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Related Experiment Videos

Lanthanum indium oxide from X-ray powder diffraction.

Hyun Min Park1, Hwack Joo Lee, Sang Hyun Park

  • 1Materials Evaluation Center, Korea Research Institute of Standards and Science, Yusong-Gu Taejon 305-600, South Korea. hmpark@kriss.re.kr

Acta Crystallographica. Section C, Crystal Structure Communications
|December 13, 2003
PubMed
Summary

Lanthanum cobaltate (LaInO(3)) was synthesized for solid oxide fuel cells. Its distorted perovskite structure was confirmed using X-ray diffraction and Rietveld refinement, crucial for ion conductivity.

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Area of Science:

  • Solid-state chemistry
  • Materials science
  • Electrochemistry

Background:

  • Solid oxide fuel cells (SOFCs) require advanced ion conductors.
  • Lanthanum cobaltate (LaInO(3)) shows potential as an electrolyte material.

Purpose of the Study:

  • To synthesize LaInO(3) via solid-state reaction.
  • To characterize its crystal structure for SOFC applications.

Main Methods:

  • Solid-state reaction synthesis.
  • X-ray powder diffraction (XRD) for structural analysis.
  • Rietveld refinement for precise structural determination.

Main Results:

  • LaInO(3) was successfully synthesized.
  • The crystal structure is a distorted perovskite (Pmna space group).

Related Experiment Videos

  • Structural distortion arises from oxygen octahedra tilting (a(+)b(-)b(-)).

    • Conclusions:

    • The synthesized LaInO(3) possesses a well-defined, distorted perovskite structure.
    • Understanding this structure is key to optimizing its ion conductivity for SOFCs.