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Y₃Al₅O₁₂单晶体的结构和光学特性,这些单晶体被快速重的Xe离子辐射

Alma Dauletbekova¹, Zhadiger Dosmagambetov², Ilze Manika³

¹Department of Technical Physics, L.N. Gumilyov Eurasian National University, Satbayev Str. 2, Astana, 100000, Kazakhstan. ak.dauletbekova@gmail.com.

Scientific reports

|November 27, 2025

概括

伊花 (YAG) 晶体的快速重离子辐射会产生无形层和缺陷. 观察到氧气空缺增加和抗位缺陷,影响材料性能.

科学领域:

材料科学材料科学材料科学
核材料核材料核材料
固态物理固态物理

背景情况:

先进的光学材料,如伊石 (Y₃Al₅O₁₂),对于各种技术应用至关重要.
了解辐射对这些材料的影响对于预测它们在高辐射环境中的性能和寿命至关重要.

研究的目的:

为了研究Y₃Al₅O₁₂晶体上由快速重的230 MeV Xe离子引起的多面辐射效应.
作为离子流动的函数,描述Y₃Al₅O₁₂中的结构,光学和机械变化.

主要方法:

辐射Y₃Al₅O₁₂晶体与230 MeV Xe离子的辐射到从6 × 10¹⁰到10¹³离子/cm²的流动度.
使用光学吸收,拉曼光谱,光发光,纳米硬度测试和高分辨率传输电子显微镜 (HRTEM).
分析了缺陷形成,轨道特征以及光学和机械性能的变化.

主要成果:

形成无形的近表面层和材料软化在高流动性由于重叠的离子轨迹.
HRTEM证实连续轨道 (核心直径~5 nm) 被损坏区域 (~10 nm) 包围,能量损失>10 keV/nm.
氧空位 (F和F+中心) 的度增加和Y_Al抗位缺陷,随着流动度的增加而观察到,可能形成Y_Al-F+二次体.

结论:

快速重离子辐射显著改变了Y₃Al₅O₁₂晶体的结构和特性.
观察到的缺陷,包括无形轨迹,氧气空缺和抗位缺陷,直接与离子能量沉积和重叠轨道现象有关.
这些发现为YAG的辐射损伤机制提供了关键的见解,为其在辐射密集型应用中的使用提供了信息.

关键词:

纳米硬度纳米硬度纳米硬度光学吸收和光发光的发生.拉曼光谱是拉曼光谱中的一个.快速运行重离子的重离子.同步子辐射的辐射.这就是Y3Al5O12的含量.

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