MnO2-doped tellurite glasses: Potential and performance in faraday rotator technologies

IF 3.2 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of Non-crystalline Solids Pub Date : 2025-04-17 DOI:10.1016/j.jnoncrysol.2025.123541

Paramesh Goud Yamagouni , Ravi Nirlakalla

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Abstract

Transition metal oxides (V₂O₅, Fe₂O₃, MnO₂) and Na₂O -doped tellurite (TeO₂) glasses (TVFN) and (TVFNMn), were fabricated to examine for structural, magnetic and optical properties. The concentration of OH⁻ ions in TVFNMn glasses was determined to be ∼1.2932 × 10¹⁸ ions/cm³. Solid-state ²³Na nuclear magnetic resonance spectroscopy of TVFN glass showed broadened and split peaks. Electron spin resonance spectroscopy of TVFNMn glasses are evidenced for free electrons by a g value of 1.994. Magnetic measurements using a vibrating sample magnetometer showed that TVFNMn glasses exhibit a high saturation magnetization of 0.3118 Am²/Kg and a remanence of 22.69 × 10⁻³ Am²/Kg. In addition, the paramagnetic TVFN glasses were revealed a Verdet constant of -8.83 rad T⁻¹m⁻¹ at 550 nm wavelength. Optical band gap measurements revealed both direct (1.91 eV) and indirect (0.25 eV) band gaps in TVFNMn glasses. These results find that TVFNMn glasses are promising for Faraday rotator applications.

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掺mno2碲酸盐玻璃：法拉第旋转体技术的潜力和性能

制备了过渡金属氧化物（V2O5, Fe2O3, MnO2）和掺Na2O的碲酸盐（TeO2）玻璃（TVFN）和（TVFNMn），考察了它们的结构、磁性和光学性能。测定了TVFNMn玻璃杯中OH -⁻-离子的浓度为~ 1.2932 × 10¹⁸离子/cm³。TVFN玻璃的固态²³Na核磁共振波谱显示出波峰展宽和劈裂。电子自旋共振谱证明了TVFNMn玻璃中自由电子的g值为1.994。用振动样品磁强计测量的结果表明，TVFNMn玻璃的饱和磁化强度为0.3118 Am²/Kg，剩余物为22.69 × 10⁻³Am²/Kg。此外，顺磁性TVFN玻璃在550 nm波长处的Verdet常数为-8.83 rad T−1m−1。光学带隙测量显示在TVFNMn玻璃中存在直接带隙（1.91 eV）和间接带隙（0.25 eV）。这些结果表明，TVFNMn玻璃在法拉第旋转器的应用前景广阔。

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来源期刊

Journal of Non-crystalline Solids 工程技术-材料科学：硅酸盐

CiteScore

6.50

自引率

11.40%

发文量

576

审稿时长

35 days

期刊介绍： The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid. In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.