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    Magnetic head having a spin torque oscillator (STO) with a hybrid heusler field generation layer (FGL)
    1.
    发明授权
    Magnetic head having a spin torque oscillator (STO) with a hybrid heusler field generation layer (FGL) 有权
    具有具有混合heusler场产生层（FGL）的自旋扭矩振荡器（STO）的磁头，

    公开(公告)号：US09230597B2

    公开(公告)日：2016-01-05

    申请号：US14070401

    申请日：2013-11-01

    申请人： HGST Netherlands B.V.

    发明人： Masato Shimoto ,  Keiichi Nagasaka ,  Masato Matsubara ,  Yo Sato

    IPC分类号： G11B5/127 ,  G11B23/00 ,  G11B5/31 ,  G11B5/00

    CPC分类号： G11B23/0057 ,  G11B5/1278 ,  G11B5/314 ,  G11B5/3146 ,  G11B2005/0024 ,  Y10T29/49055

    摘要： In one embodiment, a magnetic head includes a main pole configured to write data to a magnetic medium, a trailing shield positioned on a trailing side of the main pole, and a STO between the main pole and the trailing shield, wherein the STO includes a laminated structure having a FGL, a spun polarization layer (SPL), and a non-magnetic spacer positioned between the FGL and the SPL, wherein the FGL includes a laminated structure having one or more layers of a CoFe alloy and a Heusler alloy alternately laminated in this order from an end of the FGL closest to the non-magnetic spacer. In another embodiment, a method is presented for forming such a magnetic head utilizing a FGL that includes a laminated structure baying layers of a CoFe alloy and a Heusler alloy alternately laminated in this order from an end of the FGL closest to the non-magnetic spacer.

    摘要翻译： 在一个实施例中，磁头包括被配置为将数据写入磁介质的主极，位于主极的后侧的后屏蔽和主极与后屏蔽之间的STO，其中STO包括 具有FGL的层压结构，旋转偏振层（SPL）和位于FGL和SPL之间的非磁性间隔件，其中FGL包括具有一层或多层CoFe合金和Heusler合金交替层压的层压结构 按照从最接近非磁性间隔物的FGL的一端的顺序。 在另一个实施例中，提出了一种使用FGL形成这种磁头的方法，所述FGL包括从最接近非磁性间隔物的FGL的端部依次层叠的CoFe合金和Heusler合金的叠层结构的层叠结构 。

    MAGNETIC HEAD HAVING A SPIN TORQUE OSCILLATOR (STO) WITH A HYBRID HEUSLER FIELD GENERATION LAYER (FGL)
    2.
    发明申请
    MAGNETIC HEAD HAVING A SPIN TORQUE OSCILLATOR (STO) WITH A HYBRID HEUSLER FIELD GENERATION LAYER (FGL) 有权
    具有混合高频场发生层（FGL）的旋转扭矩振荡器（STO）的磁头

    公开(公告)号：US20150124347A1

    公开(公告)日：2015-05-07

    申请号：US14070401

    申请日：2013-11-01

    申请人： HGST Netherlands B.V.

    发明人： Masato Shimoto ,  Keiichi Nagasaka ,  Masato Matsubara ,  Yo Sato

    IPC分类号： G11B5/35 ,  G11B23/00

    CPC分类号： G11B23/0057 ,  G11B5/1278 ,  G11B5/314 ,  G11B5/3146 ,  G11B2005/0024 ,  Y10T29/49055

    摘要： In one embodiment, a magnetic head includes a main pole configured to write data to a magnetic medium, a trailing shield positioned on a trailing side of the main pole, and a STO between the main pole and the trailing shield, wherein the STO includes a laminated structure having a FGL, a spun polarization layer (SPL), and a non-magnetic spacer positioned between the FGL and the SPL, wherein the FGL includes a laminated structure having one or more layers of a CoFe alloy and a Heusler alloy alternately laminated in this order from an end of the FGL closest to the non-magnetic spacer. In another embodiment, a method is presented for forming such a magnetic head utilizing a FGL that includes a laminated structure baying layers of a CoFe alloy and a Heusler alloy alternately laminated in this order from an end of the FGL closest to the non-magnetic spacer.

    摘要翻译： 在一个实施例中，磁头包括被配置为向磁介质写入数据的主极，位于主极的后侧的后屏蔽和主极与后屏蔽之间的STO，其中STO包括 具有FGL的层压结构，旋转偏振层（SPL）和位于FGL和SPL之间的非磁性间隔件，其中FGL包括具有一层或多层CoFe合金和Heusler合金交替层压的层压结构 按照从最接近非磁性间隔物的FGL的一端的顺序。 在另一个实施例中，提出了一种使用FGL形成这种磁头的方法，所述FGL包括从最接近非磁性间隔物的FGL的端部依次交替层叠的CoFe合金和Heusler合金的叠层结构的层叠结构 。

    METHOD OF MAKING A MULTI-CHANNEL TIME BASED SERVO TAPE MEDIA
    3.
    发明申请
    METHOD OF MAKING A MULTI-CHANNEL TIME BASED SERVO TAPE MEDIA 审中-公开
    制作多通道时基伺服带介质的方法

    公开(公告)号：US20140085751A1

    公开(公告)日：2014-03-27

    申请号：US14033671

    申请日：2013-09-23

    申请人： Advanced Research Corporation

    发明人： Matthew P. Dugas

    IPC分类号： G11B5/23 ,  G11B5/235

    CPC分类号： G11B5/23 ,  G11B5/127 ,  G11B5/1276 ,  G11B5/193 ,  G11B5/232 ,  G11B5/235 ,  G11B5/29 ,  G11B5/295 ,  G11B5/3116 ,  G11B5/4893 ,  G11B5/584 ,  G11B20/1211 ,  G11B20/1217 ,  Y10T29/49055 ,  Y10T29/49057

    摘要： A thin film magnetic recording head is fabricated by forming a substrate from opposing ferrite blocks which have a ceramic member bonded between them. This structure is then diced to form a plurality of columns, wherein each column has a ferrite/ceramic combination. Each column represents a single channel in the completed head. A block of ceramic is then cut to match the columned structure and the two are bonded together. The bonded structure is then cut or ground until a head is formed, having ceramic disposed between each channel. A ferrite back-gap is then added to each channel, minimizing the reluctance of the flux path. The thin film is patterned on the head to optimize various channel configurations.

    摘要翻译： 通过从相对的铁素体块形成衬底来制造薄膜磁记录头，所述铁氧体块在它们之间具有陶瓷构件。 然后将该结构切成多个柱，其中每个柱具有铁素体/陶瓷组合。 每列表示完成的头中的单个通道。 然后切割一块陶瓷以匹配柱状结构，并将两个结合在一起。 然后将接合结构切割或研磨直到形成头部，其中陶瓷设置在每个通道之间。 然后将铁氧体背隙添加到每个通道，使磁通路径的磁阻最小化。 该薄膜在头部被图案化以优化各种通道配置。

    ROTATING ELECTRIC MACHINE MANUFACTURING METHOD AND ROTATING ELECTRIC MACHINE
    5.
    发明申请
    ROTATING ELECTRIC MACHINE MANUFACTURING METHOD AND ROTATING ELECTRIC MACHINE 有权
    旋转电机制造方法和旋转电机

    公开(公告)号：US20090133243A1

    公开(公告)日：2009-05-28

    申请号：US12275032

    申请日：2008-11-20

    申请人： Hiroyuki AKITA

    发明人： Hiroyuki AKITA

    IPC分类号： H02K15/02

    CPC分类号： H02K1/148 ,  H02K15/022 ,  H02K29/03 ,  Y10T29/49009 ,  Y10T29/49012 ,  Y10T29/49021 ,  Y10T29/49055 ,  Y10T29/49073 ,  Y10T29/49078

    摘要： There is provided a rotating electric machine capable of reducing torque pulsation, even when a slight stepped portion is present in an inner diameter shape of a stator core formed by allowing coupling split cores divided in every magnetic pole to be in an annular shape. The stator core is formed by stacking a plurality of laminates prepared by stack of coupling split core members formed by punching steel sheets in an annularly arranged shape in a state where the laminates are rotated one another by a predetermined angle. With such a configuration, it is possible to mutually offset torque pulsation components caused by the shape asymmetry of the laminates and reduce the torque pulsation components of the stator core on the whole.

    摘要翻译： 即使在通过使在每个磁极上分开的耦合分裂铁芯成为环状形成的定子铁心的内径形状中存在轻微的台阶部分的情况下，也能够提供能够减小转矩脉动的旋转电机。 定子芯通过堆叠多个层叠体而形成，所述多个层叠体通过堆叠的联接分裂芯部件组成，所述联接分裂芯部件在层压体彼此旋转预定角度的状态下以环形布置的形状冲压钢板而形成。 通过这样的结构，能够相互抵消由层叠体的形状不对称引起的扭矩脉动成分，并且总体上降低定子铁心的转矩脉动成分。

    LOW INDUCTANCE, FERRITE SUB-GAP SUBSTRATE STRUCTURE FOR SURFACE FILM MAGNETIC RECORDING HEADS
    6.
    发明申请
    LOW INDUCTANCE, FERRITE SUB-GAP SUBSTRATE STRUCTURE FOR SURFACE FILM MAGNETIC RECORDING HEADS 失效
    表面电磁记录头的低电感，铁素体基底层结构

    公开(公告)号：US20080024913A1

    公开(公告)日：2008-01-31

    申请号：US11842692

    申请日：2007-08-21

    申请人： Matthew Dugas

    发明人： Matthew Dugas

    IPC分类号： G11B5/265

    CPC分类号： G11B5/23 ,  G11B5/127 ,  G11B5/1276 ,  G11B5/193 ,  G11B5/232 ,  G11B5/235 ,  G11B5/29 ,  G11B5/295 ,  G11B5/3116 ,  G11B5/4893 ,  G11B5/584 ,  G11B20/1211 ,  G11B20/1217 ,  Y10T29/49055 ,  Y10T29/49057

    摘要： A thin film magnetic recording head is fabricated by forming a substrate from opposing ferrite blocks which have a ceramic member bonded between them. This structure is then diced to form a plurality of columns, wherein each column has a ferrite/ceramic combination. Each column represents a single channel in the completed head. A block of ceramic is then cut to match the columned structure and the two are bonded together. The bonded structure is then cut or ground until a head is formed, having ceramic disposed between each channel. A ferrite back-gap is then added to each channel, minimizing the reluctance of the flux path. The thin film is patterned on the head to optimize various channel configurations.

    摘要翻译： 通过从相对的铁素体块形成衬底来制造薄膜磁记录头，所述铁氧体块在它们之间具有陶瓷构件。 然后将该结构切成多个柱，其中每个柱具有铁素体/陶瓷组合。 每列表示完成的头中的单个通道。 然后切割一块陶瓷以匹配柱状结构，并将两个结合在一起。 然后将接合结构切割或研磨直到形成头部，其中陶瓷设置在每个通道之间。 然后将铁氧体背隙添加到每个通道，使磁通路径的磁阻最小化。 该薄膜在头部被图案化以优化各种通道配置。

    Servo write method for magnetic tape
    9.
    发明授权
    Servo write method for magnetic tape 有权
    磁带伺服写入方式

    公开(公告)号：US07206167B2

    公开(公告)日：2007-04-17

    申请号：US10696824

    申请日：2003-10-30

    申请人： Patricia A. Beck ,  Paul W. Poorman ,  George M. Clifford, Jr. ,  Richard H. Henze

    发明人： Patricia A. Beck ,  Paul W. Poorman ,  George M. Clifford, Jr. ,  Richard H. Henze

    IPC分类号： G11B5/23

    CPC分类号： G11B5/187 ,  G11B5/1871 ,  G11B5/4893 ,  G11B5/584 ,  G11B15/62 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49048 ,  Y10T29/49055 ,  Y10T29/4906 ,  Y10T29/49789 ,  Y10T29/49798

    摘要： A batch fabrication technique is described that increases the manufacturing efficiency of servo write heads and also improves servo pattern definition for fine features, while reducing tape and head wear. Multiple heads are fabricated as a batch from one or more ferrite wafers. A nominally flat, large wafer surface and a contour suitable for uniform photoresist application and planar photolithography permit fine servo pattern definition. A rounded leading edge on the head creates an air bearing to reduce wear of the tape and of the head. Moreover, any head wear occurs at the leading edge rather than in the region of the head where the servo pattern is formed. The servo write head may have a substantially planar head surface. A leading edge is disposed adjacent to the head surface such that the tape contacts the leading edge before passing over the head surface. The leading edge is rounded to form an air bearing between the head surface and the tape. A rounded trailing edge may be disposed adjacent to the head surface such that the tape passes over the trailing edge after passing over the head surface. The head may be formed from an upper ferrite wafer having a non-magnetic spacer. Non-magnetic material is photolithographically defined to produce gaps above the spacer. The non-magnetic material may be photoresist, semiconductor materials, glass, metal or the like. The material may even be removed later to leave air gaps. The non-magnetic material forms a region where the field loops out to intersect the passing tape, thereby transferring a magnetic pattern to tape. Additionally, a lower ferrite wafer may be mated to the upper ferrite wafer to complete a magnetic circuit around the gaps. The upper or lower ferrite wafer may have a channel through which an inductive winding passes. Multiple heads may be formed through batch processing of the upper and lower ferrite wafers.

    摘要翻译： 描述了一种批量制造技术，其提高了伺服写入头的制造效率，并且还改善了精细特征的伺服模式定义，同时减少了磁带和磁头磨损。 多个头部从一个或多个铁氧体晶片制成批次。 标称平坦，大的晶片表面和适用于均匀光刻胶应用和平面光刻的轮廓允许精细的伺服模式定义。 头部圆角的前缘形成一个空气轴承，以减少磁带和磁头的磨损。 此外，任何头部磨损发生在前缘而不是在形成伺服图案的头部的区域中。 伺服写入头可以具有基本平坦的头表面。 前缘邻近头表面设置，使得带在通过头表面之前接触前缘。 前缘是圆形的，以在头表面和带之间形成空气轴承。 圆形的后缘可以邻近头部表面设置，使得带在经过头表面之后越过后缘。 头部可以由具有非磁性间隔物的上部铁氧体晶片形成。 非磁性材料被光刻定义以在间隔物上方产生间隙。 非磁性材料可以是光致抗蚀剂，半导体材料，玻璃，金属等。 材料甚至可以稍后移除以留下空隙。 非磁性材料形成区域，其中磁场循环出来以与通过的磁带相交，从而将磁性图案转印到磁带上。 此外，下部铁氧体晶片可以与上部铁氧体晶片配合，以在该间隙周围形成磁路。 上或下铁素体晶片可以具有感应绕组通过的通道。 可以通过上下铁素体晶片的批量处理形成多个头。