The effect of Ga-ion irradiation on sub-micron-wavelength spin waves in yttrium-iron-garnet films

Greil Johannes; Kiechle Martina; Papp Ádám; Neumann Péter Lajos; Kovács Zoltán; Volk János; Schulz Frank; Wintz Sebastian; Weigand Markus; Csaba György; Becherer Markus: The effect of Ga-ion irradiation on sub-micron-wavelength spin waves in yttrium-iron-garnet films.
NANOTECHNOLOGY, 36 (13). ISSN 0957-4484 (2025)

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Folyóiratcikk

Szerző azonosítók:

Név	ORCID	MTMT szerző azonosító
Greil Johannes	0009-0009-5693-7736
Kiechle Martina
Papp Ádám		10045902
Neumann Péter Lajos	0000-0002-2881-5733	10017164
Kovács Zoltán	0009-0005-8564-4132	10056848
Volk János	0000-0003-3633-6190	10002199
Schulz Frank
Wintz Sebastian	0000-0001-6138-8078
Weigand Markus
Csaba György		10057150
Becherer Markus

Absztrakt (kivonat):

We investigate the effect of focused-ion-beam (FIB) irradiation on spin waves with sub-micron wavelengths in yttrium-iron-garnet films. Time-resolved scanning transmission x-ray microscopy was used to image the spin waves in irradiated regions and deduce corresponding changes in the magnetic parameters of the film. We find that the changes of Ga + irradiation can be understood by assuming a few percent change in the effective magnetization M eff of the film due to a trade-off between changes in anisotropy and effective film thickness. Our results demonstrate that FIB irradiation can be used to locally alter the dispersion relation and the effective refractive index n eff of the film, even for submicron wavelengths. To achieve the same change in n eff for shorter wavelengths, a higher dose is required, but no significant deterioration of spin wave propagation length in the irradiated regions was observed, even at the highest applied doses.

Folyóirat címe:

NANOTECHNOLOGY

Megjelenés éve:

2025

Kötet:

Szám:

ISSN:

0957-4484

Intézmény:

Pázmány Péter Katolikus Egyetem

Kar:

Információs Technológiai és Bionikai Kar (2013.07.-)