Tunable reflector of SAW based on induced piezoeffect in ferroelectrics

Theoretical investigation results of the periodic domain structures induced by electric field in barium strontium titanate ferroelectric thin film are presented. A novel type of tunable SAW reflector based on electric field induced piezoelectric effect in ferroelectric thin film is proposed. Finite element simulation revealed the possibility of application the tunable reflector for the electrically frequency tuning of STW resonator.