Effect of thermal annealing on the thermoluminescence stability of SrZrO₃ synthesized by solid-state reaction.

IF 1.8 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Applied Radiation and Isotopes Pub Date : 2025-10-04 DOI:10.1016/j.apradiso.2025.112238

C E Bracamonte-Estrada, R Bernal, V E Álvarez-Montaño, C Cruz-Vázquez

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Abstract

This work reports on the influence of sintering time on the reproducibility of the thermoluminescence (TL) of SrZrO₃ phosphors synthesized via the solid-state reaction method, using thermal treatments at 1400 °C for 12, 24, and 36 h. The SrZrO₃ orthorhombic phase was confirmed by X-ray diffraction (XRD), and the TL response was characterized after beta particle irradiation. All samples exhibited a similar glow curve structure, with a prominent peak at 252 °C, a temperature suitable for dosimetric applications. The reproducibility of the TL over ten irradiation-readout cycles was strongly dependent on the sintering time. The sample sintered for 24 h showed significant desensitization (24 % signal loss), while the 12 h sample exhibited sensitization (11 % signal gain). The phosphor sintered for 36 h demonstrated the best performance, with excellent TL reusability, showing a variation of only +5.0 % and a standard deviation of 2.3 %, meeting the suitability criteria for practical dosimetry. These results demonstrate that optimizing the thermal annealing time is crucial for developing SrZrO₃-based dosimeters, and that the 36-h synthesis route yields a promising material for radiation monitoring applications.

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热处理对固态合成SrZrO3热释光稳定性的影响。

本文报道了烧结时间对固相反应法合成的SrZrO3荧光粉在1400℃下热处理12、24、36 h后热释光（TL）再现性的影响。通过x射线衍射（XRD）证实了SrZrO3为正交相，并对β粒子辐照后的TL响应进行了表征。所有样品都表现出相似的发光曲线结构，在252°C（适合剂量学应用的温度）处有一个突出的峰。在10个辐照读出周期内，TL的再现性强烈地依赖于烧结时间。烧结24小时的样品表现出明显的脱敏（24%的信号损失），而12小时的样品表现出敏化（11%的信号增益）。烧结36 h的荧光粉表现出最佳性能，具有良好的TL可重复使用性，变化率仅为+ 5.0%，标准偏差为2.3%，符合实际剂量学的适用性标准。这些结果表明，优化热退火时间对于开发基于srzro3的剂量计至关重要，并且36小时的合成路线产生了一种有前途的辐射监测材料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Radiation and Isotopes 工程技术-核科学技术

CiteScore

3.00

自引率

12.50%

发文量

406

审稿时长

13.5 months

期刊介绍： Applied Radiation and Isotopes provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and peaceful application of nuclear, radiation and radionuclide techniques in chemistry, physics, biochemistry, biology, medicine, security, engineering and in the earth, planetary and environmental sciences, all including dosimetry. Nuclear techniques are defined in the broadest sense and both experimental and theoretical papers are welcome. They include the development and use of α- and β-particles, X-rays and γ-rays, neutrons and other nuclear particles and radiations from all sources, including radionuclides, synchrotron sources, cyclotrons and reactors and from the natural environment. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. Papers dealing with radiation processing, i.e., where radiation is used to bring about a biological, chemical or physical change in a material, should be directed to our sister journal Radiation Physics and Chemistry.