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1. 发明授权

US08320078B1 Perpendicular magnetic recording write head with antiparallel-coupled laminated main pole having a tapered trailing edge 有权
标题翻译：具有反并联耦合层叠主极的垂直磁记录头具有锥形后缘
公开(公告)号：US08320078B1
公开(公告)日：2012-11-27
申请号：US13408213
申请日：2012-02-29
申请人： Alexander M. Zeltser , Stefan Maat , Wen-Chien David Hsiao
发明人： Alexander M. Zeltser , Stefan Maat , Wen-Chien David Hsiao
IPC分类号： G11B5/31
CPC分类号： G11B5/1278 , G11B5/147 , G11B5/3116 , G11B5/3146
摘要： A perpendicular magnetic recording write head has an improved antiparallel-coupled laminated main pole (MP) with a tapered trailing edge. The laminated MP has three ferromagnetic layers and two non-magnetic antiparallel-coupling (APC) layers. A first ferromagnetic layer (FM1) has a thickness T1 and a planar end face at the air-bearing surface (ABS). A second ferromagnetic layer (FM2) has a total thickness T2 and includes a first portion with a thickness T4 that has an end face coplanar with the end face of FM1 and a second portion with a tapered end face. A first APC layer separates FM1 and FM2. A third ferromagnetic layer (FM3) has a thickness T3 and a tapered end face that is coplanar with the tapered end face of FM2. A second APC layer separates FM2 and FM3. The net flux is minimized at both the ABS and at MP cross-sections recessed from the ABS.
摘要翻译：垂直磁记录写头具有改进的具有锥形后缘的反并联耦合层叠主极（MP）。层压MP具有三个铁磁层和两个非磁性反平行耦合（APC）层。第一铁磁层（FM1）具有厚度T1和空气轴承表面（ABS）处的平坦端面。第二铁磁层（FM2）具有总厚度T2，并且包括具有与FM1的端面共面的端面的厚度T4的第一部分和具有锥形端面的第二部分。第一APC层分离FM1和FM2。第三铁磁层（FM3）具有与FM2的锥形端面共面的厚度T3和锥形端面。第二个APC层分离FM2和FM3。在ABS和从ABS嵌入的MP截面处，净通量都被最小化。

2. 发明申请

US20110249365A1 PERPENDICULAR MAGNETIC RECORDING WRITE HEAD WITH IMPROVED LAMINATED MAIN POLE 有权
标题翻译：具有改进层压主要特点的磁记录磁头
公开(公告)号：US20110249365A1
公开(公告)日：2011-10-13
申请号：US12759508
申请日：2010-04-13
申请人： Alexander M. Zeltser , Stefan Maat
发明人： Alexander M. Zeltser , Stefan Maat
IPC分类号： G11B5/187 , G11B21/16
CPC分类号： G11B5/147 , G11B5/3116 , G11B5/3146 , G11B5/315
摘要： A perpendicular magnetic recording write head has an improved antiferromagnetically-coupled laminated main pole (MP) formed on a substrate. The MP has two ferromagnetic multilayers, each comprising at least one FeCo/NiFe/FeCo ferromagnetic trilayer, antiferromagnetically coupled across an antiferromagnetically coupling (AFC) film consisting essentially of ruthenium (Ru). The MP has a NiFe layer directly above the AFC film, on the side of the AFC film opposite the side facing the substrate, and in contact with the Ru AFC film and the lower FeCo layer of the upper multilayer. There is no NiFe layer directly below the Ru AFC film so the side of the AFC film facing the substrate is in direct contact with the upper FeCo layer of the lower multilayer.
摘要翻译：垂直磁记录写头具有形成在基板上的改进的反铁磁耦合叠层主极（MP）。 MP具有两个铁磁多层，每层包含至少一个FeCo / NiFe / FeCo铁磁性三层膜，反向铁磁耦合在基本上由钌（Ru）组成的反铁磁耦合（AFC）膜上。 MP具有在AFC膜正上方的NiFe层，在与基板相对的一侧的AFC膜侧，与Ru AFC膜和上部多层的下部FeCo层接触。在Ru AFC膜的正下方没有NiFe层，因此面向衬底的AFC膜的侧面与下部多层的上部FeCo层直接接触。

3. 发明授权

US08385025B2 Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor with improved seed layer structure for hard bias layer 有权
标题翻译：电流垂直于平面（CPP）磁阻（MR）传感器，具有改进的用于硬偏置层的种子层结构
公开(公告)号：US08385025B2
公开(公告)日：2013-02-26
申请号：US12969466
申请日：2010-12-15
申请人： Stefan Maat , Alexander M. Zeltser
发明人： Stefan Maat , Alexander M. Zeltser
IPC分类号： G11B5/39
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B2005/3996 , Y10T428/1121
摘要： A current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor has an improved seed layer structure for the ferromagnetic hard (high coercivity) bias layer that is used to longitudinally bias the sensor's free ferromagnetic layer. The seed layer structure is a trilayer consisting of a first seed layer of tantalum (Ta), a second seed layer of one or both titanium (Ti) and Ti-oxide on and in contact with the Ta layer, and a third seed layer of tungsten (W) on and in contact with the second seed layer.
摘要翻译：电流垂直于平面（CPP）磁阻（MR）传感器具有用于铁磁硬（高矫顽力）偏置层的改进的种子层结构，其用于纵向偏置传感器的自由铁磁层。种子层结构是由钽（Ta）的第一种子层，与Ta层接触并与Ta层接触的钛（Ti）和Ti氧化物中的一种或两种的第二晶种层组成的三层，以及第三种子层钨（W）与第二种子层接触并接触。

4. 发明授权

US08218270B1 Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor with improved hard magnet biasing structure 有权
标题翻译：具有改进的硬磁体偏置结构的电流垂直平面（CPP）磁阻（MR）传感器
公开(公告)号：US08218270B1
公开(公告)日：2012-07-10
申请号：US13077815
申请日：2011-03-31
申请人： Alexander M. Zeltser , Stefan Maat
发明人： Alexander M. Zeltser , Stefan Maat
IPC分类号： G11B5/39
CPC分类号： G11B5/3932 , G01R33/098 , H01L43/08 , H01L43/10
摘要： A hard magnet biasing structure for a CPP-GMR or CPP-TMR read head for a magnetic recording disk drive is located between the two sensor shields and abutting the side edges of the sensor free layer. An insulating layer is located between the biasing structure and the lower shield and the side edges of the free layer. The biasing structure includes a seed layer of either Ir or Ru, a layer of ferromagnetic chemically-ordered FePt alloy hard bias layer on the seed layer, and a Ru or Ru/Ir capping layer on the FePt alloy hard bias layer. The FePt alloy has a face-centered-tetragonal structure with its c-axis generally in the plane of the layer. The relatively thin seed layer and capping layer allow the biasing structure to be made very thin while still permitting the FePt alloy hard bias layer to have high coercivity (Hc), a high remanent magnetization-thickness product (Mrt) and a high squareness (S=Mrt/Ms).
摘要翻译：用于磁记录盘驱动器的CPP-GMR或CPP-TMR读取头的硬磁体偏置结构位于两个传感器屏蔽之间并邻接传感器自由层的侧边缘。绝缘层位于偏置结构和下屏蔽之间以及自由层的侧边缘之间。偏置结构包括Ir或Ru的种子层，种子层上的铁磁化学有序FePt合金硬偏置层的层，以及FePt合金硬偏压层上的Ru或Ru / Ir覆盖层。 FePt合金具有面向中心的四边形结构，其c轴通常在层的平面中。相对薄的种子层和覆盖层允许偏置结构非常薄，同时仍允许FePt合金硬偏置层具有高矫顽力（Hc），高剩余磁化厚度乘积（Mrt）和高矩形度（S = Mrt / Ms）。

5. 发明授权

US08139321B2 Perpendicular magnetic recording write head with improved laminated main pole 有权
标题翻译：垂直磁记录头与改进的层叠主极
公开(公告)号：US08139321B2
公开(公告)日：2012-03-20
申请号：US12759508
申请日：2010-04-13
申请人： Alexander M. Zeltser , Stefan Maat
发明人： Alexander M. Zeltser , Stefan Maat
IPC分类号： G11B5/31
CPC分类号： G11B5/147 , G11B5/3116 , G11B5/3146 , G11B5/315
摘要： A perpendicular magnetic recording write head has an improved antiferromagnetically-coupled laminated main pole (MP) formed on a substrate. The MP has two ferromagnetic multilayers, each comprising at least one FeCo/NiFe/FeCo ferromagnetic trilayer, antiferromagnetically coupled across an antiferromagnetically coupling (AFC) film consisting essentially of ruthenium (Ru). The MP has a NiFe layer directly above the AFC film, on the side of the AFC film opposite the side facing the substrate, and in contact with the Ru AFC film and the lower FeCo layer of the upper multilayer. There is no NiFe layer directly below the Ru AFC film so the side of the AFC film facing the substrate is in direct contact with the upper FeCo layer of the lower multilayer.
摘要翻译：垂直磁记录写头具有形成在基板上的改进的反铁磁耦合叠层主极（MP）。 MP具有两个铁磁多层，每层包含至少一个FeCo / NiFe / FeCo铁磁性三层膜，反向铁磁耦合在基本上由钌（Ru）组成的反铁磁耦合（AFC）膜上。 MP具有在AFC膜正上方的NiFe层，在与基板相对的一侧的AFC膜侧，与Ru AFC膜和上部多层的下部FeCo层接触。在Ru AFC膜的正下方没有NiFe层，因此面向衬底的AFC膜的侧面与下部多层的上部FeCo层直接接触。

6. 发明申请

US20120156522A1 CURRENT-PERPENDICULAR-TO-THE-PLANE (CPP) MAGNETORESISTIVE (MR) SENSOR WITH IMPROVED SEED LAYER STRUCTURE FOR HARD BIAS LAYER 有权
标题翻译：具有改进的用于硬偏层的种子层结构的电流 - 平面（CPP）磁传感器（MR）传感器
公开(公告)号：US20120156522A1
公开(公告)日：2012-06-21
申请号：US12969466
申请日：2010-12-15
申请人： Stefan Maat , Alexander M. Zeltser
发明人： Stefan Maat , Alexander M. Zeltser
IPC分类号： G11B5/39
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B2005/3996 , Y10T428/1121
摘要： A current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor has an improved seed layer structure for the ferromagnetic hard (high coercivity) bias layer that is used to longitudinally bias the sensor's free ferromagnetic layer. The seed layer structure is a trilayer consisting of a first seed layer of tantalum (Ta), a second seed layer of one or both titanium (Ti) and Ti-oxide on and in contact with the Ta layer, and a third seed layer of tungsten (W) on and in contact with the second seed layer.
摘要翻译：电流垂直于平面（CPP）磁阻（MR）传感器具有用于铁磁硬（高矫顽力）偏置层的改进的种子层结构，其用于纵向偏置传感器的自由铁磁层。种子层结构是由钽（Ta）的第一种子层，与Ta层接触并与Ta层接触的钛（Ti）和Ti氧化物中的一种或两种的第二晶种层组成的三层，以及第三种子层钨（W）与第二种子层接触并接触。

7. 发明申请

US20120161263A1 Current perpendicular to plane (CPP) magnetoresistive sensor having dual composition hard bias layer 审中-公开
标题翻译：电流垂直于具有双组分硬偏置层的平面（CPP）磁阻传感器
公开(公告)号：US20120161263A1
公开(公告)日：2012-06-28
申请号：US12930131
申请日：2010-12-28
申请人： Stefan Maat , Alexander M. Zeltser
发明人： Stefan Maat , Alexander M. Zeltser
IPC分类号： H01L43/10
CPC分类号： H01L43/08 , B82Y25/00 , G01R33/093 , G11B5/3932 , H01F10/123 , H01F10/325 , H01F10/3254 , H01L43/10
摘要： A current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor has a dual composition hard bias layer structure that is used to longitudinally bias the sensor's free ferromagnetic layer. The dual composition hard bias layer structure is composed of first layer of CoPt, having high anisotropy compared to the second layer. The second layer, composed of CoFe, has a higher magnetization compared to the first layer. The resulting dual hard bias layer structure exhibits high values of coercivity and squareness while maintaining a reduced sensor thickness compared to sensors of the prior art.
摘要翻译：电流垂直平面（CPP）磁阻（MR）传感器具有双组分硬偏置层结构，用于纵向偏置传感器的自由铁磁层。双组分硬偏压层结构由第一层CoPt组成，与第二层相比具有高各向异性。由CoFe组成的第二层与第一层相比具有较高的磁化强度。与现有技术的传感器相比，所得到的双重硬偏置层结构显示出高的矫顽力和矩形度值，同时保持了传感器厚度的降低。

8. 发明授权

US08958176B2 Write head pole laminate structure 有权
标题翻译：写头磁极层压结构
公开(公告)号：US08958176B2
公开(公告)日：2015-02-17
申请号：US12976993
申请日：2010-12-22
申请人： Jeffrey R. Childress , Alexander M. Zeltser
发明人： Jeffrey R. Childress , Alexander M. Zeltser
IPC分类号： G11B5/147 , G11B5/127 , G11B5/31
CPC分类号： G11B5/1278 , G11B5/147 , G11B5/3116 , Y10T428/115
摘要： The present invention generally relates to a write head pole laminate structure. The write head pole structure can include multiple multi-layer magnetic structures that are separated by a non-magnetic material that is amorphous or microcrystalline. Each multi-layer magnetic structure includes one or more first magnetic layers that are spaced from one or more second magnetic layers by a non-magnetic layer such that the one or more first magnetic layers are substantially identical to the one or more second magnetic layers. In such a design, the one or more second magnetic layers are antiparallel to the one or more first magnetic layers so that a zero total net magnetic moment is present for the multi-layer magnetic structure when current is removed from the write head pole.
摘要翻译：本发明一般涉及一种书写磁头极板层叠结构。写头磁极结构可以包括被非晶或微晶的非磁性材料隔开的多个多层磁结构。每个多层磁性结构包括一个或多个第一磁性层，其通过非磁性层与一个或多个第二磁性层间隔开，使得一个或多个第一磁性层基本上与一个或多个第二磁性层相同。在这种设计中，一个或多个第二磁性层与一个或多个第一磁性层反平行，使得当电流从写入磁头极移除时，多层磁性结构存在零总的净磁矩。

9. 发明授权

US08675316B2 Magnetoresistive sensor with sub-layering of pinned layers 有权
标题翻译：磁阻传感器，分层钉扎层
公开(公告)号：US08675316B2
公开(公告)日：2014-03-18
申请号：US12101761
申请日：2008-04-11
申请人： Wen-yaung Lee , Daniele Mauri , Alexander M. Zeltser
发明人： Wen-yaung Lee , Daniele Mauri , Alexander M. Zeltser
IPC分类号： G11B5/33
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , B82Y40/00 , G01R33/098 , G11B5/3906 , H01F10/3254 , H01F10/3272 , H01F41/307 , H01L43/08
摘要： Methods and apparatus provide magnetoresistance sensors. A tunneling magnetoresistance (TMR) sensor may include configurations that are arranged as a top TMR stack. One of two antiparallel layers of pinned layers within the TMR stack may be subdivided by a spacer layer. Tantalum may form the spacer layer that is inserted in a reference layer, which is one of the pinned layers and is located between a barrier layer and an antiparallel coupling layer that enables antiparallel coupling between the reference layer and a keeper layer of the pinned layers. The barrier layer deposited on a free layer of the TMR stacks separates the pinned layers from the free layer such that TMR effects are detectable with the sensors.
摘要翻译：方法和装置提供磁阻传感器。隧道磁阻（TMR）传感器可以包括被布置为顶部TMR堆叠的配置。 TMR堆叠中的钉扎层的两个反平行层之一可以被间隔层细分。钽可以形成插入到参考层中的间隔层，该参考层是被钉扎层之一，并且位于阻挡层和反平行耦合层之间，其使参考层和被钉扎层的保持层之间能够反平行耦合。沉积在TMR堆叠的自由层上的阻挡层将被钉扎层与自由层分离，使得TMR效应可以用传感器检测。

10. 发明授权

US07646569B2 Pinned layer in magnetoresistive sensor 有权
标题翻译：磁阻传感器中的固定层
公开(公告)号：US07646569B2
公开(公告)日：2010-01-12
申请号：US11458896
申请日：2006-07-20
申请人： Jinshan Li , Kouichi Nishioka , Satoshi Shigematsu , Alexander M. Zeltser
发明人： Jinshan Li , Kouichi Nishioka , Satoshi Shigematsu , Alexander M. Zeltser
IPC分类号： G11B5/127
CPC分类号： G11B5/39
摘要： A method for manufacturing a magnetic read sensor and a magnetic read sensor are provided. In one embodiment of the invention, the method includes providing a seed layer disposed over a substrate of the magnetic read sensor, providing a free layer disposed over a seed layer and providing a spacer layer disposed over the free layer. The method further includes providing a pinned layer disposed over the spacer layer. In one embodiment, the pinned layer includes cobalt and iron, wherein the concentration of iron in the pinned layer is between 33 and 37 atomic percent (at. %). The method further includes providing a pinning layer disposed over the pinned layer, wherein the pinning layer is in contact with the pinned layer.
摘要翻译：提供了一种用于制造磁读取传感器和磁读取传感器的方法。在本发明的一个实施例中，该方法包括提供设置在磁读取传感器的衬底上的种子层，提供设置在种子层上的自由层并提供设置在自由层之上的间隔层。该方法还包括提供设置在间隔层上方的钉扎层。在一个实施例中，钉扎层包括钴和铁，其中钉扎层中的铁的浓度为33至37原子百分比（原子％）。该方法还包括提供设置在钉扎层上方的钉扎层，其中钉扎层与钉扎层接触。

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