Title :
Acoustically driven magnetic excitations in BAW resonators with magnetic layers
Author :
Polzikova, Natalia ; Alekseev, Sergej ; Kotelyanskii, Iosef ; Raevskiy, Alexander
Author_Institution :
Kotel´nikov Inst. of Radio-Eng. & Electron., Moscow, Russia
Abstract :
The theoretical and experimental study of a composite BAW resonator, containing layers of magnets and nonmagnetic dielectric/piezoelectric (epitaxial YIG films on GGG substrate and Al-ZnO-Al transducer), placed in bias magnetic field is presented. It is shown theoretically that due to excitations of magnetic oscillations in YIG via the magnetoelastic interaction the shift of resonance frequency in the range of intermodal distance (about 3 MHz) and Q-factor reduction of BAW resonator resonance take place. Near acoustic resonance frequency 2.5 GHz at a given effective magnetic field, corresponding to magnetoacoustic resonance, the frequency tuning in the range of ± 2 MHz was experimentally observed.
Keywords :
acoustic resonators; aluminium; bulk acoustic wave devices; magnetoacoustic resonance; yttrium compounds; zinc compounds; Al-ZnO-Al; BAW resonators; Q factor reduction; YIG; acoustically driven magnetic excitations; bias magnetic field; frequency 2.5 GHz; frequency tuning; intermodal distance; magnetic layers; magnetic oscillations; magnetoacoustic resonance; magnetoelastic interaction; near acoustic resonance frequency; nonmagnetic dielectric; nonmagnetic piezoelectric; Acoustics; Magnetic fields; Magnetic resonance; Magnetoacoustic effects; Magnetoelectric effects; Magnetostriction; BAW; HBAR; YIG; ZnO; magneto acoustic resonance; magnetoelastic;
Conference_Titel :
Ultrasonics Symposium (IUS), 2013 IEEE International
Conference_Location :
Prague
Print_ISBN :
978-1-4673-5684-8
DOI :
10.1109/ULTSYM.2013.0056
