Dielectric, relaxor and ferroelectric characterization of La doped xPb(Mg1/3Nb2/3)O-3-(1-x)Pb(Zr0.55Ti0.45)O-3 ceramics

Ramam, K; Luis, SH

Abstract

The relaxor ferroelectric ceramics of La doped xPb(Mg1/3Nb 2/3)O3-(1 - x)Pb(Zr0.55Ti0.45)O 3 are synthesized by columbite precursor method. Powder X-ray diffraction patterns of these compositions indicate pseudocubic phase formation. Grain growth is inhibited with La doping and is increased with PMN concentration in PMN-PZT ceramics. εRT and tan δ are increased to 1.5 mole% La doped PMN-PZT compositions while εTC and TC are decreased with La modification in PMN-PZT system. Pure and La modified 0.8PMN-0.2PZT compositions have shown the most promising relaxor behavior useful for multilayer capacitor (MLC) applications. The ferroelectric properties (Ec, Pr and Ps) are increased to 1.5 mole% La doped PMN-PZT composition.

Más información

Título según WOS: Dielectric, relaxor and ferroelectric characterization of La doped xPb(Mg1/3Nb2/3)O-3-(1-x)Pb(Zr0.55Ti0.45)O-3 ceramics
Título según SCOPUS: Dielectric, relaxor and ferroelectric characterization of la doped xPb(Mg1/3Nb2/3)O3-(1-x)Pb(Zr 0.55Ti0.45)O3 ceramics
Título de la Revista: EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS
Volumen: 35
Número: 1
Editorial: EDP SCIENCES S A
Fecha de publicación: 2006
Página de inicio: 49
Página final: 55
Idioma: English
URL: http://www.epjap.org/10.1051/epjap:2006066
DOI:

10.1051/epjap:2006066

Notas: ISI, SCOPUS