Article contents
Dielectric, relaxor and ferroelectric characterization of La doped xPb(Mg1/3Nb2/3)O3-(1 − x)Pb(Zr0.55Ti0.45)O3 ceramics
Published online by Cambridge University Press: 23 June 2006
Abstract
The relaxor ferroelectric ceramics of La doped xPb(Mg1/3Nb2/3)O3-(1 − x)Pb(Zr0.55Ti0.45)O3 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. $\varepsilon_{RT}$ and tan δ are increased to 1.5 mole% La doped PMN-PZT compositions while $\varepsilon_{T_C}$
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.
77.84.Dy Niobates, titanates, tantalates, PZT ceramics, etc.
- Type
- Research Article
- Information
- Copyright
- © EDP Sciences, 2006
References
- 4
- Cited by