Structural, optical, and dielectric studies of LaFe 1−x Mo x O 3 (x = 0.0, 0.5) perovskite materials

D. Triyono*, H. Laysandra, H. L. Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


The structural, optical, and dielectric properties of LaFe 1−x Mo x O 3 (x = 0.0, 0.5) synthesized by the sol–gel method were investigated by X-ray diffraction (XRD), Raman scattering, and impedance spectroscopy. XRD analysis revealed that the x = 0.5 compound is single-phase and orthorhombic, with space group Pbnm, similar to the parent x = 0.0 compound but with larger lattice parameters and/or a larger unit-cell volume. The Raman scattering spectra revealed local lattice distortions in the x = 0.5 compound and spin–phonon coupling related to the magnetic transition (Néel) temperature. The impedance data were well fitted with an R(R 1 -CPE 1 )//(R 2 -CPE 2 ) equivalent electrical circuit, demonstrating the contributions of both grains and grain boundaries. The temperature (300–500 K) and frequency (100 Hz–1 MHz) dependences of the dielectric properties showed that Mo substitution adversely affected the dielectric parameters.

Original languageEnglish
Pages (from-to)2512-2522
Number of pages11
JournalJournal of Materials Science: Materials in Electronics
Issue number3
Publication statusPublished - 2019 Feb 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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