Aluminum‐related acoustic loss in AT‐cut quartz crystals
Aluminum‐related acoustic loss in AT‐cut quartz crystals
复制标题
AT 切割石英晶体中与铝相关的声学损失
DOI：
10.1063/1.334318
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发表时间：
1984
期刊：
影响因子：
--
通讯作者：
Joel J. Martin
中科院分区：
文献类型：
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作者：
Joel J. Martin
所有石英中存在的替代铝离子都需要电荷补偿。在人工合成石英中，间隙碱离子充当电荷补偿器。在200 K以上的温度照射下，碱被捕获在相邻氧上的质子或空穴所取代。电扩散（扫描）可以用质子或另一种特定的碱来取代碱。研究了一系列5 - MHz第五次泛音AT - cut谐振腔空腔在扫描和辐照下的声损失谱。在低于100°C的温度下，没有观察到声损失峰，这可能归因于Al‐Li+或Al‐OH−中心。钠扫描样品在53 K处显示出预期的大损耗峰，而未扫描样品只有非常小的53 K峰。这表明，在人工合成石英中，锂是主要的电荷补偿离子。辐照除去了53 K的峰，并在23、100和135 K处引入了新的峰。退火研究表明……
The substitutional aluminum ions present in all quartz requires charge compensation. In as‐grown synthetic quartz, interstitial alkali ions serve as the charge compensators. Irradiation at temperatures above 200 K replaces the alkali with either a proton or a hole trapped on an adjacent oxygen. Electrodiffusion (sweeping) can be used to replace the alkali with either a proton or another specific alkali. A study of the acoustic loss spectra of a series of 5‐MHz fifth overtone AT‐cut resonator blanks as a function of sweeping and irradiation has been completed. No acoustic loss peaks were observed at temperatures less than 100 °C which could be attributed to either the Al‐Li+ or Al‐OH− centers. Na‐swept samples showed the expected large loss peak at 53 K while unswept samples had only very small 53 K peaks. This shows that in as‐grown synthetic quartz lithium is the primary charge compensating ion. Irradiation removed the 53 K peak and introduced new peaks at 23, 100 K, and 135 K. Annealing studies show tha...