公开(公告)号：US06890667B1

公开(公告)日：2005-05-10

申请号：US10282075

申请日：2002-10-28

Applicant: Bruce Lairson ,  Mourad Benakli

Inventor： Bruce Lairson ,  Mourad Benakli

IPC: G11B5/667 ,  G11B5/673 ,  G11B5/73

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

Abstract: 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.

Abstract translation: 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：US07378164B1

公开(公告)日：2008-05-27

申请号：US11008712

申请日：2004-12-09

Applicant: Bruce Lairson ,  Mourad Benakli

Inventor： Bruce Lairson ,  Mourad Benakli

IPC: G11B5/667 ,  G11B5/673

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

Abstract: 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.

Abstract translation: 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：US20140043708A1

公开(公告)日：2014-02-13

申请号：US13569596

申请日：2012-08-08

Applicant: Mehmet Fatih Erden ,  Mourad Benakli

Inventor： Mehmet Fatih Erden ,  Mourad Benakli

IPC: G11B20/10

CPC classification number: G11B20/1252 ,  G11B20/1217 ,  G11B20/1254 ,  G11B2020/1292 ,  G11B2220/2508 ,  G11B2220/2516

Abstract: Host data to be written to a recording medium is categorized as one of sequential data or random data. The sequential data is written to a first track width on the recording medium. The random data is written to a second track width on the recording medium, the second track width being larger than the first track width.

Abstract translation: 要写入记录介质的主机数据被分类为顺序数据或随机数据之一。 将顺序数据写入记录介质上的第一轨道宽度。 随机数据被写入记录介质上的第二磁道宽度，第二磁道宽度大于第一磁道宽度。

公开(公告)号：US08537501B2

公开(公告)日：2013-09-17

申请号：US13072890

申请日：2011-03-28

Applicant: Mourad Benakli ,  Kirill Aleksandrovich Rivkin ,  James Gary Wessel ,  Dehua Han ,  Huaqing Yin ,  Scott Franzen ,  Jianhua Xue

Inventor： Mourad Benakli ,  Kirill Aleksandrovich Rivkin ,  James Gary Wessel ,  Dehua Han ,  Huaqing Yin ,  Scott Franzen ,  Jianhua Xue

IPC: G11B5/127

CPC classification number: G11B5/11 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/6082

Abstract: A write head, the write head having an air bearing surface, the write head including a magnetic write pole, wherein at the air bearing surface, the write pole has a trailing surface, a leading surface that is opposite the trailing surface, and first and second surfaces; a trailing shield proximate the trailing surface of the magnetic write pole; first and second gaps proximate the first and second surfaces of the magnetic write pole; first and second side shields proximate the first and second gaps, each of the first and second side shields having a trailing shield surface; and first and second antiferromagnetic-coupling layers positioned between the trailing shield surfaces of the first and second side shields and the trailing shield.

公开(公告)号：US20130201577A1

公开(公告)日：2013-08-08

申请号：US13365942

申请日：2012-02-03

Applicant: Radek Lopusnik ,  Mourad Benakli ,  Kirill Aleksandrovich Rivkin ,  Declan Macken ,  James Gary Wessel ,  Jason Bryce Gadbois

Inventor： Radek Lopusnik ,  Mourad Benakli ,  Kirill Aleksandrovich Rivkin ,  Declan Macken ,  James Gary Wessel ,  Jason Bryce Gadbois

IPC: G11B21/00

CPC classification number: G11B5/312 ,  G11B5/315

Abstract: In an example, a method of manufacturing a transducer head comprises configuring a control circuit to actively synchronize magnetic responses of a shield and a write pole during operation. The method also comprises configuring the control circuit to energize at least one coil wire during operation with a current direction opposite to current flow in a main transducer head coil. In another example, a method comprises actively synchronizing magnetic responses of a shield and a write pole. In another example, a transducer head comprises a write pole and a shield, and a control circuit actively synchronizes magnetic responses of the shield and the write pole.

Abstract translation: 在一个示例中，制造换能器头的方法包括配置控制电路以在操作期间主动地同步屏蔽和写极的磁响应。 所述方法还包括配置所述控制电路，以在操作期间以与主换能器头线圈中的电流相反的电流方向对至少一个线圈线供能。 在另一示例中，一种方法包括主动地同步屏蔽和写极的磁响应。 在另一示例中，换能器头包括写极和屏蔽，并且控制电路主动地同步屏蔽和写极的磁响应。

公开(公告)号：US08365393B1

公开(公告)日：2013-02-05

申请号：US12510349

申请日：2009-07-28

Applicant: Mourad Benakli ,  Michael Mallary

Inventor： Mourad Benakli ,  Michael Mallary

IPC: G11B5/187 ,  C23C14/22

CPC classification number: G11B5/11 ,  G11B5/1278 ,  G11B5/3116 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/4906

Abstract: Methods for manufacturing a magnetic head for a disk drive. The methods include the steps of depositing a first non-magnetic spacer layer, depositing a plating seed layer on the first non-magnetic spacer layer and plating at least one side shield and a pole tip layer on the plating seed layer, each of the at least one side shield and the pole tip layer separated by a trench. Then the method includes depositing a first non-magnetic material in the trench using ion-beam assisted deposition and planarizing using a chemical-mechanical polishing step.

Abstract translation: 制造磁盘驱动器的磁头的方法。 所述方法包括以下步骤：沉积第一非磁性间隔层，在第一非磁性间隔层上沉积电镀种子层，并在电镀种子层上镀覆至少一个侧屏蔽和极尖层， 至少一个侧面屏蔽和由沟槽隔开的极尖层。 然后，该方法包括使用离子束辅助沉积和使用化学机械抛光步骤平坦化在沟槽中沉积第一非磁性材料。

公开(公告)号：US08243389B2

公开(公告)日：2012-08-14

申请号：US12967927

申请日：2010-12-14

Applicant: Mourad Benakli ,  Michael Mallary

Inventor： Mourad Benakli ,  Michael Mallary

IPC: G11B5/667 ,  G11B5/82

CPC classification number: G11B5/667 ,  G11B5/82 ,  G11B5/855

Abstract: 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.

Abstract translation: 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：US20110205671A1

公开(公告)日：2011-08-25

申请号：US12710456

申请日：2010-02-23

Applicant: Mourad Benakli ,  Sharat Batra

Inventor： Mourad Benakli ,  Sharat Batra

IPC: G11B5/33

CPC classification number: G11B5/3116 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/315

Abstract: A magnetic recording head includes a magnetic recording write element including a main pole. The main pole has 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 magnetic shield is positioned adjacent the first side surface and a second side magnetic shield positioned adjacent to the second side surface. A first side shield gap separates the first side shield from the first side of the main pole. 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.

Abstract translation: 磁记录头包括具有主极的磁记录写元件。 主极具有前缘和相对的后缘以及将前缘与后缘分开的第一侧表面和第二侧表面。 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。 第一侧屏蔽间隙将第一侧屏蔽与主极的第一侧分离。 第二侧屏蔽间隙将第二侧屏蔽与主极的第二侧分开。 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：US07573683B1

公开(公告)日：2009-08-11

申请号：US11483408

申请日：2006-07-06

Applicant: Mourad Benakli ,  Michael Mallary

Inventor： Mourad Benakli ,  Michael Mallary

IPC: G11B5/127

CPC classification number: G11B5/11 ,  G11B5/1278 ,  G11B5/3116 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/4906

Abstract: A write head for a media drive suited for perpendicularly recording data in adjacent magnetic recording media, the media having a magnetic recording layer and a soft underlayer (SUL). The write head has a pole tip, a write yoke connected to the pole tip, a write return yoke, a write shield, one or more conductive coils surrounding the write yoke, and one or more side shields disposed in close proximity to the pole tip. The write return yoke connects to the write yoke on one end and the write shield on a different end. The one or more side shields are separated from the pole tip and write shields by a non-magnetic material and therefore are “floating” and not directly coupled to the write shield or pole tip.

Abstract translation: 适用于在相邻磁记录介质中垂直记录数据的媒体驱动器的写头，所述介质具有磁记录层和软底层（SUL）。 写头具有极尖，连接到极尖的写磁轭，写入返回磁轭，写入屏蔽，围绕写入磁轭的一个或多个导电线圈以及设置在极尖附近的一个或多个侧屏蔽 。 写入返回磁轭在一端连接到写磁轭，而在另一端连接写屏蔽。 一个或多个侧面屏蔽件与极尖分离，并由非磁性材料写入屏蔽，因此“浮动”并且不直接耦合到写入屏蔽或极尖。

公开(公告)号：US09017833B2

公开(公告)日：2015-04-28

申请号：US11771440

申请日：2007-06-29

Applicant: Mourad Benakli ,  Michael L. Mallary

Inventor： Mourad Benakli ,  Michael L. Mallary

IPC: G11B5/66 ,  G11B5/855

CPC classification number: G11B5/855

Abstract: A patterned magnetic media is disclosed. The patterned media includes etched recording portions including etched portions of a soft magnetic underlayer. In illustrated embodiments, the soft magnetic layer is etched to form recording bits or etched soft magnetic segments to enhance magnetic field strength in the magnetic recording portions. In other embodiments, soft magnetic layers are deposited in etched regions or areas of the media.

Abstract translation: 公开了一种图案化的磁性介质。 图案化介质包括蚀刻记录部分，其包括软磁性底层的蚀刻部分。 在所示的实施例中，软磁层被蚀刻以形成记录位或蚀刻的软磁段，以增强磁记录部分的磁场强度。 在其他实施例中，软磁性层沉积在介质的蚀刻区域或区域中。