Luminescent properties of perovskite type GdAlO3: Dy3+ obtained by co-precipitation method

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

Applied Radiation and Isotopes Pub Date : 2025-09-29 DOI:10.1016/j.apradiso.2025.112220

D. Nolasco-Altamirano , A. Alonso-Sotolongo , O.A. García-Garduño , J. Zarate-Medina , S.Y. Vicencio-Hernández , I. Garduño-Wilches , T. Rivera-Montalvo

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引用次数: 0

Abstract

In the present work synthesis and luminescent properties of gadolinium aluminate doped with activator of trivalent ion Dy³⁺ was successful achieved through the coprecipitation method. Powder X-ray diffraction (XRD) technique was employed to identify phase purity on the crystallographic structure. The luminescent properties were investigated using photoluminescence (PL), and thermoluminescence (TL) measurements. Experimental PL measurements revealed that the intensity of luminescence emission was observed with respect to the energy transfer processes between the host and the Dy³⁺. The dependence of thermoluminescence intensity of dopant concentration was investigated with varied depending on the concentration of Dy³⁺ ions. TL measurements were conducted between room temperature (RT) and 350 °C at a heating rate of 10 °C/s. A significant TL glow curve was observed consisting with two peaks centered at 150 and 260 °C under different β-dose exposures. TL response of the powders displayed good linearity in the range of 0.5–44 Gy. Currently findings confirm that gadolinium aluminate as host is a promising candidate for beta radiation studies because exhibits adequate TL dose response with a good sensitivity and linearity for beta radiation application.

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用共沉淀法获得钙钛矿型GdAlO3: Dy3+的发光性质。

本文通过共沉淀法成功地合成了掺杂三价离子Dy3+激活剂的铝酸钆，并获得了发光性能。采用粉末x射线衍射（XRD）技术对晶体结构进行了相纯度鉴定。通过光致发光（PL）和热致发光（TL）测量研究了其发光性能。实验PL测量表明，在宿主和Dy3+之间的能量传递过程中，可以观察到发光发射的强度。研究了掺杂剂浓度对热释光强度的依赖性，并对掺杂剂中Dy3+离子浓度的变化进行了研究。TL测量在室温（RT）至350°C之间进行，加热速率为10°C/s。在不同的β剂量下，在150°C和260°C处观察到显著的TL发光曲线，有两个以中心为中心的峰。粉体的TL响应在0.5 ~ 44 Gy范围内呈良好的线性。目前的研究结果证实，铝酸钆作为宿主是β辐射研究的一个有希望的候选者，因为它具有足够的TL剂量响应，对β辐射应用具有良好的灵敏度和线性。

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.