Inhomogeneous magnetic properties characterized by simultaneous electrical and optical detection of spin-torque ferromagnetic resonance

被引：0

作者：

Shiota, Yoichi ^{[1
]}

Hisatomi, Ryusuke ^{[1
]}

Moriyama, Takahiro ^{[1
]}

Samardak, Alexander S. ^{[2
]}

Ono, Teruo ^{[1
,2
]}

机构：

[1] Kyoto Univ, Inst Chem Res, Uji, Kyoto 6110011, Japan

[2] Far Eastern Fed Univ, Inst High Technol & Adv Mat, Lab Spin Orbitron, Vladivostok 690950, Russia

来源：

APPLIED PHYSICS LETTERS | 2021年 / 119卷 / 19期

关键词：

ORBIT TORQUES;

D O I：

10.1063/5.0070012

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetic properties of the Pt/Py microstrip were investigated using the simultaneous electrical and optical detection of spin-torque ferromagnetic resonance. From the measured optical signal using the heterodyne-magneto-optical Kerr effect (MOKE), we found that the inhomogeneous broadening and Gilbert damping constant were modified along the transverse direction of the microstrip. In addition, a difference in the precession phase was also observed owing to the non-uniform out-of-plane microwave field. Our study shows that the ferromagnetic resonance measurement based on the heterodyne-MOKE technique is a powerful tool for characterizing the static and dynamic magnetic properties of magnetic thin films with sub-micrometer spatial resolution.</p>

引用

页数：5

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