Control of SrF2 crystal size in transparent germanate oxyfluoride glass-ceramics through Eu2O3 doping

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

Journal of Non-crystalline Solids Pub Date : 2025-07-11 DOI:10.1016/j.jnoncrysol.2025.123695

Alizée Deslandes , Théo Guérineau , Mathieu Allix , Cécile Genevois , Jingxian Wang , Véronique Jubera , Younès Messaddeq , Thierry Cardinal

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Abstract

The development of transparent glass-ceramics is a challenging endeavor in the field of mid-infrared photonics in order to fabricate robust and optically efficient materials. In this study, the glass-forming region of the novel xGeO₂ – (100-x) (BaF₂, SrF₂, ½ In₂O₃) system is investigated, while SrF₂-forming glass-ceramic compositions are identified. DSC measurements upon Eu₂O₃ doping show a decrease in the onset temperature of SrF₂ crystallization. In the meantime, both XRD and TEM acquisitions confirm a decrease in crystal size as the dopant content increases. Part of the Eu³⁺ ions enter the SrF₂ crystallites, as demonstrated by steady-state and time-resolved spectroscopies. Hence, we demonstrate that europium oxide doping enables a precise control of SrF₂ nanocrystal size in the GeO₂-BaF₂-SrF₂-In₂O₃ system. Our findings open doors towards the nanostructure tailoring of SrF₂-containing germanate glass-ceramics using rare-earth dopants for luminescence and laser applications.

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Eu2O3掺杂控制透明氟化锗酸盐微晶玻璃中SrF2晶粒尺寸

透明微晶玻璃是中红外光子学领域的一项具有挑战性的工作，目的是制造出坚固、光学高效的材料。在这项研究中，研究了新型xGeO2 - (100-x) （BaF2, SrF2，½In2O3）体系的玻璃形成区域，并鉴定了SrF2形成的玻璃陶瓷成分。Eu2O3掺杂后的DSC测量结果表明，SrF2结晶的起始温度降低。同时，XRD和TEM分析证实，随着掺杂物含量的增加，晶体尺寸减小。稳态光谱和时间分辨光谱表明，部分Eu3+离子进入SrF2晶体。因此，我们证明了氧化铕掺杂可以精确控制GeO2-BaF2-SrF2-In2O3体系中SrF2纳米晶体的尺寸。我们的研究结果为使用稀土掺杂剂制备含srf2的锗酸玻璃陶瓷的纳米结构打开了大门，用于发光和激光应用。

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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.