Effect of distance between a magnet layer and an excitation antenna on the nonreciprocity of magnetostatic surface waves

Kenji Kasahara; Masaki Nakayama; Xiaorui Ya; Kimihide Matsuyama; Takashi Manago

doi:10.7567/JJAP.56.010309

Effect of distance between a magnet layer and an excitation antenna on the nonreciprocity of magnetostatic surface waves

Kenji Kasahara, Masaki Nakayama, Xiaorui Ya, Kimihide Matsuyama, Takashi Manago

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

We investigated the effect of the distance between a magnetic layer and an excitation antenna on the nonreciprocity of magnetostatic surface waves (MSSWs), using devices with various thicknesses of the SiO₂ layer (t_SiO2) to isolate an antenna from a permalloy layer. The nonreciprocity of MSSWs increases with increasing tSiO2. This increase in MSSW nonreciprocity is caused by an increase in the ratio of the MSSW excitation efficiency of the out-of-plane component of a microwave field to that of the in-plane component of a microwave field. Thus, we found that the nonreciprocity of MSSWs can be controlled by a very simple method.

Original language	English
Article number	010309
Journal	Japanese journal of applied physics
Volume	56
Issue number	1
DOIs	https://doi.org/10.7567/JJAP.56.010309
Publication status	Published - Jan 2017

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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abstract = "We investigated the effect of the distance between a magnetic layer and an excitation antenna on the nonreciprocity of magnetostatic surface waves (MSSWs), using devices with various thicknesses of the SiO2 layer (tSiO2) to isolate an antenna from a permalloy layer. The nonreciprocity of MSSWs increases with increasing tSiO2. This increase in MSSW nonreciprocity is caused by an increase in the ratio of the MSSW excitation efficiency of the out-of-plane component of a microwave field to that of the in-plane component of a microwave field. Thus, we found that the nonreciprocity of MSSWs can be controlled by a very simple method.",

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AU - Kasahara, Kenji

AU - Nakayama, Masaki

AU - Ya, Xiaorui

AU - Matsuyama, Kimihide

AU - Manago, Takashi

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AB - We investigated the effect of the distance between a magnetic layer and an excitation antenna on the nonreciprocity of magnetostatic surface waves (MSSWs), using devices with various thicknesses of the SiO2 layer (tSiO2) to isolate an antenna from a permalloy layer. The nonreciprocity of MSSWs increases with increasing tSiO2. This increase in MSSW nonreciprocity is caused by an increase in the ratio of the MSSW excitation efficiency of the out-of-plane component of a microwave field to that of the in-plane component of a microwave field. Thus, we found that the nonreciprocity of MSSWs can be controlled by a very simple method.

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Effect of distance between a magnet layer and an excitation antenna on the nonreciprocity of magnetostatic surface waves

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