Abstract
In this report, Y-doped acoustic superlattice (ASL) lithium niobate (LN) crystal with linear taper of period was grown by the Czochralski method. The ferroelectric domain structure was revealed by optical photomicrograph. When an alternating electric field of frequency ranging from 680 MHz to 1100 MHz was applied, a ultrasonic wave with the same frequency was excited implying that a high-frequency bulk wave device with broad bandwidth could be fabricated.
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