Article ID Journal Published Year Pages File Type
1621820 Journal of Alloys and Compounds 2009 4 Pages PDF
Abstract
Alumina-rich spinel is a new substrate for fabricating high-quality GaN-based light-emitting diodes. 1:3 spinel crystals (1 MgO for 3Al2O3) with dimension of diameter 36 mm × 55 mm have been grown by the Czochralski method. The crystal structure and lattice parameters were evaluated by single-crystal X-ray diffraction. The thermal expansion coefficient is 8.1508 × 10−6 K−1 in the temperature range from 30 °C to 1000 °C. The optical transmission studies show the grown crystal possesses good optical transparency with no magnesium deficiency absorption peaks.
Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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