公开(公告)号：US08717707B2

公开(公告)日：2014-05-06

申请号：US13609657

申请日：2012-09-11

申请人： Mourad Benakli ,  Sharat Batra

发明人： Mourad Benakli ,  Sharat Batra

IPC分类号： G11B5/11 ,  G11B5/23 ,  G11B5/31

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/315

摘要： A magnetic recording head includes a magnetic recording write element including a main pole having a leading edge and an opposing trailing edge and a first side surface and a second side surface separating the leading edge from the trailing edge. A first side shield gap separates a first side shield from the first side of the main pole and a second side shield gap separates the second side shield from the second side of the main pole. A front magnetic shield is separated from the main pole trailing edge by a front shield gap. A recess extends into the front shield adjacent to the trailing edge, and parallel to the trailing edge. The recess extends laterally away from the main pole and into the front shield a distance greater than the first side shield gap or second side shield gap.

摘要翻译： 磁记录头包括磁记录写元件，该磁记录写元件包括具有前缘和相对后缘的主极和分离前缘与后缘的第一侧表面和第二侧表面。 第一侧屏蔽间隙将第一侧屏蔽与主极的第一侧分开，并且第二侧屏蔽间隙将第二侧屏蔽与主极的第二侧分离。 前磁屏蔽通过前屏蔽间隙与主极后缘分离。 凹槽与后缘相邻地延伸到前屏蔽件中，并且平行于后缘。 凹部从主极横向延伸并且远离第一侧屏蔽间隙或第二侧屏蔽间隙的距离远离前屏蔽。

公开(公告)号：US20120281314A1

公开(公告)日：2012-11-08

申请号：US13100984

申请日：2011-05-04

申请人： Radek Lopusnik ,  Kirill Aleksandrovich Rivkin ,  Mourad Benakli ,  James Gary Wessel ,  Scott Michael Franzen

发明人： Radek Lopusnik ,  Kirill Aleksandrovich Rivkin ,  Mourad Benakli ,  James Gary Wessel ,  Scott Michael Franzen

IPC分类号： G11B5/11

CPC分类号： G11B5/112 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315

摘要： A magnetic shield may be capable of enhancing magnetic writing, particularly in transducing elements accessing data bits from data tracks. At least one magnetic shield is adjacent a write pole. The shield has a flux concentration feature on an air bearing surface (ABS) capable of enhancing magnetic undershoot between the shield and the write pole.

摘要翻译： 磁屏蔽可能能够增强磁性写入，特别是在从数据轨道访问数据位的转换元件中。 至少一个磁屏蔽与写入极相邻。 屏蔽件在能够增强屏蔽和写入极之间的磁下冲的空气轴承表面（ABS）上具有通量集中特征。

公开(公告)号：US08289647B2

公开(公告)日：2012-10-16

申请号：US12710456

申请日：2010-02-23

申请人： Mourad Benakli ,  Sharat Batra

发明人： Mourad Benakli ,  Sharat Batra

IPC分类号： G11B5/11 ,  G11B5/23 ,  G11B5/235 ,  G11B5/31

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/315

摘要： A magnetic recording head includes a magnetic recording write element including a main pole having a leading edge, an opposing trailing edge, a first side surface and a second side surface. A first side magnetic shield is positioned adjacent the first side surface and a second side magnetic shield positioned adjacent to the second side surface. First and second side shields are separated from the main pole by a first and second side shield gap. A front magnetic shield is separated from the main pole trailing edge by a front shield gap. A recess extends into the front shield adjacent to the trailing edge, and parallel to the trailing edge, and extends laterally away from the main pole and into the front shield a distance greater than the first or second side shield gap.

摘要翻译： 磁记录头包括磁记录写元件，磁记录写元件包括具有前缘，相对后缘，第一侧表面和第二侧表面的主极。 第一侧磁屏蔽件邻近第一侧表面定位，第二侧磁屏蔽件邻近第二侧表面定位。 第一和第二侧面屏蔽通过第一和第二侧面屏蔽间隙与主极分离。 前磁屏蔽通过前屏蔽间隙与主极后缘分离。 凹口延伸到前屏蔽件中，与后缘相邻并且平行于后缘，并且横向远离主极并且远离第一或第二侧屏蔽间隙远离前屏蔽件。

公开(公告)号：US07982994B1

公开(公告)日：2011-07-19

申请号：US12778697

申请日：2010-05-12

申请人： Mehmet Fatih Erden ,  Mourad Benakli ,  Walter Richard Eppler

发明人： Mehmet Fatih Erden ,  Mourad Benakli ,  Walter Richard Eppler

IPC分类号： G11B5/02

CPC分类号： G11B5/02 ,  G11B5/027 ,  G11B5/09

摘要： A data storage system includes recording media with a shingled track pattern of multiple data tracks in which mapped data bits are recorded. The mapped data are coherently aligned with one another across the multiple data tracks. A read head has an effective read head width that extends across the multiple data tracks and that is aligned to coherently read the mapped data bits. A read head output includes a non-binary multi-level amplitude summation of the mapped data bits.

摘要翻译： 数据存储系统包括具有记录了映射的数据位的多个数据磁道的带有杂波的磁道图案的记录介质。 映射的数据在多个数据轨道上彼此相干地对齐。 读头具有跨多个数据磁道延伸的有效读头宽度，并将其对准以相干地读取映射的数据位。 读头输出包括映射数据位的非二进制多电平振幅求和。

公开(公告)号：US20110085267A1

公开(公告)日：2011-04-14

申请号：US12967927

申请日：2010-12-14

申请人： Mourad Benakli ,  Michael Mallary

发明人： Mourad Benakli ,  Michael Mallary

IPC分类号： G11B5/74 ,  G11B5/82 ,  G11B5/62

CPC分类号： G11B5/667 ,  G11B5/82 ,  G11B5/855

摘要： A recording media design having discrete track recording structure where the trenches between tracks are filled with a soft magnetic material is provided. The soft magnetic material provides a low magnetic impedance path to the soft underlayer such that fringe fields from the write head are conducted to the soft underlayer without having a negative effect such as adjacent track erasure. A method of manufacturing the media includes a nano-imprint step and ion milling out the data layer to create the trenches. A B2O3 material allows the data layer to be ion milled out without redeposition bridging the B2O3 layer thus preventing lift off of the mask. The trenches are then filled by ion deposition with the layers of ferromagnetic material separated by an anti-ferromagnetic coupling that causes the flux to be conducted to the soft underlayer and remnant flux to rotate within the island and not into adjacent tracks.

摘要翻译： 提供了具有离散轨道记录结构的记录介质设计，其中轨道之间的沟槽被软磁材料填充。 软磁材料提供到软底层的低磁阻抗路径，使得来自写头的边缘场被传导到软底层，而不会产生诸如相邻轨道擦除的负面影响。 制造介质的方法包括纳米压印步骤和离子铣出数据层以产生沟槽。 B2O3材料允许将数据层离子研磨而不再沉积B2O3层，从而防止掩模剥离。 然后通过离子沉积来填充沟槽，铁磁材料层通过反铁磁耦合分开，这导致通量被引导到软底层，剩余通量在岛内旋转而不进入相邻的轨道。

公开(公告)号：US07876529B1

公开(公告)日：2011-01-25

申请号：US11592507

申请日：2006-11-03

申请人： Mourad Benakli ,  Michael Mallary

发明人： Mourad Benakli ,  Michael Mallary

IPC分类号： G11B5/667 ,  G11B5/82

CPC分类号： G11B5/667 ,  G11B5/82 ,  G11B5/855

摘要： An apparatus having a write head for writing data on to a recording medium comprises a recording disk medium and one or more ferromagnetic islands. The recording disk medium has a data layer in discrete tracks with trenches between the discrete tracks, and a soft underlayer beneath the data layer and the trenches. The one or more ferromagnetic islands are disposed in the trenches between the discrete tracks in the recording disk medium and over the soft underlayer. The one or more ferromagnetic islands comprise a first layer having a first magnetization direction and a second layer having a second magnetization direction that is different than the first magnetization direction.

摘要翻译： 具有用于将数据写入记录介质的写入头的装置包括记录盘介质和一个或多个铁磁岛。 记录盘介质具有在离散轨道之间的数据层，在离散轨道之间具有沟槽，并且在数据层和沟槽之下具有软底层。 一个或多个铁磁岛设置在记录盘介质中的离散轨道之间的沟槽中并且在软底层上。 一个或多个铁磁岛包括具有第一磁化方向的第一层和具有与第一磁化方向不同的第二磁化方向的第二层。

公开(公告)号：US07688544B1

公开(公告)日：2010-03-30

申请号：US11438452

申请日：2006-05-22

申请人： Michael Mallary ,  Mourad Benakli

发明人： Michael Mallary ,  Mourad Benakli

IPC分类号： G11B5/187

CPC分类号： G08B13/19693 ,  G08B13/19632 ,  G08B13/19634 ,  G08B13/19643 ,  G08B25/009

摘要： A write head includes a write return yoke, a write yoke connected to the write return yoke, conductive coils surrounding the write yoke, a write pole tip, and a non-magnetic spacer connecting the write pole tip to the write yoke. The non-magnetic spacer allows for reducing a magnetization of the write pole tip due to a remnant magnetic field in the write yoke. In another embodiment, the write head comprises a write shield, a write return yoke, a write yoke, conductive coils, a write pole tip, and a saturable yoke shunt connecting the write pole tip and the write shield. The saturable yoke shunt directs a limited amount of magnetic flux from the write pole tip to the write shield, such that when there is a remnant magnetic field in the write pole tip, the magnetic flux is directed to the write shield rather than to a disk.

摘要翻译： 写头包括写入返回磁轭，连接到写入返回磁轭的写入磁轭，围绕写入磁轭的导电线圈，写入磁极尖端和将写入磁极尖端连接到写入磁轭的非磁性间隔件。 非磁性间隔件允许由于写入磁轭中的残余磁场而减小写入极尖的磁化。 在另一个实施例中，写入头包括写入屏蔽，写入返回磁轭，写入磁轭，导电线圈，写入磁极尖端和连接写入磁极尖端和写入屏蔽的饱和磁轭分流器。 可饱和磁轭分流器将有限量的磁通量从写入磁极尖端引导到写入屏蔽件，使得当写入极尖端中存在残余磁场时，磁通量被引导到写入屏蔽件而不是磁盘 。

公开(公告)号：US20100061019A1

公开(公告)日：2010-03-11

申请号：US12205061

申请日：2008-09-05

申请人： Mourad Benakli ,  Michael Leigh Mallary

发明人： Mourad Benakli ,  Michael Leigh Mallary

IPC分类号： G11B5/48

CPC分类号： G11B5/3967 ,  G11B5/3116 ,  G11B5/3143 ,  G11B2005/0018

摘要： A magnetic storage system includes a magnetic storage medium and a transducer positioned adjacent the magnetic storage medium. The transducer has a reader positioned adjacent writer and a reader bias coil located on the transducer. Transducer circuitry is configured to apply a bias signal to the reader bias coil during a read-write operation. The reader bias coil generates a reader bias field proximate the reader.

摘要翻译： 磁存储系统包括磁存储介质和位于磁存储介质附近的换能器。 换能器具有位于写入器附近的读取器和位于换能器上的读取器偏置线圈。 传感器电路被配置为在读写操作期间将偏置信号施加到读取器偏置线圈。 读取器偏置线圈在读取器附近产生读取器偏置场。

公开(公告)号：US07378164B1

公开(公告)日：2008-05-27

申请号：US11008712

申请日：2004-12-09

申请人： Bruce Lairson ,  Mourad Benakli

发明人： Bruce Lairson ,  Mourad Benakli

IPC分类号： G11B5/667 ,  G11B5/673

CPC分类号： G11B5/667 ,  Y10T428/12465 ,  Y10T428/12757 ,  Y10T428/12861 ,  Y10T428/12931 ,  Y10T428/12937 ,  Y10T428/12944 ,  Y10T428/12951 ,  Y10T428/24967 ,  Y10T428/26

摘要： A magnetic recording medium having a soft magnetic underlayer structure that includes two soft underlayers is presented. A thick first soft underlayer, disposed on the medium substrate, is made of material which provides a low magnitude of magnetization saturation (Bsat) and high permeability. The first soft underlayer can be formed by plating or high-rate sputtering. The second soft underlayer, which has a lesser thickness than the first soft underlayer, is made of a material which provides a relatively high magnitude of Bsat and low permeability. The second soft underlayer can be formed by low-rate sputtering. The first soft under layer can be isolated from other layers in the medium by an exchange isolation layer. The second soft underlayer can be exchange coupled to a radial exchange pin layer disposed on the exchange isolation layer.

摘要翻译： 本发明提供了一种具有软磁底层结构的磁记录介质，其包括两个软底层。 设置在介质基板上的厚的第一软底层由提供低的磁化饱和度（Bsat）和高磁导率的材料制成。 第一软底层可以通过电镀或高速溅射形成。 具有比第一软底层厚度小的第二软底层由提供相对高的Bsat和低渗透性的材料制成。 第二软底层可以通过低速溅射形成。 第一软底层可以通过交换隔离层与介质中的其它层隔离。 第二软底层可以交换耦合到设置在交换隔离层上的径向交换针层。

公开(公告)号：US07324304B1

公开(公告)日：2008-01-29

申请号：US10993915

申请日：2004-11-18

申请人： Mourad Benakli ,  Michael Mallary ,  Adam F. Torabi

发明人： Mourad Benakli ,  Michael Mallary ,  Adam F. Torabi

IPC分类号： G11B5/127 ,  G11B5/31

CPC分类号： G11B5/3146 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/1872 ,  G11B5/3116 ,  Y10T29/49032 ,  Y10T29/49052

摘要： A write pole for a read/write head of a disk drive system has a tapered surface on a leading edge thereof. Preferably, the tapered surface has a taper angle of between 0 and 20 degrees from a plane normal to the ABS. By having a write pole with a taper in this manner, sufficient write fields can be achieved even with thinner write pole tips on the ABS surface. By decreasing the thickness of the write pole tip in this manner while maintaining sufficiently high write fields, the skew profile of a write head can be decreased and areal density increased.

摘要翻译： 用于磁盘驱动器系统的读/写头的写极在其前沿上具有锥形表面。 优选地，锥形表面具有与垂直于ABS的平面在0和20度之间的锥角。 通过以这种方式具有锥形的写入极，即使在ABS表面上具有较薄的写入极尖，也可以实现足够的写入场。 通过以这种方式减小写极尖的厚度同时保持足够高的写入场，可以减小写头的偏斜轮廓并增加面密度。