Dual-phase formation in LaFeO3 upon doping of rare-earth Dy3+: Struct–Opto–Dielectric–Magnetic characteristics

Ramesh Kumar Raji, Tholkappiyan Ramachandran, M. Muralidharan, R. Suriakarthick, M. Dhilip, A. Raja, K. Aravinth, S. Karthikeyan, P. Ramasamy, Vishista Kurapati, Fathalla Hamed, Abdel Hamid I. Mourad

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The potential technological uses of perovskite-based LaFeO3 nanostructured materials have gotten a lot of interest in recent years. In this present investigation, we have attempted to investigate the substitution of unpaired 4f electrons of the Dy3+ ions into LaFeO3 material would play a crucial role in the various functional properties, thereby enhancing their suitability for various applications. The motivation of this work is to synthesize, rare-earth Dy3+-doped lanthanum ferrite with the composition of La1−xDyxFeO3 (x = 0 to 0.25) using the conventional solid-state reaction method. The effect of Dy3+ substitution in lanthanum ferrite on the physical properties was evaluated using X-ray diffraction, Fourier transform infrared spectroscopy, Raman analysis, scanning electron microscopy, Elemental/mapping analysis, UV–Vis spectroscopy, photoluminescence spectroscopy, dielectric and magnetic measurement techniques. The novelty of this work: the synthesized ferrite materials shows both orthorhombic structured Pbnm phase of LaFeO3 and cubic (I 21 3) Dy2O3 phase were observed from Rietveld refinement of XRD analysis. While increasing the Dy substitution, the Dy2O3 phase starts to increase from 1.44 to 15.05%, respectively. The optical behavior was greatly affected and reduced the optical band gap, Eg values from 3.68 to 3.17 with the effect of Dy. The dielectric properties of synthesized ferrite materials realized a dielectric constant dispersion that displayed a maximum at low frequency. The synthesized La1−xDyxFeO3 ferrite materials displayed canted antiferromagnetic and paramagnetic behavior. The values of saturation magnetization (Ms) were enhanced from 0.108 (x = 0) to 1.383 (x = 0.25) emu/g. It is suggested that synthesized La1−xDyxFeO3 ferrite materials with different optical, dielectric, and magnetic properties could be tailored for different requirements.

Original languageEnglish
Pages (from-to)10626-10644
Number of pages19
JournalJournal of Materials Science: Materials in Electronics
Volume33
Issue number13
DOIs
Publication statusPublished - May 2022

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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