Low-relaxation spin waves in laser-molecular-beam epitaxy grown nanosized yttrium iron garnet films

Journal Article · Mon May 02 00:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4948304· OSTI ID:22591674

Korovin, A. M.; Bursian, V. E.; Gastev, S. V.; Fedorov, V. V.; Suturin, S. M.; Sokolov, N. S. ^[1]

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1. Ioffe Physical-Technical Institute, Russian Academy of Sciences, 194021 St. Petersburg (Russian Federation)

Synthesis of nanosized yttrium iron garnet (Y{sub 3}Fe{sub 5}O{sub 12}, YIG) films followed by the study of ferromagnetic resonance (FMR) and spin wave propagation in these films is reported. The YIG films were grown on gadolinium gallium garnet substrates by laser molecular beam epitaxy. It has been shown that spin waves propagating in YIG deposited at 700 °C have low damping. At the frequency of 3.29 GHz, the spin-wave damping parameter is less than 3.6 × 10{sup −5}. Magnetic inhomogeneities of the YIG films give the main contribution to the FMR linewidth. The contribution of the relaxation processes to the FMR linewidth is as low as 1.2%.

• OSTI ID: 22591674
• Journal Information: Applied Physics Letters, Vol. 108, Issue 18; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DAMPING
DEPOSITS
FERRITE GARNETS
FERROMAGNETIC RESONANCE
FILMS
GADOLINIUM
IRON
IRON OXIDES
MOLECULAR BEAM EPITAXY
NANOSTRUCTURES
RELAXATION
SPIN WAVES
SUBSTRATES
WAVE PROPAGATION
YTTRIUM COMPOUNDS