Magnetostatic spin wave in a very thin CoFeB film grown on an amorphous FeZr buffer layer

Dongseok Kim; Kohei Nawaoka; Shinji Miwa; Seung Young Park; Yoichi Shiota; Chun Yeol You; Jaehun Cho; Byung Chan Lee; Yoshishige Suzuki; Kungwon Rhie

doi:10.3938/jkps.67.906

Magnetostatic spin wave in a very thin CoFeB film grown on an amorphous FeZr buffer layer

Dongseok Kim, Kohei Nawaoka, Shinji Miwa, Seung Young Park, Yoichi Shiota, Chun Yeol You, Jaehun Cho, Byung Chan Lee, Yoshishige Suzuki, Kungwon Rhie

Department of Physics and Chemistry

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

2 Scopus citations

Abstract

The transmission of a magnetostatic spin wave in a very thin CoFeB film (2.3 nm) grown on an amorphous paramagnetic FeZr layer was demonstrated for the first time by using an antenna method with coplanar waveguides. The attenuation length, determined by using the difference in intensities due to a change in the distance between the antennas, was estimated to be 0.7 µm. We discuss why we are able to observe spin-wave propagation in such a thin magnetic layer, taking the low damping constant (α = 0.0027) of the CoFeB films grown on the amorphous FeZr layer and the estimated large group velocity in the CoFeB films into account.

Original language	English
Pages (from-to)	906-910
Number of pages	5
Journal	Journal of the Korean Physical Society
Volume	67
Issue number	5
DOIs	https://doi.org/10.3938/jkps.67.906
State	Published - 26 Sep 2015

Bibliographical note

Publisher Copyright:
© 2015, The Korean Physical Society.

Keywords

CoFeB
FeZr
MSSW
Magnetic anisotropy
Spin wave

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10.3938/jkps.67.906

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title = "Magnetostatic spin wave in a very thin CoFeB film grown on an amorphous FeZr buffer layer",

abstract = "The transmission of a magnetostatic spin wave in a very thin CoFeB film (2.3 nm) grown on an amorphous paramagnetic FeZr layer was demonstrated for the first time by using an antenna method with coplanar waveguides. The attenuation length, determined by using the difference in intensities due to a change in the distance between the antennas, was estimated to be 0.7 µm. We discuss why we are able to observe spin-wave propagation in such a thin magnetic layer, taking the low damping constant (α = 0.0027) of the CoFeB films grown on the amorphous FeZr layer and the estimated large group velocity in the CoFeB films into account.",

keywords = "CoFeB, FeZr, MSSW, Magnetic anisotropy, Spin wave",

author = "Dongseok Kim and Kohei Nawaoka and Shinji Miwa and Park, \{Seung Young\} and Yoichi Shiota and You, \{Chun Yeol\} and Jaehun Cho and Lee, \{Byung Chan\} and Yoshishige Suzuki and Kungwon Rhie",

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year = "2015",

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day = "26",

doi = "10.3938/jkps.67.906",

language = "English",

volume = "67",

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TY - JOUR

T1 - Magnetostatic spin wave in a very thin CoFeB film grown on an amorphous FeZr buffer layer

AU - Kim, Dongseok

AU - Nawaoka, Kohei

AU - Miwa, Shinji

AU - Park, Seung Young

AU - Shiota, Yoichi

AU - You, Chun Yeol

AU - Cho, Jaehun

AU - Lee, Byung Chan

AU - Suzuki, Yoshishige

AU - Rhie, Kungwon

PY - 2015/9/26

Y1 - 2015/9/26

N2 - The transmission of a magnetostatic spin wave in a very thin CoFeB film (2.3 nm) grown on an amorphous paramagnetic FeZr layer was demonstrated for the first time by using an antenna method with coplanar waveguides. The attenuation length, determined by using the difference in intensities due to a change in the distance between the antennas, was estimated to be 0.7 µm. We discuss why we are able to observe spin-wave propagation in such a thin magnetic layer, taking the low damping constant (α = 0.0027) of the CoFeB films grown on the amorphous FeZr layer and the estimated large group velocity in the CoFeB films into account.

AB - The transmission of a magnetostatic spin wave in a very thin CoFeB film (2.3 nm) grown on an amorphous paramagnetic FeZr layer was demonstrated for the first time by using an antenna method with coplanar waveguides. The attenuation length, determined by using the difference in intensities due to a change in the distance between the antennas, was estimated to be 0.7 µm. We discuss why we are able to observe spin-wave propagation in such a thin magnetic layer, taking the low damping constant (α = 0.0027) of the CoFeB films grown on the amorphous FeZr layer and the estimated large group velocity in the CoFeB films into account.

KW - CoFeB

KW - FeZr

KW - MSSW

KW - Magnetic anisotropy

KW - Spin wave

UR - https://www.scopus.com/pages/publications/84942317034

U2 - 10.3938/jkps.67.906

DO - 10.3938/jkps.67.906

M3 - Article

AN - SCOPUS:84942317034

SN - 0374-4884

VL - 67

SP - 906

EP - 910

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - 5

ER -

Magnetostatic spin wave in a very thin CoFeB film grown on an amorphous FeZr buffer layer

Abstract

Bibliographical note

Keywords

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