Barium modified lead lanthanum strontium zirconium niobium titanate for dielectric and piezoelectric properties

Ramam, K; Lopez M.

Abstract

The isovalent Ba2+ modified lead lanthanum strontium zirconium niobium titanate (PLSZNT) solid solutions were prepared by solid-state reaction method with the compositional formula [Pb1-x-w-yLaxSrwBay][(ZrzTi1-z)(1-(x/4)-(5/4)k)Nbk]O3 where Ba content, y, was varied from 0, 0.5, 1 and 1.5 mol%. X-ray diffraction (XRD) studies revealed that all the samples have ferroelectric tetragonal structure (FETET). The presence of multiple ions at Pb-site enhanced grain growth and further addition of Ba concentration resulted in restrained grain growth. Dielectric studies suggested that the εRT increased up to 1 mol% Ba while Tc has shown a continuous decreasing trend throughout the series. The piezoelectric parameters as a function of grain growth were characterized. The optimum piezoelectric charge coefficient (d33 = 538 pC/N) and piezoelectric planar coupling coefficient (kp = 0.521) was found to be in 1 mol% Ba modified PLSZNT ceramic, respectively, and this composition may be suitable for possible sensor and actuator applications. © 2007 Elsevier Ltd. All rights reserved.

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Título según WOS: Barium modified lead lanthanum strontium zirconium niobium titanate for dielectric and piezoelectric properties
Título según SCOPUS: Barium modified lead lanthanum strontium zirconium niobium titanate for dielectric and piezoelectric properties
Título de la Revista: JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volumen: 27
Número: 10
Editorial: ELSEVIER SCI LTD
Fecha de publicación: 2007
Página de inicio: 3141
Página final: 3147
Idioma: English
URL: http://linkinghub.elsevier.com/retrieve/pii/S0955221907000040
DOI:

10.1016/j.jeurceramsoc.2007.01.001

Notas: ISI, SCOPUS