LiMgPO4:Tb,Sm，B - A高灵敏度辐射剂量测定荧光粉

IF 5.6 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-09-01 DOI:10.1016/j.ceramint.2025.06.212

Li Fu , Kaiyong Tang , Hui Cui , Zungang Wang , Zhiyuan Li , Haijun Fan , Yan Zeng , Siyuan Zhang , Mo Zhou

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引用次数: 0

摘要

研制了一种具有超高灵敏度的LiMgPO4:Tb，Sm， b基光激发发光（OSL）荧光粉，用于辐射剂量测定。通过固相反应合成了该材料，并用x射线衍射和扫描电镜对其结构进行了表征。本研究首次系统地研究了LiMgPO4:Tb，Sm，B体系的热释光（TL）和OSL行为，并通过详细的光谱分析确定Tb3+为主要发光中心，在552nm处有一个突出的发射峰。在较宽的线性剂量范围内（0.1 mGy - 20 Gy），该荧光粉表现出卓越的OSL性能，与基准Al2O3:C材料相比，灵敏度提高了10倍。能量响应范围从33 keV到1.25 MeV。该材料具有良好的重现性（RSD < 1.55%），检出限低至0.7 μGy。这些发现确立了LiMgPO4:Tb，Sm，B作为传统Al2O3:C的优越替代品，特别是在人员监测和环境辐射监测应用中。

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LiMgPO4:Tb,Sm,B - A highly sensitive phosphor for radiation dosimetry

A LiMgPO₄:Tb,Sm,B-based optically stimulated luminescent (OSL) phosphor with ultrahigh sensitivity was developed for radiation dosimetry applications. The material was synthesized through solid-state reaction and its structure was characterized by X-ray diffraction and scanning electron microscopy analyses. This study presents the first systematic investigation of both thermoluminescence (TL) and OSL behaviors in the LiMgPO₄:Tb,Sm,B system, with detailed spectral analysis identifying Tb³⁺ as the dominant luminescence center characterized by a prominent emission peak at 552 nm. The phosphor exhibits exceptional OSL performance, demonstrating 10-fold higher sensitivity compared to the benchmark Al₂O₃:C material within a broad linear dose range (0.1 mGy - 20 Gy). The energy response spans from 33 keV to 1.25 MeV. The material maintains excellent reproducibility (RSD <1.55 %) and with a record-low detection limit of 0.7 μGy. These findings establish LiMgPO₄:Tb,Sm,B as a superior alternative to conventional Al₂O₃:C, particularly for personnel monitoring and environmental radiation surveillance applications.

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.