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Glass and Ceramics

, Volume 66, Issue 1–2, pp 59–62 | Cite as

Crystal structure and ir spectra of lanthanum cobaltites-gallates

  • N. N. Lubinskii
  • L. A. Bashkirov
  • G. S. Petrov
  • S. V. Shevchenko
  • I. N. Kandidatova
  • M. V. Bushinskii
Science for Ceramics Production

Cobaltites-gallates in the binary system LaCoO3 – LaGaO3 are synthesized. X-ray phase analysis showed that a continuous series of solid solutions with the composition LaCo1 − x Ga x O3 is formed in the system investigated. It is determined that solid solutions with 0 < x ≤ 0.7 and 0.7 < x ≤ 1.0 possess rhombohedrally and orthorhombically distorted perovskite structure, respectively. Analysis of the dependence of the absorptionband frequency of the IR spectra of the solid solutions LaCo1 − x Ga x O3 which is due to stretching vibrations on the degree of substitution of Ga3+ ions for Co3+ ions in LaCoO3 showed that the morphotropic boundary separating the region of the solid solutions LaCo1 − x Ga x O3 with rhombohedrally and orthorhombically distorted perovskite structure passes near the composition of the solid solution with x slightly less than 0.7.

Keywords

Solid Solution Perovskite Lanthanum Interplanar Distance LaCo 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, Inc. 2009

Authors and Affiliations

  • N. N. Lubinskii
    • 1
    • 2
  • L. A. Bashkirov
    • 1
    • 2
  • G. S. Petrov
    • 1
    • 2
  • S. V. Shevchenko
    • 1
    • 2
  • I. N. Kandidatova
    • 1
    • 2
  • M. V. Bushinskii
    • 1
    • 2
  1. 1.Belarus State Technological UniversityMinskBelarus
  2. 2.Science and Applications Center of the National Academy of Sciences of Belarus on Materials ScienceMinskBelarus

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