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Synthesis, Phase Diagram, and Conductivity Study in a La0.5+x+yLi0.5−3xTi1−3yMn3yO3System

✍ Scribed by I. Moreno; M. Morales; M.L. Marı́nez Sarrión

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
654 KB
Volume
140
Category
Article
ISSN
0022-4596

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✦ Synopsis

The stoichiometry, polymorphysm, and electrical behaviour of solid solutions of La 0.5؉y؉x Li 0.5؊3x Ti 1؊3y Mn 3y O 3 with perovskitetype structure have been studied. Data are given in the form of a solid solution triangle, phase diagrams, XRD patterns for the three polymorphs, A, , and C, composition-dependence of their lattice parameters, and ionic and electronic conductivity plots. Microstruture and composition were studied by SEM/EDS and electron probe microanalysis. These compounds are mixed conductors. Ionic conductivity decreases when the amount of lithium diminishes and electronic conductivity increases with manganese content.

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