Study on the mechanism of high-frequency magnetization response in nano-magnets using a new proposed RF spin measurement technique

使用新提出的射频自旋测量技术研究纳米磁体高频磁化响应的机制

• 批准号: 23686047
• 负责人: ENDO YASUSHI
• 金额: $ 7.57万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (A)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-11-18 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23686047/
• 关键词: 微小磁性体; スピン; 高周波磁界応答; コプレーナ伝送線路; MFM用探針; 振幅変調; 磁気力顕微鏡用探針; 振幅変調方式; 高周波磁気力力顕微鏡; ＭＦＭ用探針; ＭＦＭ

This study reports the mechanism of high-frequency (HF) magnetization response in nano-magnet using our newly proposed RF spin measurement technique. As for our proposed technique, it is revealed that GHz-range magnetic field distribution on the coplanar waveguide (CPW) can be observed using a magnetic force microscope (MFM) tip. As for the mechanism of high-frequency magnetization response in nano-magnet, its basic data can be obtained using the ferromagnetic resonance measurement with the CPW. Additionally, several problemes are clarified as the HF magnetization response in nano-magnet is measured using our proposed techniques.Therefore, on the basis of these data, it is pointed out that HF magnetization response can be controlled by changing dot parameters or dot materials.

本研究报告的机制，高频（HF）磁化响应的纳米磁体使用我们新提出的RF自旋测量技术。至于我们提出的技术，它揭示了GHz范围内的磁场分布的共面波导（CPW）可以观察到使用磁力显微镜（MFM）尖。对于纳米磁体的高频磁化响应机理，可以通过共面波导的铁磁共振测量得到其基础数据。此外，还阐明了利用我们提出的技术测量纳米磁体中HF磁化响应时存在的几个问题，从而指出，在此基础上，可以通过改变点参数或点材料来控制HF磁化响应。

项目成果

Study on the spin-dynamics of Ni-Fe elliptical dot arrays based on the CPW–FMR measurements

基于CPW-FMR测量的Ni-Fe椭圆点阵自旋动力学研究

• 发表时间: 2013
• 作者: Yasushi Endo;Masahiro Yamaguchi
• 通讯作者: Masahiro Yamaguchi

Study on the spin-dynamics of Ni-Fe elliptical dot arrays based on CPW-FMR measurements

基于CPW-FMR测量的Ni-Fe椭圆点阵自旋动力学研究

• 发表时间: 2013
• 期刊: Proceedings of ISETS'13
• 作者: Yasushi Endo;Masahiro Yamaguchi
• 通讯作者: Masahiro Yamaguchi

Magnetization Dynamics of Ni-Fe Elliptical Dot Arrays Measured by the FMR Measurement with a CPW

通过 CPW 进行 FMR 测量来测量 Ni-Fe 椭圆点阵列的磁化动力学

• 发表时间: 2014
• 作者: Yasushi Endo;Masahiro Yamaguchi
• 通讯作者: Masahiro Yamaguchi

High-Frequency MFM

高频磁力显微镜

• 发表时间: 2014
• 作者: Yasushi Endo;Masahiro Yamaguchi
• 通讯作者: Masahiro Yamaguchi

Influence of Spin-Torque on Thermal Mag-Noise in a Tunneling Magnetore- sistive Read Head with a Low Resistance Area Product below 1.0Ω.μm^2

低阻面积积低于 1.0Ω.μm^2 的隧道磁阻读头中自旋扭矩对热磁噪声的影响

• 发表时间: 2013
• 作者: Y. Endo;P. Fan;A. Hotta;M. Yamaguchi
• 通讯作者: M. Yamaguchi