Radiation effects in crystalline SiO2: The role of aluminum
Radiation effects in crystalline SiO2: The role of aluminum
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晶体 SiO2 中的辐射效应：铝的作用
DOI：
10.1063/1.329138
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发表时间：
1981
期刊：
影响因子：
--
通讯作者：
Joel J. Martin
中科院分区：
文献类型：
--
作者：
L. Halliburton;N. Koumvakalis;M. Markes;Joel J. Martin
电子自旋共振(ESR)和红外吸收(IR)实验提供了有关铝在商业上可获得的高质量合成石英的辐射响应中所起作用的信息。对来自两个不同来源的样品进行了调查，发现两种材料的辐射响应相同。H~+、Li~+、Na~+等间隙离子和氧离子上的辐射诱导空穴是替代铝离子的电荷补偿器。通常，电荷补偿器位于铝附近，这会产生Al-OH−、Al-Li+、Al-Na+和[AlE+]0中心。对于扫描和未扫描的各种样品，这些补偿的铝中心的绝对浓度已被确定为辐照和退火温度的函数。不同的处理方法简单地将一种补偿器换成另一种补偿器，在实验误差范围内，铝中心的总和保持不变。
Electron spin resonance (ESR) and infrared absorption (IR) experiments have provided information about the role of aluminum in the radiation response of commercially available high‐quality synthetic quartz. Samples obtained from two separate sources were investigated, and identical radiation responses were found for the two materials. Interstitial ions such as H+, Li+, and Na+ as well as radiation‐induced holes trapped at oxygen ions act as charge compensators for the ever‐present substitutional aluminum ions. Usually the charge compensator is located adjacent to the aluminum, and this gives rise to Al‐OH−, Al‐Li+, Al‐Na+, and [Ale+]0 centers. Absolute concentrations of these compensated aluminum centers have been determined as a function of irradiation and annealing temperature for a variety of samples, both swept and unswept. The various treatments simply exchange one type of compensator for another at the aluminum sites, and within experimental error, the sum of the aluminum centers remains constant fo...