We study experimentally with the spatial resolution the local excitation of the
magnetoacoustic resonance in the laterally confined magnetic structure. We have prepared
a polished layered yttrium iron garnet–gadolinium gallium garnet square film resonator,
which demonstrates high-efficient magnetoacoustic coupling. This structure was placed in
constant magnetic field and excited by microwave current. We demonstrate by the means of
Brillouin light scattering technique the spatial localization of high Q-factor (Q~ 105-106) …

We used Brillouin light scattering to measure the local excitations of magneto-acoustic
resonance at high spatial resolution in a laterally confined magnetic structure. We prepared
a polished yttrium-iron garnet (YIG)/gadolinium-gallium garnet (GGG) square film resonator
with highly efficient magneto-acoustic coupling. The structure was placed in a constant
magnetic field and excited by a microwave current. The magneto-acoustic resonance had a
high quality factor (Q≃ 10 5-10 6). The acoustic resonance was confined to the center of the …