Anbarasu, V (2023) Influence of La3+ substitution on the structural, magnetic and electrical characteristics of Sr2FeTiO6 double perovskites. Influence of La3+ substitution on the structural, magnetic and electrical characteristics of Sr2FeTiO6 double perovskites.

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Abstract

In this study, the La3? ions are substituted at the Sr2? site in Sr2FeTiO6 double perovskites using the solid state reaction method. The impact of La3?ion sub- stitution on the Sr2FeTiO6 physical characteristics have been studied. The SrTiO3 structural parameters were utilised as starting model for performing the Riet- veld refinement of powder X-ray diffraction patterns. Cubic symmetry with Pm3m space group was determined for the prepared materials. Due to the larger ionic radii of La3? ion, the La substituted samples showed slight increase in the lattice cell parameters leading to volume expansion. The La-substituted samples don’t exhibit any significant morphological differences when compared to parent compound. The diffused reflectance measurements also show no sig- nificant changes in the band gap values of La-substituted samples in compar- ison with the pure compound. The magnetization studies exhibit the enhanced ferromagnetic nature of La-substituted sample. Thermally activated charge carriers are also evident from the analysis of temperature dependent dielectric measurements.

Item Type: Article
Uncontrolled Keywords: https://doi.org/10.1007/s10854-023-10793-0
Divisions: PSG College of Arts and Science > Department of Physics
Depositing User: Mr Team Mosys
Date Deposited: 17 Feb 2024 09:04
Last Modified: 17 Feb 2024 09:04
URI: http://ir.psgcas.ac.in/id/eprint/2107

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