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

被引：27
|
作者：
Lutsev, L. V. [1 ]
Korovin, A. M. [1 ]
Bursian, V. E. [1 ]
Gastev, S. V. [1 ]
Fedorov, V. V. [1 ]
Suturin, S. M. [1 ]
Sokolov, N. S. [1 ]
机构：
[1] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
来源：
APPLIED PHYSICS LETTERS | 2016年 / 108卷 / 18期
基金：
俄罗斯基础研究基金会;
关键词：
FERROMAGNETIC NANOPARTICLES; GRANULAR STRUCTURES; MODES;
D O I：
10.1063/1.4948304
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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 degrees C have low damping. At the frequency of 3.29 GHz, the spin-wave damping parameter is less than 3.6 x 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%. Published by AIP Publishing.
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页数：5
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