Development of high efficiency oscillators and detectors using nano-spin superstructures

使用纳米自旋上部结构开发高效振荡器和探测器

• 批准号: 23360004
• 负责人: MIZUGUCHI MASAKI
• 金额: $ 13.4万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23360004/
• 关键词: 磁性; スピントロニクス; 高周波; 発振; 検波

This research aimed to develop ultimate spin oscillators and detectors with high Q-values and high efficiency. To realize the purpose, nano-scaled spin-superstructures including ferromagnetic nano-dot arrays were fabricated. The influence of the ac spin current injection on spin torque oscillation has been also investigated within the framework of macro-spin model. Moreover, oscillation spectra were measured for actual nano-scaled GMR devices with large magnetoresistance to develop novel oscillation devices.

本研究旨在研制高Q值、高效率的极限自旋振荡器和探测器。为了实现这一目的，制备了包括铁磁纳米点阵列在内的纳米尺度自旋超结构。在宏观自旋模型的框架下研究了交流自旋电流注入对自旋矩振荡的影响。此外，振荡光谱测量实际的纳米尺度的巨磁阻大磁电阻器件开发新的振荡器件。

项目成果

強磁性金属ナノ粒子の磁気光学効果の評価

铁磁性金属纳米颗粒的磁光效应评价

• 作者: K. Uehara;K. Tazawa;and H. Shimizu;貝原輝則，水口将輝，高梨弘毅，清水大雅
• 通讯作者: 貝原輝則，水口将輝，高梨弘毅，清水大雅

Simple, Analysis for Frequency Enhancement in Spin Transfer Oscillation

自旋转移振荡中频率增强的简单分析

• 发表时间: 2012
• 作者: Chiharu Mitsumata;Satoshi Tomita;Masaki Mizuguchi;Takeshi Seki
• 通讯作者: Takeshi Seki

Frequency control of spin torque oscillation in magnetic metamaterials for microwave generator

微波发生器磁性超材料自旋矩振荡的频率控制

• 发表时间: 2012
• 作者: 児玉俊之;冨田知志;細糸信好;柳久雄;Chiharu Mitsumata and Satoshi Tomita
• 通讯作者: Chiharu Mitsumata and Satoshi Tomita

Magneto-Optical Properties and Size Effect of Ferromagnetic Metal Nanoparticles

• DOI: 10.7567/jjap.52.073003
• 发表时间: 2013-07
• 期刊: Japanese Journal of Applied Physics
• 影响因子: 1.5
• 作者: T. Kaihara;M. Mizuguchi;K. Takanashi;H. Shimizu

Simple Analysis for Frequency Increase in Spin Torque Oscillation

自旋力矩振荡频率增加的简单分析

• DOI: 10.1109/tmag.2012.2201700
• 发表时间: 2013
• 期刊: IEEE Transactions on Magnetism
• 作者: C.Mitsumata;S.Tomita;T.Seki;and M.Mizuguchi
• 通讯作者: and M.Mizuguchi