Systematic study of phase-formation and lattice structure of La0.9Sr0.1Fe1-xMoxO3 synthesized through the sol-gel method

H. Laysandra, D. Triyono, H. L. Liu, R. A. Rafsanjani

Research output: Contribution to journalArticle

Abstract

In this paper, we investigated the phase formation and lattice structure of La0.9Sr0.1Fe1−xMoxO3 (x = 0.0, 0.1, 0.2, and 0.3) (LSFMO), which we have synthesized through the sol-gel method. The heat treatment has been performed to study the chemical and physical reaction during the processes. The formation and structural evolution of the LSFMO phase were systematically investigated through scanning electron microscopy (SEM), x-ray powder diffraction (XRD), differential thermal analysis (DTA), thermogravimetric analysis (TGA), and Raman scattering spectroscopy. The SEM images revealed that the grains basically consisted of several crystallites. The XRD showed organic phases (C6H12O4 and H2N2O2) upon heating at 175 °C and 400 °C, which then gave way to the LSFMO phase after calcination at 900 °C. The lattice structure is orthorhombic and the lattice parameters and crystal distortion increase upon the addition of Mo. The results of the DTA exhibited two exotherms at temperatures near 300 °C and 450 °C, which were interpreted as the temperatures at which the organic phases decomposed. The TGA results confirmed weight loss due to the decomposition of the organic phases during the formation of the LSFMO phase. The Raman-active phonon modes provide evidence for the lattice distortion with increasing Mo doping.

Original languageEnglish
Pages (from-to)9751-9757
Number of pages7
JournalCeramics International
Volume46
Issue number7
DOIs
Publication statusPublished - 2020 May

Keywords

  • LaSrFeMoO
  • Lattice structure
  • Phase formation
  • Raman scattering
  • Sol-gel

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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