Preparation and Microstructural, Structural, Optical and Electro-Optical Properties of La Doped Pmn-Pt Transparent Ceramics

• 作者: D. Garcia F. A. Londo?o F. P. Milton J. Eiras
• 来源期刊: 光学与光子学期刊(英文)
• 学科: 化学
• 关键词: FERROELECTRIC OPTICS TRANSMITTANCE ELECTRO-OPTICAL
• 年，卷（期）: 2012,（3）
• 页码范围: 157-162
• 页数: 6页
• 分类号: O6

摘要

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)Lay(Mg1/3Nb2/3)O3]-xPbTiO3 and (1-z)[(1-x)Pb(Mg1/3Nb2/3)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.