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    Amorphous soft underlayers for perpendicular recording media
    1.
    发明授权
    Amorphous soft underlayers for perpendicular recording media 失效
    用于垂直记录介质的无定形软底层

    公开(公告)号：US07060376B1

    公开(公告)日：2006-06-13

    申请号：US10142155

    申请日：2002-05-10

    Applicant: Chung-Hee Chang ,  Rajiv Y. Ranjan

    Inventor： Chung-Hee Chang ,  Rajiv Y. Ranjan

    IPC: G11B5/66 ,  G11B5/70

    CPC classification number: G11B5/667 ,  G11B5/82 ,  G11B2005/0029

    Abstract: A perpendicular magnetic recording medium having a substrate, an amorphous soft underlayer and a magnetic layer for perpendicular recording has reduced DC noise and surface roughness, which reduces the head-to-media spacing and the head-to-amorphous soft underlayer spacing.

    Abstract translation: 具有基板，非晶软底层和用于垂直记录的磁性层的垂直磁记录介质降低了DC噪声和表面粗糙度，从而降低了头对媒体间距和头对非软的软下层间距。

    Magnetic anisotropy of soft-underlayer induced by magnetron field
    3.
    发明授权
    Magnetic anisotropy of soft-underlayer induced by magnetron field 失效
    由磁控管场引起的软底层的磁各向异性

    公开(公告)号：US06914749B2

    公开(公告)日：2005-07-05

    申请号：US09873263

    申请日：2001-06-05

    Applicant: Chung-Hee Chang ,  Rajiv Y. Ranjan

    Inventor： Chung-Hee Chang ,  Rajiv Y. Ranjan

    IPC: G11B5/73 ,  G11B5/851 ,  G11B5/82

    CPC classification number: G11B5/667 ,  G11B5/851

    Abstract: A perpendicular magnetic recording medium having a substrate and a magnetic underlayer on the substrate, the magnetic underlayer having an easy axis of magnetization substantially directed in a radial or transverse direction, and a process for manufacturing the perpendicular magnetic recording medium are disclosed.

    Abstract translation: 公开了一种在基板上具有基板和磁性底层的垂直磁记录介质，磁性底层具有基本上沿径向或横向方向的易磁化磁化轴，以及用于制造垂直磁记录介质的工艺。

    Apparatus and Method for Treating Organic Waste
    5.
    发明申请
    Apparatus and Method for Treating Organic Waste 审中-公开
    用于处理有机废物的设备和方法

    公开(公告)号：US20130295625A1

    公开(公告)日：2013-11-07

    申请号：US13879879

    申请日：2011-11-30

    Applicant: Chung-Hee Chang ,  Young-O Kim ,  Duk-Woo Jun

    Inventor： Chung-Hee Chang ,  Young-O Kim ,  Duk-Woo Jun

    IPC: C12M1/107

    CPC classification number: C12M21/04 ,  C02F3/286 ,  C02F11/04 ,  C12M23/58 ,  C12M29/06 ,  C12M29/18 ,  Y02E50/343

    Abstract: The present invention relates to an apparatus for treating organic waste including: a first circulation line having a first circulation pump connected thereon so as to supply a portion of the organic waste being acid fermented in an acid fermenter to a methane fermenter; a second circulation line having a second circulation pump connected thereon so as to supply a portion of anaerobic digestive fluid methane fermented in the methane fermenter to the acid fermenter; and vortex generating means having a plurality of first, second and third nozzles disposed in the methane fermenter so as to allow the anaerobic digestive fluid in the methane fermenter to be agitated by vortices generated thereof.

    Abstract translation: 本发明涉及一种处理有机废弃物的设备，包括：第一循环管线，其上连接有第一循环泵，以将在酸发酵罐中酸发酵的有机废物的一部分供应给甲烷发酵罐; 连接有第二循环泵的第二循环管线，以将在甲烷发酵罐中发酵的一部分厌氧消化液甲烷供应到酸发酵罐; 以及具有设置在甲烷发酵罐中的多个第一，第二和第三喷嘴的涡流产生装置，以便允许甲烷发酵罐中的厌氧消化液体被其产生的涡流搅动。

    PERPENDICULAR MEDIA WITH REDUCED SIDE TRACK ERASURE
    6.
    发明申请
    PERPENDICULAR MEDIA WITH REDUCED SIDE TRACK ERASURE 有权
    具有减少侧面跟踪的PERPENDICULAR MEDIA

    公开(公告)号：US20100177439A1

    公开(公告)日：2010-07-15

    申请号：US12353229

    申请日：2009-01-13

    Applicant: Kaizhong Gao ,  Qixu Chen ,  Chung-Hee Chang ,  Thomas Patrick Nolan

    Inventor： Kaizhong Gao ,  Qixu Chen ,  Chung-Hee Chang ,  Thomas Patrick Nolan

    IPC: G11B5/82

    CPC classification number: G11B5/82 ,  G11B5/667

    Abstract: A media for perpendicular recording and a method of creating the media is provided. The media includes a hard recording layer and a soft underlayer (SUL). The SUL is composed of at least two anti-ferromagnetically coupled (AFC) sub-underlayers. The sub-underlayers respond to a magnetic field established during dynamic reversal with respective magnetic fields. The sub-underlayers are formed and disposed to differ in one or more magnetic moment, anisotropy, and thickness, so that their respective magnetic fields constructively interfere in one or more points in the hard recording layer, thereby reducing a total SUL magnetic field response to the dynamic reversal field approximately to zero at one or more points in the hard recording layer, which reduces side track erasure.

    Abstract translation: 提供了用于垂直记录的介质和创建介质的方法。 介质包括硬记录层和软底层（SUL）。 SUL由至少两个反铁磁耦​​合（AFC）子底层组成。 副底层响应于用相应的磁场在动态反转期间建立的磁场。 亚底层被形成和设置为在一个或多个磁矩，各向异性和厚度上不同，使得它们各自的磁场建构性地干扰硬记录层中的一个或多个点，从而减少总SUL磁场响应 在硬记录层中的一个或多个点处的动态反转场大致为零，这减少了侧轨道擦除。

    Texture-induced magnetic anisotropy of soft underlayers for perpendicular recording media
    8.
    发明授权
    Texture-induced magnetic anisotropy of soft underlayers for perpendicular recording media 失效
    用于垂直记录介质的软底层的纹理感应磁各向异性

    公开(公告)号：US06667118B1

    公开(公告)日：2003-12-23

    申请号：US09911738

    申请日：2001-07-25

    Applicant: Chung-Hee Chang ,  Rajiv Yadav Ranjan

    Inventor： Chung-Hee Chang ,  Rajiv Yadav Ranjan

    IPC: G11B566

    CPC classification number: G11B5/667 ,  G11B5/656 ,  G11B5/7315 ,  G11B5/8404 ,  Y10S428/90 ,  Y10T428/24975 ,  Y10T428/265

    Abstract: Perpendicular magnetic recording media having no, or substantially reduced, Barkhausen noise are manufactured by a method comprising steps of: (a) providing a non-magnetic substrate having a surface; (b) providing the surface of the substrate with a unidirectional texture pattern; (c) forming an underlayer of a soft magnetic material over the unidirectional texture pattern, the layer of soft magnetic material having positive magnetostriction and uniaxial magnetic anisotropy and including a multiplicity of magnetic domains; and (d) forming a magnetic recording layer of a hard magnetic material over the underlayer; wherein the uniaxial magnetic anisotropy of the underlayer of soft magnetic material is sufficiently large to orient the magnetic domains thereof along the axis of the uniaxial magnetic anisotropy and thereby restrict domain wall formation and/or movement, whereby generation of Barkhausen noise in the soft underlayer is suppressed.

    Abstract translation: 通过包括以下步骤的方法制造没有或基本上减少的巴克豪森噪声的垂直磁记录介质：（a）提供具有表面的非磁性基板;（b）为基板的表面提供单向纹理图案; （c）在单向纹理图案上形成软磁材料的底层，所述软磁材料层具有正的磁致伸缩和单轴磁各向异性并且包括多个磁畴; 以及（d）在所述底层上形成硬磁性材料的磁记录层;其中，所述软磁性材料的底层的单轴磁各向异性足够大以使其沿着所述单轴磁各向异性轴的方向取向， 畴壁形成和/或移动，从而抑制软底层中的巴克豪森噪声的产生。

    Recording layer and multilayered soft underlayer
    9.
    发明授权
    Recording layer and multilayered soft underlayer 有权
    记录层和多层软底层

    公开(公告)号：US08338005B2

    公开(公告)日：2012-12-25

    申请号：US12353229

    申请日：2009-01-13

    Applicant: Kaizhong Gao ,  Qixu Chen ,  Chung-Hee Chang ,  Thomas Patrick Nolan

    Inventor： Kaizhong Gao ,  Qixu Chen ,  Chung-Hee Chang ,  Thomas Patrick Nolan

    IPC: G11B5/667

    CPC classification number: G11B5/82 ,  G11B5/667

    Abstract: A media for perpendicular recording and a method of creating the media is provided. The media includes a hard recording layer and a soft underlayer (SUL). The SUL is composed of at least two anti-ferromagnetically coupled (AFC) sub-underlayers. The sub-underlayers respond to a magnetic field established during dynamic reversal with respective magnetic fields. The sub-underlayers are formed and disposed to differ in one or more magnetic moment, anisotropy, and thickness, so that their respective magnetic fields constructively interfere in one or more points in the hard recording layer, thereby reducing a total SUL magnetic field response to the dynamic reversal field approximately to zero at one or more points in the hard recording layer, which reduces side track erasure.

    Abstract translation: 提供了用于垂直记录的介质和创建介质的方法。 介质包括硬记录层和软底层（SUL）。 SUL由至少两个反铁磁耦​​合（AFC）子底层组成。 副底层响应于用相应的磁场在动态反转期间建立的磁场。 亚底层被形成和设置为在一个或多个磁矩，各向异性和厚度上不同，使得它们各自的磁场在硬记录层中的一个或多个点上建构性地干扰，从而减少总SUL磁场响应 在硬记录层中的一个或多个点处的动态反转场大致为零，这减少了侧轨道擦除。

    Inter layers for perpendicular recording media
    10.
    发明授权
    Inter layers for perpendicular recording media 有权
    用于垂直记录介质的层间

    公开(公告)号：US07235314B2

    公开(公告)日：2007-06-26

    申请号：US10797111

    申请日：2004-03-11

    Applicant: Qixu Chen ,  Chung-Hee Chang ,  Li-Lien Lee ,  Samuel D. Harkness, IV

    Inventor： Qixu Chen ,  Chung-Hee Chang ,  Li-Lien Lee ,  Samuel D. Harkness, IV

    IPC: G11B5/66 ,  G11B5/70

    CPC classification number: G11B5/732 ,  G11B5/65 ,  G11B5/667 ,  G11B5/7325

    Abstract: A magnetic recording medium, the order of layers in which is the substrate, the soft underlayer, the seedlayer, the 1st RuCrx-containing interlayer, the 2nd RuCrx-containing interlayer and the magnetic recording layer with preferably a oxides or nitrides-containing magnetic layer comprising grains, is disclosed. High-chromium ruthenium-chromium alloy used as inter layers significantly enhances coercivity and SMNR preferably due to the improved lattice match between RuCr inter layers and CoPt-based magnetic recording layers, and the surface energy of RuCr layers contributes to the performance improvement with the high-chromium addition into Ru inter layers.

    Abstract translation: 磁记录介质，层的顺序为衬底，软底层，种子层，含有CrCrNi x的中间层，2层， 并且具有优选含有包含晶粒的含氧化物或含氮化物的磁性层的磁记录层被公开。 用作层间的高铬钌 - 铬合金显着提高了矫顽力和SMNR，这主要是由于RuCr层间和CoPt基磁记录层之间的晶格匹配得到改善，RuCr层的表面能有助于提高性能 - 铬添加到Ru层间。

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