Impurity species in synthetic and Brazilian natural quartz
Impurity species in synthetic and Brazilian natural quartz
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合成石英和巴西天然石英中的杂质种类
DOI：
10.1143/jjap.32.893
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发表时间：
1993
影响因子：
1.5
通讯作者：
H. Iwasaki
中科院分区：
文献类型：
--
作者：
F. Iwasaki;H. Iwasaki
采用红外吸收光谱法和原子吸收光谱法研究了合成石英和巴西天然石英中的杂质种类。结果表明，合成石英中几乎所有的Al离子都以Al（3+）的取代型掺入。间隙Al存在的可能性很小。在含锂溶液中生长的Al相关中心的形成过程中，Al（3+）的主要电荷补偿器是Li（+）。在天然石英中，Al（3+）的电荷被Li（+）和H（+）补偿，形成Al-Li和Al- oh中心。在合成石英和天然石英中，Na（+）离子与H2O杂质结合在晶体中。al孔中心的含量由于？辐照量与Al-Li中心含量近似成正比，与H2O杂质含量成反比。
Impurity species in synthetic and Brazilian natural quartz were studied by means of infrared absorption spectroscopy and atomic absorption spectrometry. It is shown that almost all of the Al ions in synthetic quartz are incorporated as a substitutional type of Al(3+). The possibility of the existence of interstitial Al is small. In the formation of Al-related centers in crystals grown in Li-containing solution, the dominant charge compensator for Al(3+) is Li(+). In natural quartz, the charge of Al(3+) is compensated by Li(+) and H(+) to form Al-Li and Al-OH centers. Na(+) ions are incorporated into crystal with H2O impurities both in synthetic and natural quartz. The content of Al-hole centers due to ? irradiation is approximately proportional to the content of Al-Li centers and inversely proportional to H2O impurity content.