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Growth and crystallinity of shaped and multiple sapphire crystals by a micro-pulling-down method
- Source :
-
Journal of Crystal Growth . Mar2011, Vol. 318 Issue 1, p983-986. 4p. - Publication Year :
- 2011
-
Abstract
- Abstract: We developed a growth technique of shape-controlled and multiple crystals by a micro-pulling-down (μ-PD) method using a developed special configuration crucible. A square tube-shaped sapphire crystal was grown with a molybdenum crucible with square tube die of 4mm×4mm outer periphery and 2mm×2mm inner periphery on the bottom. In contrast, six multiple square-shaped sapphire crystals were simultaneously grown by a molybdenum crucible with six circularly arranged square-shaped dies with a size of 2×2mm2 on the bottom. Growth of six multiple square-shaped sapphire crystals indicated a single phase of α-Al2O3 and almost same lattice parameters by X-ray diffraction measurement. Crystallinities of the six crystals were high in all positions of crystals comparable to the crystals grown by the Czochralski method. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00220248
- Volume :
- 318
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Crystal Growth
- Publication Type :
- Academic Journal
- Accession number :
- 59457572
- Full Text :
- https://doi.org/10.1016/j.jcrysgro.2010.10.024