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Abstract
Earlier efforts to investigate the material properties of ceramic (1−x) Pb(Mg⅓Nb⅔)O3−xPbTiO3 (PMN-PT) have primarily been concentrated upon exploring the utility of PMN-PT in applications where the high dielectric constant, low thermal expansion, and large, reproducible electrostrictive strains present in the compositional system could be exploited.1 For the present work, relaxor ferroelectric ceramics of optical quality with the compositions .90 Pb(Mg⅓Nb⅔)O3 −. 10 PbTiO3 [.90 PMN−. 10 PT] and .93 (Pb0.99La0.01)(Mg⅓Nb⅔)O3−.07 PbTiO3 [.93 PLMN−.07 PT] have been investigated for usage in electro-optical devices. The ceramic samples were hot-pressed to an optical transparency of greater than 50% at 633 nm and have large refractive indices (∼ 2.54).2