Influence of Pr³⁺ substitution on the structural, optical, magnetic, and dielectric properties of Sr2FeTiO6−δ double perovskites

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences Pub Date : 2025-02-01 DOI:10.1016/j.solidstatesciences.2025.107825

J. Stella Punitha , Ramesh Kumar Raji , Tholkappiyan Ramachandran , K. Saravana Kumar , Muthu Dhilip , Fathalla Hamed , A. Nataraj

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引用次数: 0

Abstract

Double perovskite compounds Sr_2-xPr_xFeTiO_6−δ (x = 0.2, 0.4, 0.6, 0.8) were synthesized using a high-temperature solid-state reaction method. X-ray diffraction (XRD) analysis confirmed that all samples exhibit a cubic structure with a space group of Pm-3m. Rietveld refinement using the pseudo-Voigt function confirmed the formation of a single-phase compound with good reliability factors. Scanning electron microscopy (SEM) showed that the particles were spherical with minimal clumping and were uniform in size and shape. Energy dispersive X-ray (EDAX) analysis confirmed the presence of Sr, Pr, Ti, Fe, and O elements. The oxidation states of the constituent elements were validated by X-ray photoelectron spectroscopy (XPS), confirming the stability of the crystal structure. Diffuse reflectance spectroscopy indicated semiconductor-like behavior, with the energy band gap decreasing from 3.24 eV to 2.71 eV as Pr content increased. Dielectric studies showed a frequency and temperature-dependent dielectric constant increases with increasing Pr substitution from x = 0.2 to 0.8. Magnetic measurements revealed a transition from antiferromagnetic to ferromagnetic characteristic as the Pr concentration increased. These findings suggest that the synthesized Sr_2-xPr_xFeTiO_6−δ compounds are promising candidates for use in advanced electronic technologies, magneto-optical storage, optoelectronic devices, and sensor applications.

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来源期刊

Solid State Sciences 化学-无机化学与核化学

CiteScore

6.60

自引率

2.90%

发文量

214

审稿时长

27 days

期刊介绍： Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.