Influence of Fe substitution on the Eu-doped lithium borosilicate glass system's physical, thermal, magnetic, and luminescent properties

• Published in: Journal of materials science. Materials in electronics 2024-02, Vol.35 (4), p.273, Article 273
• Main Authors: Kashif, I., Montes, M. L., Taylor, M. A., Ratep, A.
• Format: Article
• Language: English
• Subjects: Borosilicate glass; Characterization and Evaluation of Materials; Chemistry and Materials Science; Emission spectra; Energy levels; Europium compounds; Ferric ions; Ferrous ions; Iron; Lithium; Magnetic permeability; Magnetic properties; Materials Science; Metal oxides; Metals; Molar volume; Mossbauer spectroscopy; Optical and Electronic Materials; Optical properties; Spectrum analysis; Temperature; Valence
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-023-11894-6

The quenching melt process was used to create transparent glass samples of the Fe and Eu-co-doped lithium borosilicate glasses. The structure of the glass sample affects the molar volume, optical band gap, and thermal characteristics (glass transitions, softening, and melting temperatures). According to Mössbauer spectroscopy, the Fe 2+ /(Fe 2+  + Fe 3+ ) ratio remains between 0.1 and 0.13, and the valence state of iron ions is not significantly altered with Eu 2 O 3 presence. With increasing Eu 2 O 3 content, magnetic susceptibility was shown to decrease. Energy levels determined by UV/Vis and NIR spectroscopy, located at 362, 380, 395, 414, 465, 533, 583, 590, 2092, and 2202 nm were assigned to 7 F 0  →  5 D 4 , 7 F 0  →  5 G 2 , 7 F 0  →  5 L 6 , 7 F 0  →  5 D 3 , 7 F 0  →  5 D 2 , 7 F 0  →  5 D 1 , and 7 F 0  →  5 D 0 electronic transitions, respectively. Five transition band emission spectra were identified using an excitation wavelength of 395 nm. It was observed that by increasing Fe 3+ , the intensity of the emission peak decreases.