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

被引：2

作者：

Kim, Dongseok ^{[1
]}

Nawaoka, Kohei ^{[2
]}

Miwa, Shinji ^{[2
]}

Park, Seung-Young ^{[3
]}

Shiota, Yoichi ^{[4
]}

You, Chun-Yeol ^{[5
]}

Cho, Jaehun ^{[5
]}

Lee, Byung-Chan ^{[5
]}

Suzuki, Yoshishige ^{[1
,2
,4
]}

Rhie, Kungwon ^{[1
,6
]}

机构：

[1] Korea Univ, Dept Display & Semicond Phys, Sejong 339700, South Korea

[2] Osaka Univ, Grad Sch Engn Sci, Osaka 5608531, Japan

[3] Korea Basic Sci Inst, Spin Engn Phys Team, Taejon 305806, South Korea

[4] Spintron Res Ctr, Natl Inst Adv Ind Sci & Technol, Ibaraki 3058568, Japan

[5] Inha Univ, Dept Phys, Inchon 402751, South Korea

[6] Kyushu Univ, Dept Phys, Fukuoka 8128581, Japan

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2015年 / 67卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

MSSW; Spin wave; CoFeB; FeZr; Magnetic anisotropy; TORQUE;

D O I：

10.3938/jkps.67.906

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 A mu m. We discuss why we are able to observe spin-wave propagation in such a thin magnetic layer, taking the low damping constant (alpha = 0.0027) of the CoFeB films grown on the amorphous FeZr layer and the estimated large group velocity in the CoFeB films into account.

引用

页码：906 / 910

页数：5

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