Dynamo magnetic domain analysis by nano-scale resolution MFM for high-density magnetic recording media

通过纳米级分辨率 MFM 对高密度磁记录介质进行动态磁域分析

基本信息

项目摘要

To develop ultra-high density magnetic recording media more than 1Tbit/inch^2 the reduction of media noise, which was occurred by the spatial and temporal fluctuation of media magnetization is important problem. Therefore the dynamic analysis of magnetic domain structure with high spatial resolution will be needed. In the present study, the research was carried out by using in-situ magnetic force microscope (MFM) in strong magnetic fields for the following purpose.(1)the development of MFM system with lateral resolution less than 5 nm(2)the development of dynamic analysis of magnetic domain structure using MFM(3)application of to high density magnetic recording mediaThe following results are obtained.1)High coercivity MFM tips with 10nm resolution (Hc>10kOe) were fabricated by using L1_0 ordered FePt alloy. The design of high-resolution tips with less than 5nm resolution were clarified by calculating the transfer function of the tips with various shape. Cylindrical tips with an spheroidal tip-end having an ellipticity of〜tan70°was found to be better candidates of high resolution MFM tips. The fabrication of these tips is in progress.2)In-situ dynamic MFM measurements in strong magnetic field were developed and applied to various high-density magnetic recording media, such as synthetic fern-magnetic media, patterned media. The nano-scale Hc distribution in the media was revealed.
为了开发超过1 Tbit/in^2的超高密度磁记录介质,降低由介质磁化强度的空间和时间波动引起的介质噪声是重要的问题。因此,需要对磁畴结构进行高空间分辨率的动态分析。本研究采用原位磁力显微镜(MFM)在强磁场中进行研究。(1)横向分辨率小于5 nm的MFM系统的研制(2)磁畴结构动态分析的研制(3)MFM在高密度磁记录介质中的应用取得了以下结果:1)用L1_0有序FePt合金制备了高矫顽力、分辨率为10 nm(Hc> 10 kOe)的MFM针尖。通过计算不同形状针尖的传递函数,阐明了分辨率小于5 nm的高分辨率针尖的设计。具有椭圆率为70 °的球形尖端的圆柱形尖端被发现是高分辨率MFM尖端的更好候选者。2)发展了强磁场下的原位动态MFM测量技术,并将其应用于各种高密度磁记录介质,如合成蕨磁介质、图案化介质等。揭示了介质中Hc的纳米级分布。

项目成果

期刊论文数量(24)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
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H.Ito, T.Kusunoki, H.Saito, S.Ishio: "The study on the ordering mechanism in FePt thin films with rapidthermal annealing process"J.Magn.Magn.Mater.. (in Press). (2004)
H.Ito、T.Kusunoki、H.Saito、S.Ishio:“快速热退火过程中 FePt 薄膜有序机制的研究”J.Magn.Magn.Mater..(出版中)。
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H.Saito, S.Ishio, A.Bos, L.Abelmann, C.Lodder: "Simulation Study of High Resolution MFM Tips"Tech.Report of IEICE Japan. MR2003-5. 21-25 (2003)
H.Saito、S.Ishio、A.Bos、L.Abelmann、C.Lodder:“高分辨率 MFM 针尖的模拟研究”日本 IEICE 技术报告。
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H.Saito, K.Miyazaki, S.Ishio: "In Situ Magnetic Hysteresis Measurement of Magnetic Tips in Magnetic Force Microscope"J.Magn Magn.Mater.. 240. 73-75 (2002)
H.Saito、K.Miyazaki、S.Ishio:“磁力显微镜中磁尖的原位磁滞测量”J.Magn Magn.Mater.. 240. 73-75 (2002)
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S.Ishio, G.Q.Li, H.Takahoshi, H.Ito, H.Saito, T.Shima, K.Takanashi: "Domain structure movement in L1_0 FePt islands observed by in situ MFM"J.Magn.Magn.Mater.. (In press). (2004)
S.Ishio、G.Q.Li、H.Takahoshi、H.Ito、H.Saito、T.Shima、K.Takanashi:“原位 MFM 观察到的 L1_0 FePt 岛屿中的磁畴结构运动”J.Magn.Magn.Mater..
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S.Ishio, T.Yoshino, H.Saito, T.Suzuki, K.Ohuchi: "Giant magnetoresistive effect in L1_0 ordered FePt films"J.Magn Magn.Mater.. 239. 217-219 (2002)
S.Ishio、T.Yoshino、H.Saito、T.Suzuki、K.Ohuchi:“L1_0 有序 FePt 薄膜中的巨磁阻效应”J.Magn Magn.Mater.. 239. 217-219 (2002)
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SAITO Hitoshi其他文献

Permafrost degradation and water body change in the central Lena River basin, eastern Siberia
东西伯利亚勒拿河流域中部多年冻土退化和水体变化
<b>Influence of nitrous oxide on granule cell migration in the dentate gyrus of the neonatal </b><b>rat </b>
<b>一氧化二氮对新生大鼠齿状回颗粒细胞迁移的影响</b><b>大鼠</b>
  • DOI:
    10.2220/biomedres.39.39
  • 发表时间:
    2018
  • 期刊:
  • 影响因子:
    0
  • 作者:
    SAITO Hitoshi;KATO Rui;HASHIMOTO Toshikazu;UCHIDA Yosuke;HASE Tetsutaro;TSURUGA Kenkichi;TAKITA Koichi;MORIMOTO Yuji
  • 通讯作者:
    MORIMOTO Yuji

SAITO Hitoshi的其他文献

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{{ truncateString('SAITO Hitoshi', 18)}}的其他基金

Development of near-field magnetic force microscopy for measuring absolute value of magnetic field and its application to high-resolution magnetic imaging of high performance permanent magnets
测量磁场绝对值的近场磁力显微镜的研制及其在高性能永磁体高分辨率磁成像中的应用
  • 批准号:
    25600092
  • 财政年份:
    2013
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Effect of typhoon frequency on landslide magnitude-frequency and sediment yield in temperate-humid and tectonically active region
温带湿润构造活动区台风频率对滑坡震频及产沙量的影响
  • 批准号:
    25882037
  • 财政年份:
    2013
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Research Activity Start-up
High-resolution magnetic imaging of magnetic reversal for magnetic composite of nanoparticles by microwave assisted alternating magnetic force microscopy
微波辅助交变磁力显微镜对纳米粒子磁性复合材料磁反转的高分辨率磁成像
  • 批准号:
    24360115
  • 财政年份:
    2012
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Development of high-resolution Near field magnetic force microscopy which enables to detect the direction and amplitude of static magnetic field near sample surface
开发高分辨率近场磁力显微镜,能够检测样品表面附近静磁场的方向和振幅
  • 批准号:
    23656026
  • 财政年份:
    2011
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Development of vector magnetic field detectable magnetic force microscopy with high resolution and its application to high-density magnetic recording devices
高分辨率矢量磁场可检测磁力显微镜的研制及其在高密度磁记录器件中的应用
  • 批准号:
    21360141
  • 财政年份:
    2009
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Development of High Resolution Magnetic Force Microscopy with High Sensitivity and Low Noise and Its Application to Nano-scale Magnetic Imaging
高灵敏度、低噪声高分辨率磁力显微镜的研制及其在纳米级磁成像中的应用
  • 批准号:
    17360036
  • 财政年份:
    2005
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Cross-sectional magnetic domain analysis by three-dimensional magnetic charge distribution measurement in magnetic thin films
通过磁性薄膜中三维磁荷分布测量进行横截面磁畴分析
  • 批准号:
    12650048
  • 财政年份:
    2000
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Basic study on chemotherapy combined with gene transfection for head and neck cancer
化疗联合基因转染治疗头颈癌的基础研究
  • 批准号:
    10470354
  • 财政年份:
    1998
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B).
Basic study on chemoresistance and thermoresistance of head and neck cancer
头颈癌化疗耐药和耐热的基础研究
  • 批准号:
    07457397
  • 财政年份:
    1995
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
A study on chemosensitivity and enhanced efficacy with hyperthermia of head and neck cancer
头颈癌化疗敏感性及热疗增效研究
  • 批准号:
    02454396
  • 财政年份:
    1990
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)

相似海外基金

Mechanism Elucidation and Development of Control Technique of Vector Magnetic Domain Structure of of Motor Core Material under Arbitrary Stress
任意应力下电机铁芯材料矢量磁畴结构的机理阐明及控制技术发展
  • 批准号:
    17K06309
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    2017
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Magnetic field and magnetic domain structure imaging with spectroscopic probe for the development of magnetic material of electric car motors
利用光谱探针进行磁场和磁畴结构成像,用于电动汽车电机磁性材料的开发
  • 批准号:
    15H02255
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    2015
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Magnetic Domain Structure and Anisotropic Thermal Conductivity
磁畴结构和各向异性导热率
  • 批准号:
    15340117
  • 财政年份:
    2003
  • 资助金额:
    $ 2.18万
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    Grant-in-Aid for Scientific Research (B)
The influence of magnetic domain structure on the electron transport in magnetic nanostructures
磁畴结构对磁性纳米结构电子输运的影响
  • 批准号:
    241990-2001
  • 财政年份:
    2002
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Postdoctoral Fellowships
The influence of magnetic domain structure on the electron transport in magnetic nanostructures
磁畴结构对磁性纳米结构电子输运的影响
  • 批准号:
    241990-2001
  • 财政年份:
    2001
  • 资助金额:
    $ 2.18万
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    Postdoctoral Fellowships
Study of Interface Structure & Magnetic Domain Structure in Magnetic Thin Layers
界面结构研究
  • 批准号:
    9419406
  • 财政年份:
    1995
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Standard Grant
Magnetic Domain Structure Calculations in Magnetites with Defects
带缺陷磁铁矿的磁畴结构计算
  • 批准号:
    8803371
  • 财政年份:
    1988
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    $ 2.18万
  • 项目类别:
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