1990/06/01 by F. Iwasaki, Armando Hideki Shinohara, Hideo Iwasaki +1 · 16 citations
Chemistry · Earth and Planetary Sciences · Engineering · Materials Science · #Analytical Chemistry (journal) #Bar (unit) #Chemical engineering #Chemistry #Chromatography #Crystal (programming language) #Crystal growth #Crystallography #Geology #Geometry #Glass properties and applications #Hydrothermal circulation #Hydrothermal synthesis #Impurity #Materials science #Metallic Glasses and Amorphous Alloys #Metallurgy #Mineralogy #Mineralogy and Gemology Studies #Morphology (biology) #Perpendicular #Quartz
paper · pdf · doi:10.1143/jjap.29.1139
published in Japanese Journal of Applied Physics 29(6R), 1139 (Institute of Physics)
openalex publication_date 1990/06/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
The effects of Al and H impurities on the crystal morphology of Y -bar synthetic quartz were studied. The growth velocities perpendicular to the Y -axis were evaluated in relation to the Al and H impurity segregations on the growth interfaces. It was found that the - X -growth region has the highest H content and shows the lowest growth velocity, due to the effect of H 2 O adsorbed on the growth interface in hydrothermal solution. Therefore, the - X -face, (1̄1̄20), always becomes larger in size. Al has a selective effect on the (112̄2) and (1̄1̄22̄) faces to suppress the growth velocities and thus is important for crystal morphology. The growth velocities perpendicular to these faces, however, are controllable by the Al impurity content in the nutrient.