采用微拉下（μ-PD）技术制备超快Ce-Mg共掺GAGG石榴石单晶光纤

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-09-22 DOI:10.1016/j.optmat.2025.117547

Valerii Kononets , Abdeldjelil Nehari , Pavlo Mai , Christophe Dujardin , Louis Roux , Gilles Ledoux , Roberto Cala , Loris Martinazzoli , Etiennette Auffray , Iaroslav Gerasymov , Oleg Sidletskiy , Kheirreddine Lebbou

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引用次数: 0

摘要

我们证明了在Ce3+掺杂的钆铝镓石榴石Gd3(Ga3Al2)O12 （GAGG:Ce）闪烁晶体中共掺杂镁（Mg2+）以获得快速衰减时间性能的潜力，以及μ-PD技术在高掺杂浓度下生长GAGG:Ce，Mg的可行性。我们通过组成工程证明了Mg2+共掺杂可以增强闪烁动力学。在2500 ppm Ce和500 ppm Mg的情况下，有效衰减时间达到了1 ns，表明Mg2+共掺杂有效地调节了Ce3+/Ce4+激活离子的能量传递途径。这些结果为超快闪烁体材料的发展铺平了道路。

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Ultrafast Ce–Mg codoped GAGG garnet single crystal fibers grown by micro-pulling down (μ-PD) technique

We demonstrate the potential of magnesium (Mg²⁺) co-doping in Ce³⁺-doped gadolinium aluminum gallium garnet Gd₃(Ga₃Al₂)O₁₂ (GAGG:Ce) scintillating crystals to obtain a fast decay time performance and the feasibility of μ-PD technique for growing GAGG:Ce,Mg with high dopant concentrations. We demonstrate that Mg²⁺ co-doping can enhance scintillation kinetics through compositional engineering. An ultra-fast effective decay time of ∼1 ns was achieved with 2500 ppm Ce and 500 ppm Mg, suggesting that Mg²⁺ co-doping modulates energy transfer pathways through Ce³⁺/Ce⁴⁺ activator ions effectively. These results pave the way for the development of ultrafast scintillator materials.

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.