Preparation of self-organized nano-structured thin film for the application to spin-devices

自组织纳米结构薄膜的制备及其在自旋器件中的应用

• 批准号: 22246078
• 负责人: DOI Masaaki
• 金额: $ 30.7万
• 依托单位: Tohoku Gakuin University (2011-2012)Tohoku University (2010)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22246078/
• 关键词: 電子・磁気物性; スピンエレクトロニクス; エピタキシャル; 自己組織化; 磁気抵抗効果; ナノ接点; スピンダイナミクス; 人工格子; スピントルク; マイクロ波発振

The structural properties of the full epitaxial trilayer, AML[Fe/Co]n/Ag/AML[Fe/Co]n, on the Ag electrode have been confirmed by in situ reflection high-energy electron diffraction and transmission electron diffraction microscopy. A considerably large resistance-area product change and MR ratio (△RA > 3Ωμm2and MR ratio ＞5%) were confirmed even at thin AML[Fe/Co]n layer at room temperature (RT) in our spin-valve elements. The estimated values of βFand γF/N were 0.80 and 0.84±0.02, respectively. The intrinsic transport P of 0.60 was obtained for the AML epitaxial [Fe/Co]n superlattice by the point contact Andreev reflection (PCAR) method.The material design for Nano-contact MR device was obtained.

用原位反射高能电子衍射和透射电子衍射显微镜证实了全外延三层膜AML[Fe/Co]n/Ag/AML[Fe/Co]n在Ag电极上的结构性质。在我们的自旋阀元件中，即使在室温(RT)的薄AML[Fe/Co]n层中，也证实了相当大的电阻面积乘积变化和MR比(RA&gt；3Ωμm~2，MR比>5%)。βF和γF/N的估计值分别为0.80和0.84±0.02。利用点接触Andreev反射(PCAR)方法获得了AML外延[Fe/Co]n超晶格的本征输运P值为0.60，从而得到了纳米接触磁流变器件的材料设计。

项目成果

Coherent and High-powered Microwave Excitation in NCMR Spin-Torque Oscillator

NCMR 自旋扭矩振荡器中的相干高功率微波激励

• 发表时间: 2011
• 作者: 齋藤亜季子，加藤英樹，小林亮，佐藤泰史;垣花眞人;T. Nakamura
• 通讯作者: T. Nakamura

Response of Nano- Contact Magneto-resistive Spin Torque Oscillation to an Injected Microwave Current

纳米接触磁阻自旋扭矩振荡对注入微波电流的响应

• 发表时间: 2010
• 作者: 高口洋人;他6名;M. Al-Mahdawi
• 通讯作者: M. Al-Mahdawi

Frequency Modulation of a Nano-Oxide Layer-Based Spin-Torque Oscillator With FeCo Nanocontacts

基于纳米氧化物层的 FeCo 纳米触点自旋扭矩振荡器的频率调制

• 发表时间: 2011
• 期刊: IEEE TRANSACTIONS ON MAGNETICS
• 影响因子: 2.1
• 作者: Al-Mahdawi M;Doi M;Hashimoto S;Fuke NH;Iwasaki H;Sahashi M
• 通讯作者: Sahashi M

Enhancement of microwave oscillation under angled in-plane magnetic field in ferromagnetic nano-contact spin-valves

铁磁纳米接触旋转阀中倾斜面内磁场下微波振荡的增强

• DOI: 10.1063/1.3619835
• 发表时间: 2011
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: Suzuki H;Nakamura T;Endo H;Doi M;Tsukahara H;Imamura H;Fuke NH;Hashimoto S;Iwasaki H;Sahashi M
• 通讯作者: Sahashi M

Magnetization reversal behavior of FePt/MgO/FePt thin film

FePt/MgO/FePt薄膜的磁化反转行为

• 发表时间: 2012
• 作者: Hiroki Iwama;Shinji Matsumoto;Katsuya Sugawara;Kotaro Sato;Masaaki Doi and Toshiyuki Shima
• 通讯作者: Masaaki Doi and Toshiyuki Shima