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

fYear

2013

fDate

21-25 July 2013

Firstpage

216

Lastpage

219

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2013 IEEE International

Conference_Location

Prague

ISSN

1948-5719

Print_ISBN

978-1-4673-5684-8

Type

conf

DOI

10.1109/ULTSYM.2013.0056

Filename

6725096