Magnetic recording medium and magnetic recording method for digital
image signal
    1.
    发明授权
    Magnetic recording medium and magnetic recording method for digital image signal 失效
    用于数字图像信号的磁记录介质和磁记录方法

    公开(公告)号:US5401572A

    公开(公告)日:1995-03-28

    申请号:US902590

    申请日:1992-06-22

    摘要: The coefficient k.sub.1 of linear expansion in a temperature range from 50.degree. to 300.degree. C. of a non-magnetic support member of a recording medium, before a Co-Cr alloy film is formed thereon, is less than 0 mm/mm .degree.C., and the coefficient k.sub.2 of linear expansion in a temperature range from 50.degree. to 300.degree. C. of that support member after the Co-Cr alloy film is formed is less than 0.3.times.10.sup.-5 mm/mm .degree.C. The alloy film also includes carbon in the magnetic layer, and a protective film comprised of carbon is further formed on the magnetic layer. The recording medium is particularly adapted for perpendicular magnetic recording.

    摘要翻译: 在其上形成Co-Cr合金膜之前,在记录介质的非磁性支撑构件的50℃至300℃的温度范围内的线性膨胀系数k1小于0mm / mm 2 在形成Co-Cr合金膜之后,该支撑构件在50〜300℃的温度范围内的线膨胀系数k2小于0.3×10 -5 mm / mm 3。合金膜 还包括磁性层中的碳,并且在磁性层上进一步形成由碳构成的保护膜。 记录介质特别适用于垂直磁记录。

    Method of manufacturing data recording medium made of ordered alloy thin
film
    2.
    发明授权
    Method of manufacturing data recording medium made of ordered alloy thin film 有权
    制造有序合金薄膜的数据记录介质的制造方法

    公开(公告)号:US6068739A

    公开(公告)日:2000-05-30

    申请号:US328254

    申请日:1999-06-09

    摘要: A method of manufacturing a data recording medium for recording and reproducing data by use of a magnetic field or light and formed of an ordered alloy thin film comprising the steps of forming at least one underlayer principally containing an element or a compound selected from the group consisting of Cr, Pt, Pd, Au, Fe, Ni, MgO, NiO and controlled in such a way that a crystal plane having a crystal lattice face of a Miller index (100) is in parallel to a substrate, and forming an ordered alloy layer with L1.sub.0 crystal structure by sputter deposition within the range satisfying Equation 1: P.times.D>3000, where P is Ar sputter-gas pressure (Pa) and D is a target-substrate distance (mm), is disclosed. When a recording medium is formed of an ordered alloy thin film by using a glass substrate for a hard disk for industrial use, according to the method of the present invention, formation of an ordered phase required for exhibiting large magnetocrystalline anisotropy is accelerated at a low temperature allowing usage of the glass substrate, so that the recording medium is improved in thermal stability.

    摘要翻译: 一种制造数据记录介质的方法,用于通过使用磁场或光记录和再现由有序合金薄膜形成的数据的数据记录介质,该方法包括以下步骤:形成至少一个主要包含元素或选自以下的化合物的底层: 的Cr,Pt,Pd,Au,Fe,Ni,MgO,NiO,并且使得具有米勒指数(100)的晶格面的晶面与基板平行,并且形成有序合金 通过溅射沉积在满足公式1的范围内的L10晶体结构的层:PxD> 3000,其中P是Ar溅射气体压力(Pa),D是目标衬底距离(mm))。 当通过使用用于工业用硬盘的玻璃基板由有序合金薄膜形成记录介质时,根据本发明的方法,显示出大的磁晶各向异性所需的有序相的形成被加速到低 允许使用玻璃基板的温度,使得记录介质的热稳定性得到改善。

    Magnetic recording medium
    3.
    发明授权

    公开(公告)号:US06599646B2

    公开(公告)日:2003-07-29

    申请号:US09952786

    申请日:2001-09-13

    IPC分类号: G11B566

    CPC分类号: G11B5/667 G11B5/65 Y10S428/90

    摘要: An information recording layer consisting of a composite of an ordered alloy of L10 crystal structure selected from a group A, and MgO is used for a perpendicular magnetic recording medium. The group A includes an FePt ordered alloy, a CoPt ordered alloy, an FePd ordered alloy and an alloy thereof. This information recording layer has a very small magnetic domain structure and allows high density recording as seen from a signal output spectrum showing a result of a recording and reproducing evaluation of a magnetic recording medium in one example. The information recording layer can be formed at lower film formation temperature than a temperature of a composite thin film of an ordered alloy of L10 crystal structure according to a conventional technique.

    Vehicle navigation system and method
    4.
    发明授权
    Vehicle navigation system and method 有权
    车载导航系统及方法

    公开(公告)号:US06351708B1

    公开(公告)日:2002-02-26

    申请号:US09482094

    申请日:2000-01-13

    IPC分类号: G01C2100

    CPC分类号: G01C21/26 G06Q30/0284

    摘要: A vehicle navigation system and method in the present invention comprises a navigation apparatus transmitting a current position of a vehicle and a target destination of the vehicle, and a base station receiving the current position and the target destination, searching a route information from the current position to the target destination, and transmitting the route information to the navigation apparatus. The base station includes an information storage section storing added information with regard to road features, a route searching section searching the added route information from the information storage section, a transmitting section transmitting the route information to the navigation apparatus and then transmitting the added information to the navigation apparatus. The navigation apparatus displays the route information and the added route information each of which is transmitted from the base station.

    摘要翻译: 本发明的车辆导航系统和方法包括:发送车辆的当前位置和车辆的目标目的地的导航装置,以及接收当前位置和目标目的地的基站,从当前位置搜索路线信息 并且将路线信息发送到导航装置。 基站包括存储有关道路特征的附加信息的信息存储部,从信息存储部追加的路径信息的路径检索部,向导航装置发送路线信息,然后发送添加的信息的发送部 导航装置。 导航装置显示从基站发送的路由信息​​和添加的路由信息​​。

    Vacuum evaporation method for zinc sulfide
    5.
    发明授权
    Vacuum evaporation method for zinc sulfide 失效
    硫化锌真空蒸发法

    公开(公告)号:US4976988A

    公开(公告)日:1990-12-11

    申请号:US511970

    申请日:1990-04-17

    申请人: Naoki Honda

    发明人: Naoki Honda

    CPC分类号: C23C14/0629

    摘要: In a vacuum evaporation method for depositing a thin film on a substrate by heating a sublimable source material under vacuum to vaporize it, the source material is subjectd to vaporization in an unsintered state. Electron-beam heating may be employed. The primary advantage of avoiding precedent sintering of the source material is great reduction in scattering of fine particles of the source material in the vacuum chamber. Consequently the deposited film has an even and smooth surface. A representative of the sublimable source material is a II-VI compound semiconductor such as ZnS used as the host material of an electroluminescent phosphor. Thin-film electroluminsecent devices produced by using the vacuum evaporation method according to the invention possess improved reliability.

    Magnetic Recording Medium
    6.
    发明申请
    Magnetic Recording Medium 审中-公开
    磁记录介质

    公开(公告)号:US20070243420A1

    公开(公告)日:2007-10-18

    申请号:US11576348

    申请日:2005-10-04

    IPC分类号: G11B5/706

    CPC分类号: H01F10/16 G11B5/656 G11B5/851

    摘要: A magnetic recording medium has a recording layer formed of a magnetic material represented by the following general formula: [(Co1-mPtm)1-nCrn]100-x-yTixOy, where m and n are atomic ratios, m is 0.2 or more and 0.4 or less, n is 0 or more and 0.1 or less, x is 9 at. % or more and 13 at. % or less, and y/x is 1.8 or more and 2.3 or less.

    摘要翻译: 磁记录介质具有由以下通式表示的磁性材料形成的记录层:<?in-line-formula description =“In-line Formulas”end =“lead”?> [(Co&lt; m-1)n-1 n-1 n-1 n-1 n-1 n-1 n + 其中m和n为原子比,m为0.2以上,m为0以上, 0.4以下,n为0以上且0.1以下,x为9at。 %以上,13点。 %以下,y / x为1.8以上且2.3以下。

    High density information recording medium, and manufacturing method of the same medium
    7.
    发明授权
    High density information recording medium, and manufacturing method of the same medium 有权
    高密度信息记录介质,以及相同介质的制造方法

    公开(公告)号:US06641934B1

    公开(公告)日:2003-11-04

    申请号:US09641811

    申请日:2000-08-17

    IPC分类号: G11B566

    摘要: To present an information recording medium for achieving high density information recording, in particular, a high signal output and a high resolution in magnetic recording, for example, an information recording medium sequentially forming a layer made of soft magnetic material, a layer made of nonmagnetic material, and an information recording layer of ordered alloy with L10 crystal structure selected from group A is manufactured in a specified manufacturing method. Herein the group A is defined to include FePt ordered alloy, CoPt ordered alloy, FePd ordered alloy, and their alloy.

    摘要翻译: 为了呈现用于实现高密度信息记录的信息记录介质,特别是磁记录中的高信号输出和高分辨率,例如顺序地形成由软磁性材料制成的层的信息记录介质,由非磁性材料制成的层 材料和具有选自A组的L10晶体结构的有序合金的信息记录层以特定的制造方法制造。 在这里,A组被定义为包括FePt有序合金,CoPt有序合金,FePd有序合金及其合金。

    Thin film magnetic recording medium
    8.
    发明授权
    Thin film magnetic recording medium 失效
    薄膜磁记录介质

    公开(公告)号:US5759682A

    公开(公告)日:1998-06-02

    申请号:US613042

    申请日:1996-03-08

    摘要: A thin film magnetic recording medium comprising, a substrate, a crystal orientation enhancement underlayer of hcp structure formed on the substrate, a perpendicular orientation dispersion angle of c-axis thereof being not more than 10 degrees, and a cobalt-chromium-based magnetic layer formed on the underlayer, the magnetic layer having a thickness of 100 nm or less and containing 1 to 8 at % of niobium.

    摘要翻译: 一种薄膜磁记录介质,其特征在于,包括:基板,形成在所述基板上的hcp结构的晶体取向增强底层,c轴的垂直取向分散角为10度以下,钴 - 铬系磁性层 形成在底层上,磁性层的厚度为100nm以下,含有1〜8at%的铌。

    Method of designing patterned magnetic recording medium and patterned magnetic recording medium
    9.
    发明授权
    Method of designing patterned magnetic recording medium and patterned magnetic recording medium 有权
    设计图案化磁记录介质和图案化磁记录介质的方法

    公开(公告)号:US07339764B2

    公开(公告)日:2008-03-04

    申请号:US11689851

    申请日:2007-03-22

    IPC分类号: G11B5/74

    CPC分类号: G11B5/855

    摘要: A method of designing a patterned magnetic recording medium including a magnetic film with perpendicular magnetic anisotropy which is patterned into dots form includes steps of setting values to dot pattern periods Px and Py, a thickness “t”, a thermal stability factor Kn, a minimum inter-dot spacing S0, and a maximum recording field Hm, setting an initial value of a saturation magnetization Ms, finding a nucleation field for magnetization reversal Hn and estimating a coercivity Hc and a saturation field Hs, and repeating the steps given above so as to make the saturation field Hs lower than the maximum recording field Hm, thereby determining the magnetic properties Ms, Hn and Hc satisfying a desired condition.

    摘要翻译: 设计图案化磁记录介质的方法,其包括具有垂直磁各向异性的磁膜,其被图案化为点形,包括将值设置为点图案周期P&lt; x&gt;和P&gt; Y >,厚度“t”,热稳定性因子K N n N,最小间隙间隔S 0> 0,最大记录场H“ SUB>,设置饱和磁化强度M S s的初始值,找到用于磁化反转H n n N的成核磁场,并估计矫顽磁力H < 和饱和场H S S,并且重复上述步骤以使得比最大记录场H SUB的饱和场H S ,从而确定满足期望条件的磁性质M H,H N n和H C c。

    METHOD OF DESIGNING PATTERNED MAGNETIC RECORDING MEDIUM AND PATTERNED MAGNETIC RECORDING MEDIUM
    10.
    发明申请
    METHOD OF DESIGNING PATTERNED MAGNETIC RECORDING MEDIUM AND PATTERNED MAGNETIC RECORDING MEDIUM 有权
    设计图形磁记录介质和图形磁记录介质的方法

    公开(公告)号:US20070159721A1

    公开(公告)日:2007-07-12

    申请号:US11689851

    申请日:2007-03-22

    IPC分类号: G11B5/74

    CPC分类号: G11B5/855

    摘要: A method of designing a patterned magnetic recording medium including a magnetic film with perpendicular magnetic anisotropy which is patterned into dots form includes steps of setting values to dot pattern periods Px and Py, a thickness “t”, a thermal stability factor Kn, a minimum inter-dot spacing S0, and a maximum recording field Hm, setting an initial value of a saturation magnetization Ms, finding a nucleation field for magnetization reversal Hn and estimating a coercivity Hc and a saturation field Hs, and repeating the steps given above so as to make the saturation field Hs lower than the maximum recording field Hm, thereby determining the magnetic properties is Ms. Hn and Hc satisfying a desired condition.

    摘要翻译: 设计图案化磁记录介质的方法,其包括具有垂直磁各向异性的磁膜,其被图案化为点形,包括将值设置为点图案周期P&lt; x&gt;和P&gt; Y >,厚度“t”,热稳定性因子K N n N,最小间隙间隔S 0> 0,最大记录场H“ SUB>,设置饱和磁化强度M S s的初始值,找到用于磁化反转H n n N的成核磁场,并估计矫顽磁力H < 和饱和场H S S,并且重复上述步骤以使得比最大记录场H SUB的饱和场H S ,从而确定磁特性为M S。 H&lt; N&gt;和H&lt; c&gt;满足期望条件。