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    MAGNETIC TAPE DEVICE AND MAGNETIC REPRODUCING METHOD
    3.
    发明申请
    MAGNETIC TAPE DEVICE AND MAGNETIC REPRODUCING METHOD 审中-公开

    公开(公告)号：US20180182429A1

    公开(公告)日：2018-06-28

    申请号：US15854383

    申请日：2017-12-26

    Applicant: FUJIFILM Corporation

    Inventor： Norihito KASADA ,  Eiki OZAWA ,  Tetsuya KANEKO

    IPC: G11B15/46 ,  G11B5/39

    CPC classification number: G11B15/46 ,  G11B5/3909 ,  G11B5/70 ,  G11B5/706 ,  G11B5/73 ,  G11B5/78 ,  G11B5/842

    Abstract: The magnetic tape device includes: a magnetic tape; and a reproducing head, in which a magnetic tape transportation speed of the magnetic tape device is equal to or lower than 18 m/sec, the reproducing head is a magnetic head including a tunnel magnetoresistance effect type element as a reproducing element, the magnetic tape includes a non-magnetic support, and a magnetic layer including ferromagnetic powder and a binding agent on the non-magnetic support, the magnetic layer includes one or more components selected from the group consisting of fatty acid and fatty acid amide, and a C—H derived C concentration calculated from a C—H peak area ratio of C1s spectra obtained by X-ray photoelectron spectroscopic analysis performed on the surface of the magnetic layer at a photoelectron take-off angle of 10 degrees is 45 to 65 atom %.

    Magnetic tape device and head tracking servo method
    4.
    发明授权
    Magnetic tape device and head tracking servo method 有权

    公开(公告)号：US09978414B1

    公开(公告)日：2018-05-22

    申请号：US15854474

    申请日：2017-12-26

    Applicant: FUJIFILM Corporation

    Inventor： Tetsuya Kaneko ,  Norihito Kasada ,  Eiki Ozawa

    IPC: G11B5/706 ,  G11B5/39 ,  G11B5/68 ,  G11B5/84

    CPC classification number: G11B5/70678 ,  G11B5/3909 ,  G11B5/68 ,  G11B5/70 ,  G11B5/706 ,  G11B5/84

    Abstract: The magnetic tape device includes: a magnetic tape; and a servo head, in which a magnetic tape transportation speed of the magnetic tape device is equal to or lower than 18 m/sec, the servo head is a magnetic head including a tunnel magnetoresistance effect type element as a servo pattern reading element, the magnetic tape includes a non-magnetic support, and a magnetic layer including ferromagnetic hexagonal ferrite powder, non-magnetic powder, and a binding agent on the non-magnetic support, the magnetic layer includes a servo pattern, and a tilt cos θ of the ferromagnetic hexagonal ferrite powder with respect to a surface of the magnetic layer acquired by cross section observation performed by using a scanning transmission electron microscope is 0.85 to 0.95.

    Magnetic exchange coupled core-shell nanomagnets
    5.
    发明授权
    Magnetic exchange coupled core-shell nanomagnets 有权

    公开(公告)号：US09406418B2

    公开(公告)日：2016-08-02

    申请号：US14741217

    申请日：2015-06-16

    Applicant: Yang-Ki Hong ,  Seok Bae

    Inventor： Yang-Ki Hong ,  Seok Bae

    IPC: G01R33/383 ,  H01F1/03 ,  H01F3/00 ,  H01F1/00 ,  H01F1/06 ,  G11B5/706

    CPC classification number: H01F1/0302 ,  G11B5/706 ,  H01F1/0054 ,  H01F1/061 ,  H01F3/00

    Abstract: A permanent magnet is fabricated such that it has a magnetically hard core surrounded by a thin magnetically soft shell. The magnetically hard core provides a relatively high intrinsic coercivity (Hci), and the magnetically soft shell provides a relatively high magnetic flux density (B). Due to magnetic exchange coupling between the core and shell, a relatively high maximum energy product (BH)max is achievable over a wide temperature range, including temperatures above 150° C. Further, such effects can be achieved without using rare-earth metals or precious metals helping to keep the manufacturing costs of the magnet low. To allow sufficient exchange magnetic coupling between the core and shell, the width of the shell is less than about 40 nanometers, and the overall dimensions are controlled such that the width of the shell is less than two times the Bloch domain wall thickness of the core.

    Magnetic disk formed of nanotube arrays containing magnetic nanoparticles
    8.
    发明授权
    Magnetic disk formed of nanotube arrays containing magnetic nanoparticles 有权
    由包含磁性纳米颗粒的纳米管阵列形成的磁盘

    公开(公告)号：US08241767B2

    公开(公告)日：2012-08-14

    申请号：US12700742

    申请日：2010-02-05

    Applicant: Tyson York Winarski

    Inventor： Tyson York Winarski

    IPC: G11B5/65

    CPC classification number: G11B5/65 ,  B82Y10/00 ,  G11B5/54 ,  G11B5/706 ,  Y10S977/742 ,  Y10S977/773

    Abstract: A magnetic storage medium is formed of magnetic nanoparticles that are encapsulated within nanotubes (e.g., carbon nanotubes), which are arranged in a substrate to facilitate the reading and writing of information by a read/write head. The substrate may be flexible or rigid. Information is stored on the magnetic nanoparticles via the read/write head of a storage device. These magnetic nanoparticles are arranged into data tracks to store information through encapsulation within the carbon nanotubes. As carbon nanotubes are bendable, the carbon nanotubes may be arranged on flexible or rigid substrates, such as a polymer tape or disk for flexible media, or a glass substrate for rigid disk. A polymer may assist holding the nano-particle filled carbon-tubes to the substrate.

    Abstract translation: 磁性存储介质由包封在纳米管（例如碳纳米管）内的磁性纳米颗粒形成，其被布置在基板中以便于读/写头读取和写入信息。 衬底可以是柔性的或刚性的。 信息经由存储装置的读/写头存储在磁性纳米粒子上。 这些磁性纳米颗粒被布置成数据轨道，以通过在碳纳米管内的封装来存储信息。 由于碳纳米管是可弯曲的，碳纳米管可以布置在柔性或刚性基底上，例如用于柔性介质的聚合物带或盘，或用于刚性盘的玻璃基底。 聚合物可以有助于将纳米颗粒填充的碳管保持在基底上。

    Nanoparticle coated nanostructured surfaces for detection, catalysis and device applications
    10.
    发明申请
    Nanoparticle coated nanostructured surfaces for detection, catalysis and device applications 有权
    用于检测，催化和器件应用的纳米颗粒涂层纳米结构表面

    公开(公告)号：US20060141268A1

    公开(公告)日：2006-06-29

    申请号：US10542951

    申请日：2004-01-21

    Applicant: Ali Kalkan ,  Stephen Fonash

    Inventor： Ali Kalkan ,  Stephen Fonash

    IPC: B32B13/04

    CPC classification number: B01J35/10 ,  B01J35/006 ,  B82Y15/00 ,  B82Y20/00 ,  B82Y25/00 ,  B82Y30/00 ,  G11B5/706 ,  G11B7/241 ,  H01F1/0054 ,  Y10S977/707 ,  Y10S977/723 ,  Y10S977/764 ,  Y10S977/778 ,  Y10S977/784 ,  Y10T428/24926

    Abstract: A non-vacuum-based, non-collodial chemistry-based method of synthesizing metal nanoparticles and nanoparticle-nanostructured material composites obtained by that method. An embodiment of the method of this invention for fabricating a nanoparticle-nanostructured material composite and synthesizing nanoparticles includes preparing a nanostructured/nanotextured material, and, contacting the nanostructured/nanotextured material with a solution. Nanoparticles are synthesized on the nanostructured/nanotextured material as a result of the contact. The method of the present invention can be utilized to fabricate SPR and SERS substrates for sensing and detection. Additional systems based on this approach (e.g., surface plasmon resonance absorption and alloying sensors and nanocatalysts) are described.

    Abstract translation: 一种基于非真空的，基于非线性的基于化学的合成金属纳米颗粒和通过该方法获得的纳米颗粒 - 纳米结构材料复合材料的方法。 用于制造纳米颗粒 - 纳米结构材料复合材料和合成纳米颗粒的本发明方法的一个实施方案包括制备纳米结构/纳米纹理材料，以及使纳米结构/纳米纹理材料与溶液接触。 作为接触的结果，纳米颗粒在纳米结构/纳米纹理材料上合成。 本发明的方法可用于制造用于感测和检测的SPR和SERS衬底。 描述了基于该方法的附加系统（例如，表面等离子体共振吸收和合金化传感器和纳米催化剂）。

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