Thick-Film Yttrium Iron Garnet Coatings viaAerosol Deposition

Autor: Johnson, Scooter, Glaser, Evan, Cheng, Shu-Fan, Eddy, Charles, Kub, Fritz, Gorzkowski, Edward
Zdroj: Metallurgical and Materials Transactions E; 20240101, Issue: Preprints p1-5, 5p
Abstrakt: Aerosol deposition is a thick-film deposition process that can produce layers up to several hundred micrometers thick with densities greater than 95 pct of the theoretical value. The primary advantage of aerosol deposition is that the deposition takes place entirely at room temperature, thereby enabling film growth in material systems with disparate melting temperatures. We show representative characterization results of yttrium iron garnet thick films deposited onto a 〈111〉 gadolinium gallium garnet substrate by aerosol deposition using scanning electron microscopy, X-ray diffraction, profilometry, vibrating sample magnetometry, and ferromagnetic resonance. To further elucidate the effect of density and grain size on the magnetic properties, we perform post-deposition annealing of the films to study the effect on the structural and magnetic properties of the films. Our results indicate that our system can successfully deposit dense, thick yttrium iron garnet films and that with moderate annealing the films can achieve a ferromagnetic resonance linewidth comparable to that reported for polycrystalline films deposited by other higher temperature growth techniques.
Databáze: Supplemental Index