Author(s)

F. A. Londoño, J. Eiras, F. P. Milton, D. Garcia

Ferroelectric Ceramics Group, Physics Department, Federal University of S?o Carlos, S?o Carlos, Brazil.

Transparent relaxor ferroelectric ceramics of the system lanthanum modified lead magnesium niobate have been investigated for a variety of electro-optic properties could make these materials alternatives to (Pb,La)(Zr,Ti)O₃. However, a study that relates the properties in function stoichiometric formula, it has not been analyzed heretofore. Therefore, in this work the effect of A-site substitution of La⁺³ in the characterization microstructural, structural, optical and electro-optical on (1-x)[Pb_(1-3/2y)La_y(Mg_1/3Nb_2/3)O₃]-xPbTiO₃ and (1-z)[(1-x)Pb(Mg_1/3Nb_2/3)O₃+xPbTiO₃]+zLa₂O₃ has been performed. It was observed that the properties according to the stoichiometric formula and the PT had a maximum whose behavior was related to the addition of lanthanum in each stoichiometries.

Ferroelectric; Optics; Transmittance; Electro-Optical

Londoño, F. , Eiras, J. , Milton, F. and Garcia, D. (2012) Preparation and Microstructural, Structural, Optical and Electro-Optical Properties of La Doped Pmn-Pt Transparent Ceramics. Optics and Photonics Journal, 2, 157-162. doi: 10.4236/opj.2012.23023.