Ultrasonic Micro-Spectroscopy of Synthetic Sapphire Crystals
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概要
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Accurate measurements of the longitudinal and shear velocities, densities, elastic constants, and lattice constants of two sapphire single-crystal ingots grown by the Bagdasarov method and the Kyropulos method are reported. No significant differences were observed in the acoustic properties of the two crystals. The elastic constants and densities were accurately determined, with considerable differences in $c_{13}$, $c_{14}$, and $c_{33}$, as compared with the published constants, and the sign of $c_{14}$ was confirmed to be positive.
- 2008-04-25
著者
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Kushibiki Jun-ichi
Deparment Of Electrical Engineering Faculty Of Engineering Tohoku University
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Arakawa Mototaka
Department Of Electrical Engineering Tohoku University
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Madani Yasuo
Department of Electrical Engineering, Tohoku University, Sendai 980-8579, Japan
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