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

Synthesis of nanosized yttrium iron garnet (Y3Fe5O12, 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...

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Bibliographic Details
Published in:Applied physics letters 2016-05, Vol.108 (18)
Main Authors: Lutsev, L. V., Korovin, A. M., Bursian, V. E., Gastev, S. V., Fedorov, V. V., Suturin, S. M., Sokolov, N. S.
Format: Article
Language:English
Subjects:
Applied physics
Chemical synthesis
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
DAMPING
DEPOSITS
Epitaxial growth
FERRITE GARNETS
Ferromagnetic materials
FERROMAGNETIC RESONANCE
GADOLINIUM
Gadolinium-gallium garnet
IRON
IRON OXIDES
Laser beams
Magnons
MOLECULAR BEAM EPITAXY
NANOSTRUCTURES
RELAXATION
SPIN WAVES
SUBSTRATES
WAVE PROPAGATION
Yttrium
YTTRIUM COMPOUNDS
Yttrium-iron garnet
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Summary:Synthesis of nanosized yttrium iron garnet (Y3Fe5O12, 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 × 10−5. 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%.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4948304