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Crystal Chemistry and Conductivity Studies in the System La0.5+x+yLi0.5−3xTi1−3yCr3yO3

✍ Scribed by M.L. Martı́nez-Sarrión; L. Mestres; M. Morales; M. Herraiz

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
367 KB
Volume
155
Category
Article
ISSN
0022-4596

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✦ Synopsis

The stoichiometry polymorphism and electrical behavior of solid solutions La 0.5؉x؉y Li 0.5؊3x Ti 1؊3y Cr 3y O 3 with perovskite-type structure were studied. Data are given in the form of a solid solutions triangle, phase diagrams, XRD patterns for the three polymorphs, A, , and C, composition dependence of their lattice parameters, and ionic and electronic conductivity plots. Microstructure and composition were studied by SEM/EDS and electron probe microanalysis. These compounds are mixed conductors. Ionic conductivity decreased when the amount of lithium diminished and electronic conductivity increased with chromium content.

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