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Electrical and Optical Properties of Hot-Pressed Ba(La<sub>1/2</sub>Nb<sub>1/2</sub>)O<sub>3</sub>–PbZrO<sub>3</sub>–PbTiO<sub>3</sub> Ceramics
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1985
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Materials EngineeringMaterials ScienceOptical MaterialsSolid SolutionEngineeringCeramic MaterialFunctional CeramicCondensed Matter PhysicsApplied PhysicsCeramics MaterialsFerroelectric MaterialsHot-pressed BaHot-pressed CeramicsOptical CeramicElectrical PropertiesEngineering CeramicPhase Diagram
Hot-pressed ceramics of the solid solution in the ternary systems x Ba(La 1/2 Nb 1/2 )O 3 –(1- x )[Pb(Zr y Ti 1- y )O 3 ] show excellent optical and electrooptical characteristics, comparable to PLZT. Linear and quadratic electrooptical coefficients, r c and R , are determined for more than ten specimens of various compositions near the morphotropic phase boundary between the tetragonal and the rhombohedral phases and maximum values of r c =10.73×10 -10 m/V and R =12.0×10 -16 m 2 /V 2 are observed. Dielectric and electromechanical measurements along with X-ray analysis are also carried out to determine the phase diagram.