Elastic and piezoelectric properties of AlN and LiAlO sub(2) single crystals

We have successfully grown high-quality AlN piezoelectric single crystal using the sublimation technique. Transparent crack-free boules of approximately 15 mm in diameter and 25 mm in length along the [0001] direction were obtained, with coloring from amber to dark brown depending on growth temperat...

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Bibliographic Details
Published in:IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 2010-04, Vol.57 (1-4), p.808-811
Main Authors: Sotnikov, Andrey V, Schmidt, Hagen, Weihnacht, Manfred, Smirnova, Elena P, Chemekova, Tatiana Yu, Makarov, Yuri N
Format: Article
Language:English
Subjects:
Aluminum nitride
Boules
Crack propagation
Crystals
Ferroelectric materials
Piezoelectricity
Single crystals
Sublimation
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Summary:We have successfully grown high-quality AlN piezoelectric single crystal using the sublimation technique. Transparent crack-free boules of approximately 15 mm in diameter and 25 mm in length along the [0001] direction were obtained, with coloring from amber to dark brown depending on growth temperature. Full sets of material parameters of grown AlN and commercially available LiAlO sub(2) bulk crystals were measured at room temperature. Temperature coefficients of the material parameters of LiAlO sub(2) were also obtained in a temperature range from -70 to +50 degree C.
ISSN:0885-3010
DOI:10.1109/TUFFC.2010.1485