磁性体金属Ｃｏ－窒化物多層薄膜の作製と軟磁気特性

磁性金属钴氮化物多层薄膜的制备及软磁性能

• 批准号: 15J03637
• 负责人: 曹 洋
• 金额: $ 1.09万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2015
• 资助国家: 日本
• 起止时间: 2015-04-24 至 2017-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15J03637/
• 关键词: granular nanostructure; high frequency response; magneto-dielectric; Co-HfN; Co-AlF; Nanogranular films; High-frequency device; Magneto-dielectricity

Through insertion of HfN interlayer into CoHfN structure, I realized the transition between soft magnetic properties and PMA, and attributed this transition to the suppression of columnar cluster and reduced interlayer interaction. This unique CoHfN/HfN multilayer granular structure is insightful to understand this growth-induced PMA films with tunable gigahertz frequency from 0.9 to 2 GHz by engineering the thicknesses of both granular and interlayer.The 2D Co/AlF granular films has been prepared. The structure of Co/AlF film consists of Co granule and AlF matrix. The existence of ferromagnetic clusters in Co(3nm)/AlF(5nm) films greatly improve the low-field sensitivity of TMD, displaying high 0.8% at H = 1 kOe,a value of 8-fold enhancement compared with the FeCo-MgF granular films.

通过在CoHfN结构中插入HfN夹层，实现了软磁性能和PMA之间的转变，并将这种转变归因于柱状团簇的抑制和层间相互作用的减少。这种独特的 CoHfN/HfN 多层颗粒结构对于通过设计颗粒和中间层的厚度来了解这种具有 0.9 至 2 GHz 可调千兆赫频率的生长诱导 PMA 薄膜具有深刻的洞察力。二维 Co/AlF 颗粒薄膜已制备完成。 Co/AlF薄膜的结构由Co颗粒和AlF基体组成。 Co(3nm)/AlF(5nm)薄膜中铁磁簇的存在极大地提高了TMD的低场灵敏度，在H = 1 kOe时表现出高达0.8%的灵敏度，与FeCo-MgF颗粒相比增强了8倍电影。

项目成果

Granule Content Dependence on Tunneling Magneto-Dielectric Responses in Co-MgF2 Nanogranular Films

Co-MgF2 纳米颗粒薄膜中颗粒含量对隧道磁电介质响应的依赖性

• 发表时间: 2017
• 作者: 曹 洋;梅津 輝;小林 伸聖;張 亦文;増本 博
• 通讯作者: 増本 博

Structure and Isotropic High-Frequency Response of Co-HfN Nanogranular Films

• DOI: 10.1109/tmag.2015.2438003
• 发表时间: 2015-06
• 期刊: IEEE Transactions on Magnetics
• 影响因子: 2.1
• 作者: Yang Cao;Yiwen Zhang;S. Ohnuma;N. Kobayashi;H. Masumoto

Structure and magneto-dielectric effects of Co/AlF granular film

Co/AlF颗粒薄膜的结构和磁介电效应

• 发表时间: 2016
• 作者: Yang Cao;Nobukiyo Kobayashi;Shigehiro Ohnuma;and Hiroshi Masumoto
• 通讯作者: and Hiroshi Masumoto

Tunneling-magneto-dielectric effect with high low-field sensitivity in Co/AlF granular multilayers

Co/AlF 颗粒多层膜中具有高低场灵敏度的隧道磁介电效应

• 发表时间: 2016
• 作者: Yang Cao;Nobukiyo Kobayashi;Yiwen Zhang;Shigehiro Ohnuma and Hiroshi Masumoto
• 通讯作者: Shigehiro Ohnuma and Hiroshi Masumoto

Control of the static and high-frequency magnetic properties in perpendicular anisotropic CoHfN granular films through insertion of HfN interlayers

通过插入 HfN 夹层控制垂直各向异性 CoHfN 颗粒薄膜的静态和高频磁性能

• 发表时间: 2017
• 期刊: Japanese Journal of Applied Physics
• 影响因子: 1.5
• 作者: Y. Cao;Y. Zhang;S. Ohnuma;N. Kobayashi;and H. Masumoto
• 通讯作者: and H. Masumoto