Issue 63, 2021

Structural, morphological, dielectric and optical properties of double perovskites RBaFeTiO6 (R = La, Eu)

Abstract

Double perovskites RBaFeTiO6 (R = La, Eu) were successfully synthesized using a solid state reaction route. Structural refinement analysis has been performed to investigate the details of the crystalline structure which was found to be a cubic double perovskite structure at room temperature (space group Pm[3 with combining macron]m, No. 221). Crystallite size, lattice strain, density, and porosity parameters were also calculated. The morphology and the elemental composition were analyzed by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and elemental mapping. FTIR and Raman scattering spectroscopy have been performed in order to study the vibrational modes and the various bond formations of the synthesized samples. The optical properties investigated by means of the optical absorbance measurements highlight that both materials present large band gap energies, and are thus potential candidates for various technological applications. The electrical behavior of these double perovskites was also studied by frequency-dependent dielectric measurements and impedance spectroscopy. The electrical conduction follows Jonscher's power law and the conduction mechanisms are identified.

Graphical abstract: Structural, morphological, dielectric and optical properties of double perovskites RBaFeTiO6 (R = La, Eu)

Article information

Article type
Paper
Submitted
09 Sep 2021
Accepted
08 Dec 2021
First published
17 Dec 2021
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2021,11, 40205-40215

Structural, morphological, dielectric and optical properties of double perovskites RBaFeTiO6 (R = La, Eu)

L. Boudad, M. Taibi, A. Belayachi and M. Abd-lefdil, RSC Adv., 2021, 11, 40205 DOI: 10.1039/D1RA06793A

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