Maqola

Exploration of the structural, optical, and dielectric performance of Mg-doped Sr2FeNbO6 double perovskite for wireless applications

Asif UllahDepartment of Physics, University of Science and Technology, Bannu 28100, Khyber Pakhtunkhwa, PakistanFarman UllahDepartment of Physics, University of Science and Technology, Bannu 28100, Khyber Pakhtunkhwa, PakistanKamran UllahState Key Laboratory of Radio Frequency Heterogeneous Integration, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, ChinaFida RehmanDepartment of Physics, Khushal Khan Khattak University Karak, 27200, KPK, PakistanAiyeshah AlhodaibDepartment of Physics, College of Science, Qassim University, Buraydah 51452, Saudi ArabiaSalhah Hamed AlrefaeeDepartment of Chemistry, College of Science, Taibah University, Yanbu 30799, Madinah, Saudi ArabiaShaxnoza SaydaxmetovaDepartment of Chemistry and Its Teaching Methods, Tashkent State Pedagogical University, Tashkent, UzbekistanSalah KnaniCenter for Scientific Research and Entrepreneurship, Northern Border University, Arar 73213, Saudi ArabiaVineet TirthCentral Labs, King Khalid University, AlQura'a, Abha, P.O. Box 960, Saudi ArabiaAli AlgahtaniCentral Labs, King Khalid University, AlQura'a, Abha, P.O. Box 960, Saudi ArabiaAbid ZamanDepartment of Physics, Riphah International University, Islamabad 44000, Pakistan

Electrochemistry Communicationsjournal2025en

ABI

Annotatsiya

This study examined the effects of Mg doping on the structural, optical, photoluminescence, and dielectric properties of a series of double perovskite Sr 2-x MgₓFeNbO₆ (0.00 ≤ x ≤ 0.40) ceramics that is successfully manufactured by using the mixed oxide route. It was proven by X-ray diffraction that a single-phase monoclinic perovskite (space group P21/c.) had formed, and at increasing Mg concentrations, SEM showed reduced porosity and increased grain uniformity. Tauc analysis and UV–Vis spectroscopy revealed a consistent decrease of the bandgap from 2.77 eV to 2.46 eV, which was ascribed to defect-induced electronic states and lattice distortion. The presence of levels of recombination-active defects was further confirmed by photoluminescence spectra. At high temperatures (~560 °C), dielectric studies revealed a low loss (tanδ = 2.0) and a high dielectric constant (εᵣ ≈800), which made these materials attractive options for wireless communication components. Mg-doped Sr₂FeNbO₆ ceramics have the potential for advanced applications in microwave electronics and optoelectronics due to their superior dielectric behavior, bandgap tunability, and integrated structural stability. • Physical characteristics of new solid solution, Sr 2-x Mg x FeNbO 6 (0.0 ≤ x ≤ 0.4) double perovskite ceramics were synthesized via solid-state route. • The Investigation of the Structural and Optical Characteristics of Sr 2-x Mg x FeNbO 6 (0.0 ≤ x ≤ 0.4) double perovskite for wireless applications. • XRD analysis revealed main phase in all prepared samples is monoclinic structure. • The optical and dielectric properties were studied of Sr 2-x Mg x FeNbO 6 (0.0 ≤ x ≤ 0.4) sintered ceramics. • The optical properties were measured by means of the UV–vis absorption spectrometry in order to examine the absorption of materials and determine gap energy.

Mavzular

Microwave Dielectric Ceramics Synthesis Ferroelectric and Piezoelectric Materials Multiferroics and related materials

Identifikatorlar

DOI: 10.1016/j.elecom.2025.107981

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