Development of MgAl2O4 spinel single crystal
Abstract
In this paper, the growth of transparent stoichiometric MgAl2O4 spinel single crystals is described. The MgAl2O4, with a melting point of 2105 C, can be grown by the vertical pulling (Czochralski) technique in a resistance furnace with tungsten-bar heating elements. It has been successfully grown into crystals 20 mm in diameter and 150 g in weight. The external appearance of the crystals is regular. Examination of crystals by Laue X-ray diffraction confirms that they are single crystals. They are detected by optical and scanning electronic microscopic analysis. The dislocation density is about 10,000 to 100,000 per sq cm, suitable for epitaxially grown silicon.
- Publication:
-
Tsing Hua University Journal
- Pub Date:
- 1974
- Bibcode:
- 1974TsHUJ...3...45F
- Keywords:
-
- Aluminates;
- Crystal Growth;
- Magnesium Compounds;
- Production Engineering;
- Single Crystals;
- Spinel;
- Electron Microscopes;
- Epitaxy;
- Melting Points;
- Quantitative Analysis;
- Resistance Heating;
- Stoichiometry;
- Temperature Effects;
- X Ray Diffraction;
- Solid-State Physics