ceramics
Título según SCOPUS: Effect of strontium doping on dielectric, ferroelectric and piezoelectric properties of PLZTN ceramics
Título de la Revista: MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
Volumen: 145
Número: 01-mar
Editorial: Elsevier
Fecha de publicación: 2007
Página de inicio: 41
Página final: 47
Idioma: English
URL: http://linkinghub.elsevier.com/retrieve/pii/S0921510707005740
DOI:

10.1016/j.mseb.2007.09.085

Notas: ISI, SCOPUS