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    MAGNETIC FLUX BARRIER
    1.
    发明申请
    MAGNETIC FLUX BARRIER 有权
    磁通障碍器

    公开(公告)号：US20120063032A1

    公开(公告)日：2012-03-15

    申请号：US12879791

    申请日：2010-09-10

    申请人： Eric Meloche ,  Bin Lu ,  Lixin Jia ,  Jianhua Xue ,  John David Westwood ,  Mark Anthony Gubbins ,  Alexandru Cazacu

    发明人： Eric Meloche ,  Bin Lu ,  Lixin Jia ,  Jianhua Xue ,  John David Westwood ,  Mark Anthony Gubbins ,  Alexandru Cazacu

    IPC分类号： G11B5/127

    CPC分类号： G11B5/11 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315

    摘要： Data storage systems having barriers that may reduce erasure flux and increase write-ability are provided. Data storage systems include a writing element. The writing element has a write pole with a flare region. A magnetic flux barrier is located along the write pole flare region. The magnetic flux barrier is illustratively made from an in-plane magnetically anisotropic material that has an easy plane of magnetization. In another embodiment, a data storage system includes a writing element having an air bearing surface and a shield at the air bearing surface. The shield has a magnetic permeability of approximately zero. The shield illustratively includes alternating layers of positive and negative permeabilities. The shield optionally includes a plurality of shields that may include top, bottom, and side shields.

    摘要翻译： 提供了具有可能减少擦除通量并增加写入能力的障碍的数据存储系统。 数据存储系统包括写入元件。 写入元件具有带闪光区域的写入极。 磁通势垒位于写磁极耀斑区域。 磁通势垒示意性地由具有易磁化平面的面内磁各向异性材料制成。 在另一个实施例中，数据存储系统包括具有空气轴承表面和在空气支承表面处的屏蔽的书写元件。 屏蔽具有大约零的磁导率。 屏蔽件示例性地包括正和负磁导率的交替层。 屏蔽件可选地包括可以包括顶部，底部和侧部屏蔽件的多个屏蔽件。

    Magnetic flux barrier
    2.
    发明授权
    Magnetic flux barrier 有权
    磁通屏障

    公开(公告)号：US08982507B2

    公开(公告)日：2015-03-17

    申请号：US12879791

    申请日：2010-09-10

    申请人： Eric Meloche ,  Bin Lu ,  Lixin Jia ,  Jianhua Xue ,  John David Westwood ,  Mark Anthony Gubbins ,  Alexandru Cazacy

    发明人： Eric Meloche ,  Bin Lu ,  Lixin Jia ,  Jianhua Xue ,  John David Westwood ,  Mark Anthony Gubbins ,  Alexandru Cazacy

    IPC分类号： G11B5/127 ,  G11B5/31

    CPC分类号： G11B5/11 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315

    摘要： Data storage systems having barriers that may reduce erasure flux and increase write-ability are provided. Data storage systems include a writing element. The writing element has a write pole with a flare region. A magnetic flux barrier is located along the write pole flare region. The magnetic flux barrier is illustratively made from an in-plane magnetically anisotropic material that has an easy plane of magnetization. In another embodiment, a data storage system includes a writing element having an air bearing surface and a shield at the air bearing surface. The shield has a magnetic permeability of approximately zero. The shield illustratively includes alternating layers of positive and negative permeabilities. The shield optionally includes a plurality of shields that may include top, bottom, and side shields.

    摘要翻译： 提供了具有可能减少擦除通量并增加写入能力的障碍的数据存储系统。 数据存储系统包括写入元件。 写入元件具有带闪光区域的写入极。 磁通势垒位于写磁极耀斑区域。 磁通势垒示意性地由具有易磁化平面的面内磁各向异性材料制成。 在另一个实施例中，数据存储系统包括具有空气轴承表面和在空气支承表面处的屏蔽的书写元件。 屏蔽具有大约零的磁导率。 屏蔽件示例性地包括正和负磁导率的交替层。 屏蔽件可选地包括可以包括顶部，底部和侧部屏蔽件的多个屏蔽件。

    Bilayer liftoff process for high moment laminate
    4.
    发明授权
    Bilayer liftoff process for high moment laminate 失效
    双层层压板剥离工艺

    公开(公告)号：US06495311B1

    公开(公告)日：2002-12-17

    申请号：US09528226

    申请日：2000-03-17

    申请人： Mahbub R. Khan ,  Jane Ellyn Nealis ,  Alfred Floyd Renaldo ,  John David Westwood

    发明人： Mahbub R. Khan ,  Jane Ellyn Nealis ,  Alfred Floyd Renaldo ,  John David Westwood

    IPC分类号： G03C556

    CPC分类号： G11B5/3153 ,  G11B5/00813 ,  G11B5/3116 ,  G11B5/3163 ,  Y10T428/1171 ,  Y10T428/1193

    摘要： The magnetic tape recording head of the present invention is formed with magnetic poles that are comprised of a laminated NiFeN/FeN structure. The method for fabricating the magnetic poles utilizes an additive photolithographic technique including a bilayer liftoff resist. In this fabrication method magnetic pole trenches are formed in the bilayer liftoff resist such that an undercut exists in the liftoff layer. Thereafter, the laminated NiFeN/FeN structure is sputter deposited into the trench, followed by the wet chemical removal of the bilayer resist.

    摘要翻译： 本发明的磁带记录头形成有由NiFeN / FeN层压体构成的磁极。 用于制造磁极的方法使用包括双层剥离抗蚀剂的附加光刻技术。 在该制造方法中，在双层剥离抗蚀剂中形成磁极沟槽，使得在剥离层中存在底切。 此后，将层压的NiFeN / FeN结构溅射沉积到沟槽中，随后湿化学除去双层抗蚀剂。

    Method of making P1 notched write head with minimum overmilled P1 and P2
    5.
    发明授权
    Method of making P1 notched write head with minimum overmilled P1 and P2 失效
    制造P1缺口写头的方法，最小超过P1和P2

    公开(公告)号：US6106679A

    公开(公告)日：2000-08-22

    申请号：US280482

    申请日：1999-03-30

    申请人： John David Westwood

    发明人： John David Westwood

    IPC分类号： G11B5/012 ,  G11B5/31 ,  G11B5/39 ,  C23C14/34 ,  C11B5/127 ,  C11B5/187

    CPC分类号： G11B5/3967 ,  G11B5/3116 ,  G11B5/3163 ,  G11B5/012 ,  Y10T29/49021 ,  Y10T29/49043 ,  Y10T29/49046

    摘要： A magnetic head is provided which has first and second notches in a first pole piece layer adjacent first and second corners at the base of a gap layer wherein the gap layer does not undercut a base of a second pole tip. Field regions of the first pole piece layer which extend from the first and second notches slope upwardly from the notches for protecting components below the first pole piece layer. In one aspect of the invention a method of defining the gap layer sputter deposition and ion milling steps are employed to form a protective layer on first and second side walls of the second pole tip so that unwanted portions of the gap layer can be removed without undercutting the gap layer below the base of the second pole tip. In another aspect of the invention a method of making the first and second notches by sputter deposition and etching are employed to define a protective layer with first and second openings where the first and second notches are to be formed following by ion milling which mills through the openings through the notches until the protective layer is consumed.

    摘要翻译： 提供磁头，其在第一极片层中具有第一和第二凹口，邻近第一和第二角落在间隙层的基部，其中间隙层不会削弱第二极尖的基部。 第一极片层的从第一和第二凹口延伸的场区域从凹口向上倾斜以保护在第一极片层下方的部件。 在本发明的一个方面，采用限定间隙层溅射沉积和离子铣削步骤的方法，以在第二极尖的第一和第二侧壁上形成保护层，使得间隙层的不希望的部分可以在不切割的情况下被去除 间隙层位于第二极尖的底部下方。 在本发明的另一方面，采用通过溅射沉积和蚀刻制造第一和第二凹口的方法来限定具有第一和第二开口的保护层，其中第一和第二凹口将通过离子铣削形成， 开口穿过凹口，直到保护层消耗。

    P1 notched write head with minimum overmilled p1 and p2
    6.
    发明授权
    P1 notched write head with minimum overmilled p1 and p2 失效
    P1缺口写头，最小超过p1和p2

    公开(公告)号：US5916423A

    公开(公告)日：1999-06-29

    申请号：US852083

    申请日：1997-05-06

    申请人： John David Westwood

    发明人： John David Westwood

    IPC分类号： G11B5/012 ,  G11B5/31 ,  G11B5/39 ,  C23C14/34 ,  G11B5/127 ,  G11B5/187

    CPC分类号： G11B5/3967 ,  G11B5/3116 ,  G11B5/3163 ,  G11B5/012 ,  Y10T29/49021 ,  Y10T29/49043 ,  Y10T29/49046

    摘要： A magnetic head is provided which has first and second notches in a first pole piece layer adjacent first and second corners at the base of a gap layer wherein the gap layer does not undercut a base of a second pole tip. Field regions of the first pole piece layer which extend from the first and second notches slope upwardly from the notches for protecting components below the first pole piece layer. In one aspect of the invention a method of defining the gap layer sputter deposition and ion milling steps are employed to form a protective layer on first and second side walls of the second pole tip so that unwanted portions of the gap layer can be removed without undercutting the gap layer below the base of the second pole tip. In another aspect of the invention a method of making the first and second notches by sputter deposition and etching are employed to define a protective layer with first and second openings where the first and second notches are to be formed following by ion milling which mills through the openings through the notches until the protective layer is consumed.

    摘要翻译： 提供磁头，其在第一极片层中具有第一和第二凹口，邻近第一和第二角落在间隙层的基部，其中间隙层不会削弱第二极尖的基部。 第一极片层的从第一和第二凹口延伸的场区域从凹口向上倾斜以保护在第一极片层下方的部件。 在本发明的一个方面，采用限定间隙层溅射沉积和离子铣削步骤的方法，以在第二极尖的第一和第二侧壁上形成保护层，使得间隙层的不希望的部分可以在不切割的情况下被去除 间隙层位于第二极尖的底部下方。 在本发明的另一方面，采用通过溅射沉积和蚀刻制造第一和第二凹口的方法来限定具有第一和第二开口的保护层，其中第一和第二凹口将通过离子铣削形成， 开口穿过凹口，直到保护层消耗。

    Single piece slotted ferromagnetic sputtering target and sputtering apparatus
    7.
    发明授权
    Single piece slotted ferromagnetic sputtering target and sputtering apparatus 失效
    单片开槽铁磁溅射靶和溅射装置

    公开(公告)号：US5827414A

    公开(公告)日：1998-10-27

    申请号：US900771

    申请日：1997-07-25

    申请人： John David Westwood

    发明人： John David Westwood

    IPC分类号： C23C14/34 ,  C23C14/35

    CPC分类号： H01J37/3423 ,  C23C14/3407 ,  H01J37/3426

    摘要： Disclosed is a target for a ferromagnetic sputtering apparatus formed of a single piece of ferromagnetic target material. The target has a circular central area, an annular outer area, and a plurality of interconnected slots of specified width in the single piece extending in circumferential directions about the central area, forming a plurality of specified width radial gaps between the circular central area and the annular outer area. The slots of the sputtering target may be arranged to provide tabs crossing the slots to provide structural support to the specified width slots.

    摘要翻译： 公开了由单片铁磁靶材料形成的铁磁溅射装置的目标。 目标具有环形中心区域，环形外部区域和在单个区段中具有特定宽度的多个相互连接的狭槽，其围绕中心区域在圆周方向上延伸，在圆形中心区域和第二区域之间形成多个特定宽度的径向间隙 环形外部区域。 溅射靶的槽可以被布置成提供跨越槽的突出部，以向特定的宽度槽提供结构支撑。