Comparison of Quartz Crystals Grown from Fused Silica and from Crystalline Nutrient

摘要

Synthetic quartz crystals are traditionally grown from a crystalline nutrient. Most of the present crystal growth is from natural quartz nutrient imported from Brazil. This material is handpicked for quality but does not have limited purity levels. The raw material may or may not contain levels of impurities that are detrimental to the intended purpose of the grown crystal. Impurity concentration and species of natural lascus are not uniform or consistent even when produced from the same source of supply. This work reports a comparison of crystals grown in 1978 from a fused silica nutrient and crystalline nutrient in a new autoclave to those recently grown in the same aged autoclave. Several crystal characteristics are discussed. 8 figures, 1 table. (ERA citation 07:059768)