Dielectric and polar properties of aluminum nitride single crystals

The results of the dielectric, pyroelectric, and piezoelectric studies of aluminum nitride single crystals are presented in this paper. The crystals were grown by sublimation and hybrid-chloride vapor phase epitaxy, which provided high growth rates, large sizes, and the ability to reduce structural...

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Bibliographic Details
Published in:Ferroelectrics 2021-05, Vol.576 (1), p.55-61
Main Authors: Sergeeva, O. N., Solnyshkin, A. V., Kukushkin, S. A., Sharofidinov, Sh. Sh, Kazarova, O. P., Mohov, E. N., Yu. Kaptelov, E., Pronin, I. P.
Format: Article
Language:English
Subjects:
Aluminum
Aluminum nitride
Aluminum nitride single crystals
Crystal defects
Crystal growth
Crystals
dielectric
Epitaxial growth
Infrared lasers
Piezoelectricity
pyroelectric and piezoelectric properties
Pyroelectricity
Single crystals
Sublimation
Vapor phase epitaxy
Vapor phases
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Summary:The results of the dielectric, pyroelectric, and piezoelectric studies of aluminum nitride single crystals are presented in this paper. The crystals were grown by sublimation and hybrid-chloride vapor phase epitaxy, which provided high growth rates, large sizes, and the ability to reduce structural defects. The pyroelectric effect measurements by a dynamic method using infrared laser radiation (λ = 980 nm) revealed high values of the pyroelectric coefficient up to 30 µC/(m 2 K). The piezoelectric coefficient d 31 was found about 1.6⋅10 −12 m/V.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2021.1888260