Spin wave absorber generated by artificial surface anisotropy for spin wave device network

Naoki Kanazawa; Taichi Goto; Koji Sekiguchi; Alexander B. Granovsky; Hiroyuki Takagi; Yuichi Nakamura; Mitsuteru Inoue

doi:10.1063/1.4962664

AIP Advances (Sep 2016)

Spin wave absorber generated by artificial surface anisotropy for spin wave device network

Naoki Kanazawa,
Taichi Goto,
Koji Sekiguchi,
Alexander B. Granovsky,
Hiroyuki Takagi,
Yuichi Nakamura,
Mitsuteru Inoue

Affiliations

Naoki Kanazawa: Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibari-Ga-Oka, Tempaku, Toyohashi, Aichi 441-8580, Japan
Taichi Goto: Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibari-Ga-Oka, Tempaku, Toyohashi, Aichi 441-8580, Japan
Koji Sekiguchi: JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
Alexander B. Granovsky: Faculty of Physics, Moscow State University, Leninskie Gory, Moscow 119992, Russia
Hiroyuki Takagi: Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibari-Ga-Oka, Tempaku, Toyohashi, Aichi 441-8580, Japan
Yuichi Nakamura: Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibari-Ga-Oka, Tempaku, Toyohashi, Aichi 441-8580, Japan
Mitsuteru Inoue: Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibari-Ga-Oka, Tempaku, Toyohashi, Aichi 441-8580, Japan

DOI: https://doi.org/10.1063/1.4962664
Journal volume & issue: Vol. 6, no. 9
pp. 095204 – 095204-6

Abstract

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Spin waves (SWs) have the potential to reduce the electric energy loss in signal processing networks. The SWs called magnetostatic forward volume waves (MSFVWs) are advantageous for networking due to their isotropic dispersion in the plane of a device. To control the MSFVW flow in a processing network based on yttrium iron garnet, we developed a SW absorber using artificial structures. The mechanical surface polishing method presented in this work can well control extrinsic damping without changing the SW dispersion of the host material. Furthermore, enhancement of the ferromagnetic resonance linewidth over 3 Oe was demonstrated.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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