Examples of artificially grown crystals
lithium aluminum oxide, "lithium aluminate"
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| For details see B. Veličkov, A. Mogilatenko, R. Bertram, D. Klimm, R. Uecker, W. Neumann, R. Fornari, J. Crystal Growth 310 (2008) 214-220. The crystal was grown and the picture was taken by M. Br� IKZ Berlin. |
Crystal details |
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| Compound name | lithium aluminum oxide, "lithium aluminate" |
| Formula | LiAlO2 |
| Dimensions | 2" diameter, ca. 80 mm length |
| Mass | ca. 400 g |
| Colour | colorless |
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Growth conditions |
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| Technique | Czochralski |
| Temperature | 2000 K |
| Pressure | 1 bar |
| Growth rate | |
| Solvent | undoped |
| Doping procedure | undoped |
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Comments |
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| Application(s) | The crystal is tetragonal and wafers (100), (001), (111) are used as substrates for nitride (especially GaN) epitaxial layers. After epitaxy, the LiAlO2 substrate can easily be removed by etching e.g. in diluted HCl. |
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