Laminated film and magnetic recording medium made therewith
    4.
    发明公开
    Laminated film and magnetic recording medium made therewith 失效
    层压薄膜,和由此制得的磁性记录介质。

    公开(公告)号:EP0088635A2

    公开(公告)日:1983-09-14

    申请号:EP83301292.5

    申请日:1983-03-09

    IPC分类号: H01F10/26 G11B5/64

    摘要: A laminated film for a super-high density magnetic recording medium, comprises (A) a layer 5 composed of a thermoplastic resin and (B) a layer 1 of a thermoplastic resin containing fine particles therein. In this laminated film, the outer surface of the layer (A) has a surface roughness of less than 0.005µ as expressed as the Ra value, and the outer surface of the layer (B) has a surface roughness of 0.005 to 0.040µ as expressed as the Ra value. The outer surface of the layer (B) has either (i) a plurality of depressions and a plurality of protrusions, which are formed thereon in a configuration such that at least one protrusion 3 exists within each depression 2 or at least one protrusion exists in the area where two or more depressions are contiguous to each other, or (ii) protrusions on a flat plane and a covering layer (C) composed of a lubricant, which is formed on the surface of the layer (B). This covering layer (C) may be formed on the surface having the above-mentioned depressions 2 and protrusions 3. The covering layer (C) is a continuous film layer or a discontinuous film layer formed of worm-like nodules. When a ferromagnetic metan thin film is formed on the surface of the layer (A) by vacuum evaporation and a protective film layer is formed on this thin film, there is obtained a vacuum-deposited video tape excellent in the running property and electromagnetic transformation performances. In this vacuum-deposited video tape, the transfer of the surface configuration due to the coarseness of the running surface can be prevented.

    Method for ultra-fast controlling of a magnetic cell and related devices
    5.
    发明公开
    Method for ultra-fast controlling of a magnetic cell and related devices 审中-公开
    Verfahren zur superschnellen Steuerung magnetischer Zelle sowiezugehörigeVorrichtungen

    公开(公告)号:EP1548702A1

    公开(公告)日:2005-06-29

    申请号:EP03447312.4

    申请日:2003-12-24

    发明人: Eyckmans, Wouter

    摘要: The present invention relates to a device and corresponding method for ultrafast controlling of the magnetization of a magnetic element. A device (100) includes a surface acoustic wave generating means (102), a transport layer (104), which is typically functionally and partially structurally comprised in said SAW generating means (102), and at least one ferromagnetic element (106). A surface acoustic wave is generated and propagates in a transport layer (104) which typically consists of a piezo-electric material. Thus, strain is induced in the transport layer (104) and in the ferromagnetic element (106) in contact with this transport layer (104). Due to magneto elastic coupling this generates an effective magnetic field in the ferromagnetic element (106). If the surface acoustic wave has a frequency substantially close to the ferromagnetic resonance (FMR) frequency ν FMR the ferromagnetic element (106) is absorbed well and the magnetisation state of the element can be controlled with this FMR frequency. The device can be used in an RF-magnetic resonator, a sensor and a camera. The corresponding method can be used for ultrafast reading-out and switching of magnetic components and in magnetic logic.

    摘要翻译: 本发明涉及一种用于超快速控制磁性元件的磁化的装置和相应的方法。 一种装置(100)包括表面声波发生装置(102),通常在功能上和部分结构上包括在所述SAW发生装置(102)中的传输层(104)和至少一个铁磁元件(106)。 生成表面声波并在通常由压电材料组成的传输层(104)中传播。 因此,在与该传输层(104)接触的传输层(104)和铁磁元件(106)中诱发应变。 由于磁弹性耦合,这在铁磁元件(106)中产生有效的磁场。 如果表面声波具有基本上接近铁磁共振(FMR)频率nu FMR的频率,则铁磁元件(106)被良好地吸收并且可以用该FMR频率来控制元件的磁化状态。 该器件可用于射频磁共振器,传感器和相机。 相应的方法可用于磁性部件和磁性逻辑的超快速读出和切换。

    Magnetic element and process for producing the same
    6.
    发明公开
    Magnetic element and process for producing the same 失效
    Magnetisches元素和dessen Herstellungsverfahren

    公开(公告)号:EP0793242A1

    公开(公告)日:1997-09-03

    申请号:EP97103256.0

    申请日:1997-02-27

    申请人: UNITIKA LTD.

    摘要: A magnetic element comprising a first thin film and a second thin film having a coercive force that is greater than the coercive force of the first thin film formed on a substrate. The magnetic element exhibits a continuous magnetic reversal under an applied alternating magnetic field having a magnitude that is smaller than the coercive force of the second thin film to cause said first thin film to undergo magnetic reversal. The magnetic element also exhibits a discontinuous sudden magnetic reversal under an applied alternating magnetic field having a magnitude that is greater than the coercive force of the second thin film. The configuration of the magnetic element has little effect on discontinuous magnetization response. Thus the magnetic element exhibits good magnetic characteristics even when formed in a small size.

    摘要翻译: 一种磁性元件,包括第一薄膜和具有大于形成在基底上的第一薄膜的矫顽力的矫顽力的第二薄膜。 磁性元件在施加的交变磁场下表现出持续的磁反转,该交变磁场的量值小于第二薄膜的矫顽力,以使所述第一薄膜经历磁反转。 磁性元件还在施加的交变磁场下表现出不连续的突然的磁反转,所述交变磁场的量值大于第二薄膜的矫顽力。 磁性元件的结构对不连续磁化响应几乎没有影响。 因此,即使形成小尺寸,磁性元件表现出良好的磁特性。

    Magnetic structure
    8.
    发明公开
    Magnetic structure 失效
    Magnetische Struktur。

    公开(公告)号:EP0510699A2

    公开(公告)日:1992-10-28

    申请号:EP92107074.4

    申请日:1992-04-24

    申请人: NEC CORPORATION

    摘要: A magnetic structure is provided with an alumina layer (26) formed between a ceramic substrate (22) and a soft magnetic layer (24). The alumina layer (26) has a formative energy of oxide lower than that of the soft magnetic layer (24) to protect diffusion of oxygen to the soft magnetic layer, when the soft magnetic layer is heated to be formed. Further, a bonding glass layer (36) is positioned between the ceramic substrate (30b) and the alumina layer (34), and another ceramic substrate (30a) is formed on the soft magnetic layer (32).

    摘要翻译: 磁性结构设置有形成在陶瓷基板和软磁性层之间的氧化铝层。 当软磁性层被加热形成时,氧化铝层具有低于软磁层的氧化层的形成能量,以保护氧扩散到软磁性层。 此外,在陶瓷基板和氧化铝层之间设置接合玻璃层,在软磁性层上形成另一陶瓷基板。

    Middle layer material for magnetic disc
    9.
    发明公开
    Middle layer material for magnetic disc 失效
    磁盘中间材料

    公开(公告)号:EP0227069A3

    公开(公告)日:1989-06-14

    申请号:EP86117767.3

    申请日:1986-12-19

    申请人: HITACHI, LTD.

    IPC分类号: G11B5/64 H01F10/26

    CPC分类号: G11B5/7305

    摘要: The magnetic film (103) for the magnetic disc is required to have an improved squareness ratio in order to achieve the faster access time than before. This requirement is met by providing a middle layer (102) between the disc substrate (101) and the magnetic thin film (103) according to the known technology. In this invention, the improvement in squareness ratio was accomplished by considering the arrangement of the material forming the middle layer (102). Namely, the middle layer (102) is formed by sputtering so that it has the diagonal micro arrangement. The middle layer (102) can be produced from a variety of materials to produce the desired effect.