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Fabrication of acoustic superlattice LiNbO[sub 3] by pulsed current induction and its application for crossed field ultrasonic excitation.
- Source :
-
Applied Physics Letters . 9/18/2000, Vol. 77 Issue 12. 2 Black and White Photographs, 2 Graphs. - Publication Year :
- 2000
-
Abstract
- An acoustic superlattice LiNbO[sub 3] crystal with periodic ferroelectric domain structure was fabricated by introducing a periodic electric current through the solid-liquid interface during the crystal growing process. The domain morphology of an as-grown crystal was observed with a scanning electron microscope, and was found to be of good periodicity. A light diffraction experiment indicated that there was a periodic fluctuation of the dielectric constant along the crystal's growing direction. Using the "crossed field" scheme, a 340 MHz ultrasonic was excited in the crystal, which means that the acoustic superlattice is suitable for constructing high-frequency bulk-wave acoustic devices. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]
- Subjects :
- *FERROELECTRIC crystals
*SUPERLATTICES
Subjects
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 77
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 4414262
- Full Text :
- https://doi.org/10.1063/1.1311817