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1. 发明申请

US20100214693A1 PERPENDICULAR MAGNETIC RECORDING SYSTEM WITH MAGNETIC PRECESSION FOR FAST SWITCHING OF PERPENDICULAR WRITE POLE MAGNETIZATION 有权
标题翻译：具有磁性预测功能的全频磁记录系统，用于快速切换全频写波长磁化
公开(公告)号：US20100214693A1
公开(公告)日：2010-08-26
申请号：US12391242
申请日：2009-02-23
申请人： John Thomas Contreras , Yimin Hsu , Manfred Ernst Schabes , Xinzhi Xing
发明人： John Thomas Contreras , Yimin Hsu , Manfred Ernst Schabes , Xinzhi Xing
IPC分类号： G11B5/127
CPC分类号： G11B5/3123 , G11B5/02 , G11B5/1278 , G11B2005/0005
摘要： A perpendicular magnetic recording system has a write head with a main perpendicular write pole connected to a yoke with first and second electrical coils. The first coil is wrapped around the yoke on one side of the main pole, and the second coil is wrapped around the yoke on the other side of the main pole. The first end of each coil is connected to a respective terminal. The second ends of the two coils are connected together and connected to a common terminal. A lead-time circuit is connected between the common terminal and the first end of one of the coils. Immediately after the direction of write current is switched by the write driver, the lead-time circuit causes the current in one of the coils to lead the current in the other coil. The current displacement between the two coils creates a precession of the magnetic flux reversal, thereby reducing the switching time of the write head.
摘要翻译：垂直磁记录系统具有写头，其具有与第一和第二电线圈的轭连接的主垂直写极。第一线圈缠绕在主极的一侧上的轭架上，并且第二线圈缠绕在主极的另一侧上的轭。每个线圈的第一端连接到相应的端子。两个线圈的第二端连接在一起并连接到公共端子。在公共端子和一个线圈的第一端之间连接有引线时间电路。在写入驱动器切换写入电流的方向之后，引线时间电路使一个线圈中的电流导致另一个线圈中的电流。两个线圈之间的电流位移产生了磁通反转的进动，从而减小了写入头的切换时间。

2. 发明授权

US08139319B2 Perpendicular magnetic recording system with magnetic precession for fast switching of perpendicular write pole magnetization 有权
标题翻译：具有磁性进动的垂直磁记录系统，用于快速切换垂直写磁极磁化
公开(公告)号：US08139319B2
公开(公告)日：2012-03-20
申请号：US12391242
申请日：2009-02-23
申请人： John Thomas Contreras , Yimin Hsu , Manfred Ernst Schabes , Xinzhi Xing
发明人： John Thomas Contreras , Yimin Hsu , Manfred Ernst Schabes , Xinzhi Xing
IPC分类号： G11B5/127
CPC分类号： G11B5/3123 , G11B5/02 , G11B5/1278 , G11B2005/0005
摘要： A perpendicular magnetic recording system has a write head with a main perpendicular write pole connected to a yoke with first and second electrical coils. The first coil is wrapped around the yoke on one side of the main pole, and the second coil is wrapped around the yoke on the other side of the main pole. The first end of each coil is connected to a respective terminal. The second ends of the two coils are connected together and connected to a common terminal. A lead-time circuit is connected between the common terminal and the first end of one of the coils. Immediately after the direction of write current is switched by the write driver, the lead-time circuit causes the current in one of the coils to lead the current in the other coil. The current displacement between the two coils creates a precession of the magnetic flux reversal, thereby reducing the switching time of the write head.
摘要翻译：垂直磁记录系统具有写头，其具有与第一和第二电线圈的轭连接的主垂直写极。第一线圈缠绕在主极的一侧上的轭架上，并且第二线圈缠绕在主极的另一侧上的轭。每个线圈的第一端连接到相应的端子。两个线圈的第二端连接在一起并连接到公共端子。在公共端子和一个线圈的第一端之间连接有引线时间电路。在写入驱动器切换写入电流的方向之后，引线时间电路使一个线圈中的电流导致另一个线圈中的电流。两个线圈之间的电流位移产生了磁通反转的进动，从而减小了写入头的切换时间。

3. 发明授权

US08116031B2 Perpendicular magnetic recording system with helical write coil and auxiliary coil for fast switching of write pole magnetization 有权
标题翻译：具有螺旋写入线圈和辅助线圈的垂直磁记录系统，用于快速切换写磁极磁化
公开(公告)号：US08116031B2
公开(公告)日：2012-02-14
申请号：US12419278
申请日：2009-04-06
申请人： Michael Alex , John Thomas Contreras , Manfred Ernst Schabes , Xinzhi Xing
发明人： Michael Alex , John Thomas Contreras , Manfred Ernst Schabes , Xinzhi Xing
IPC分类号： G11B5/17
CPC分类号： G11B5/3123 , G11B5/1278 , G11B2005/001
摘要： A perpendicular magnetic recording system has a write head having a main helical coil (the write coil) and main pole (the write pole) that directs write flux in a direction perpendicular to the recording layer in the magnetic recording medium, and an auxiliary coil and auxiliary pole that injects magnetic flux into the write pole at an angle to the primary or perpendicular axis of the write pole. The auxiliary coil is preferably a helical coil wrapped around the auxiliary pole. The additional flux from the auxiliary pole, which is injected non-parallel to the primary magnetization of the write pole, exerts a relatively large torque on the magnetization of the write pole, thereby facilitating magnetization reversal of the write pole. Electrical circuitry is connected to the main coil and the auxiliary coil to generate the auxiliary flux simultaneous with the switching of the magnetization of the write pole.
摘要翻译：垂直磁记录系统具有写磁头，该写头具有主磁螺旋线圈（写线圈）和主磁极（写磁极），其在与磁记录介质中的记录层垂直的方向上引导写磁通，辅助线圈和辅助极以与写极的主轴或垂直轴成一定角度注入磁极。辅助线圈优选为缠绕在辅助极上的螺旋线圈。来自辅助极的不平行于写入磁极的一次磁化的附加磁通对写入磁极的磁化施加相对较大的转矩，从而促进写入极的磁化反转。电路连接到主线圈和辅助线圈，以与写入极的磁化转换同时产生辅助通量。

4. 发明申请

US20100254041A1 PERPENDICULAR MAGNETIC RECORDING SYSTEM WITH HELICAL WRITE COIL AND AUXILIARY COIL FOR FAST SWITCHING OF WRITE POLE MAGNETIZATION 有权
标题翻译：具有螺旋线圈和辅助线圈的永磁磁记录系统，用于快速切换写入磁场
公开(公告)号：US20100254041A1
公开(公告)日：2010-10-07
申请号：US12419278
申请日：2009-04-06
申请人： Michael Alex , John Thomas Contreras , Manfred Ernst Schabes , Xinzhi Xing
发明人： Michael Alex , John Thomas Contreras , Manfred Ernst Schabes , Xinzhi Xing
IPC分类号： G11B5/17
CPC分类号： G11B5/3123 , G11B5/1278 , G11B2005/001
摘要： A perpendicular magnetic recording system has a write head having a main helical coil (the write coil) and main pole (the write pole) that directs write flux in a direction perpendicular to the recording layer in the magnetic recording medium, and an auxiliary coil and auxiliary pole that injects magnetic flux into the write pole at an angle to the primary or perpendicular axis of the write pole. The auxiliary coil is preferably a helical coil wrapped around the auxiliary pole. The additional flux from the auxiliary pole, which is injected non-parallel to the primary magnetization of the write pole, exerts a relatively large torque on the magnetization of the write pole, thereby facilitating magnetization reversal of the write pole. Electrical circuitry is connected to the main coil and the auxiliary coil to generate the auxiliary flux simultaneous with the switching of the magnetization of the write pole.
摘要翻译：垂直磁记录系统具有写磁头，该写头具有主磁螺旋线圈（写线圈）和主磁极（写磁极），其在与磁记录介质中的记录层垂直的方向上引导写磁通，辅助线圈和辅助极以与写极的主轴或垂直轴成一定角度注入磁极。辅助线圈优选为缠绕在辅助极上的螺旋线圈。来自辅助极的不平行于写入磁极的一次磁化的附加磁通对写入磁极的磁化施加相对较大的转矩，从而促进写入极的磁化反转。电路连接到主线圈和辅助线圈，以与写入极的磁化转换同时产生辅助通量。

5. 发明授权

US08446690B2 Perpendicular magnetic recording write head with spin torque oscillator for fast switching of write pole magnetization 有权
标题翻译：垂直磁记录写头具有自旋转矩振荡器，可快速切换写磁极磁化
公开(公告)号：US08446690B2
公开(公告)日：2013-05-21
申请号：US12542677
申请日：2009-08-17
申请人： Michael Alex , John Thomas Contreras , Manfred Ernst Schabes , Xinzhi Xing
发明人： Michael Alex , John Thomas Contreras , Manfred Ernst Schabes , Xinzhi Xing
IPC分类号： G11B5/17
CPC分类号： G11B5/314 , G11B5/02 , G11B5/1278 , G11B5/3146 , G11B2005/0005
摘要： A perpendicular magnetic recording write head that a write pole, an electrically conductive coil coupled to the write pole for generating magnetic flux in the write pole in the presence of electrical write current, and a spin torque oscillator (STO) that injects auxiliary magnetic flux to the write pole in a direction generally orthogonal to the write pole to facilitate magnetization switching of the write pole. The STO comprises a stack of layers including electrodes, a pinned ferromagnetic layer having a fixed, a free ferromagnetic layer having a magnetization free to rotate, and a nonmagnetic spacer layer between the pinned and free layers. The free layer may be oriented either substantially orthogonal to the write pole or substantially parallel to the write pole, in which latter embodiment a flux guide may be located between the free layer and the write pole for directing the auxiliary magnetic flux from the free layer to the write pole.
摘要翻译：垂直磁记录写头具有写极，耦合到写极的导电线圈，用于在存在写写电流的情况下在写极中产生磁通;以及自旋扭矩振荡器（STO），其将辅助磁通量注入到写磁极在与写磁极大致垂直的方向上，以方便写磁极的磁化切换。 STO包括一叠层，包括电极，具有固定磁化的钉扎铁磁层，具有自由旋转的磁化的自由铁磁层和在被钉扎层和自由层之间的非磁性间隔层。自由层可以取向为大致正交于写极或基本上平行于写极，其中后一实施例中的磁通引导件可以位于自由层和写极之间，用于将辅助磁通从自由层引导到写柱。

6. 发明申请

US20110038080A1 PERPENDICULAR MAGNETIC RECORDING WRITE HEAD WITH SPIN TORQUE OSCILLATOR FOR FAST SWITCHING OF WRITE POLE MAGNETIZATION 有权
标题翻译：具有旋转扭矩振荡器的磁性记录磁头，用于快速切换写入磁场
公开(公告)号：US20110038080A1
公开(公告)日：2011-02-17
申请号：US12542677
申请日：2009-08-17
申请人： Michael Alex , John Thomas Contreras , Manfred Ernst Schabes , Xinzhi Xing
发明人： Michael Alex , John Thomas Contreras , Manfred Ernst Schabes , Xinzhi Xing
IPC分类号： G11B5/17 , G11B5/127
CPC分类号： G11B5/314 , G11B5/02 , G11B5/1278 , G11B5/3146 , G11B2005/0005
摘要： A perpendicular magnetic recording write head that a write pole, an electrically conductive coil coupled to the write pole for generating magnetic flux in the write pole in the presence of electrical write current, and a spin torque oscillator (STO) that injects auxiliary magnetic flux to the write pole in a direction generally orthogonal to the write pole to facilitate magnetization switching of the write pole. The STO comprises a stack of layers including electrodes, a pinned ferromagnetic layer having a fixed, a free ferromagnetic layer having a magnetization free to rotate, and a nonmagnetic spacer layer between the pinned and free layers. The free layer may be oriented either substantially orthogonal to the write pole or substantially parallel to the write pole, in which latter embodiment a flux guide may be located between the free layer and the write pole for directing the auxiliary magnetic flux from the free layer to the write pole.
摘要翻译：垂直磁记录写头具有写极，耦合到写极的导电线圈，用于在存在写写电流的情况下在写极中产生磁通;以及自旋扭矩振荡器（STO），其将辅助磁通量注入到写磁极在与写磁极大致垂直的方向上，以方便写磁极的磁化切换。 STO包括一叠层，包括电极，具有固定磁化的钉扎铁磁层，具有自由旋转的磁化的自由铁磁层和在被钉扎层和自由层之间的非磁性间隔层。自由层可以取向为大致正交于写极或基本上平行于写极，其中后一实施例中的磁通引导件可以位于自由层和写极之间，用于将辅助磁通从自由层引导到写柱。

7. 发明授权

US08179633B2 Perpendicular magnetic recording system and write head with transverse auxiliary pole for fast switching of write pole magnetization 有权
标题翻译：垂直磁记录系统和带横向辅助极的写头，用于快速切换写磁极磁化
公开(公告)号：US08179633B2
公开(公告)日：2012-05-15
申请号：US12549410
申请日：2009-08-28
申请人： John Thomas Contreras , Manfred Ernst Schabes
发明人： John Thomas Contreras , Manfred Ernst Schabes
IPC分类号： G11B5/17
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/3146 , G11B2005/0005
摘要： A perpendicular magnetic recording system has a write head having a main coil (the write coil) and main pole (the write pole) that directs write flux in a direction perpendicular to the recording layer in the magnetic recording medium, and a transverse auxiliary pole (TAP) that injects auxiliary magnetic flux into the write pole at an angle to the primary or perpendicular axis of the write pole. The additional flux from the TAP, which is injected non-parallel to the primary magnetization of the write pole, exerts a torque on the magnetization of the write pole, thereby facilitating magnetization reversal of the write pole. The TAP is coupled to the main coil but not electrically connected to it. A separate passive coil, not electrically connected to the main coil, may be wrapped as a loop around the main pole and the TAP. Alternatively, the TAP may be located near one of the electrically conductive turns of the main coil.
摘要翻译：垂直磁记录系统具有写磁头，其具有主磁盘（写线圈）和主磁极（写磁极），该磁头在与磁记录介质中的记录层垂直的方向上引导写磁通，以及横向辅助极 TAP），其以与写入极的主轴线或垂直轴成一定角度将辅助磁通量注入到写入极。来自不平行于写入极的初级磁化的TAP的附加磁通量对写入磁极的磁化施加扭矩，从而促进写入磁极的磁化反转。 TAP耦合到主线圈但不与其电连接。不与主线圈电连接的单独的无源线圈可以围绕主极和TAP缠绕。或者，TAP可以位于主线圈的导电匝之一附近。

8. 发明申请

US20110051288A1 PERPENDICULAR MAGNETIC RECORDING SYSTEM AND WRITE HEAD WITH TRANSVERSE AUXILIARY POLE FOR FAST SWITCHING OF WRITE POLE MAGNETIZATION 有权
标题翻译：具有横向辅助功能的永磁磁记录系统和写入头，用于快速切换写入磁场
公开(公告)号：US20110051288A1
公开(公告)日：2011-03-03
申请号：US12549410
申请日：2009-08-28
申请人： John Thomas Contreras , Manfred Ernst Schabes
发明人： John Thomas Contreras , Manfred Ernst Schabes
IPC分类号： G11B15/64 , G11B5/33
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/3146 , G11B2005/0005
摘要： A perpendicular magnetic recording system has a write head having a main coil (the write coil) and main pole (the write pole) that directs write flux in a direction perpendicular to the recording layer in the magnetic recording medium, and a transverse auxiliary pole (TAP) that injects auxiliary magnetic flux into the write pole at an angle to the primary or perpendicular axis of the write pole. The additional flux from the TAP, which is injected non-parallel to the primary magnetization of the write pole, exerts a torque on the magnetization of the write pole, thereby facilitating magnetization reversal of the write pole. The TAP is coupled to the main coil but not electrically connected to it. A separate passive coil, not electrically connected to the main coil, may be wrapped as a loop around the main pole and the TAP. Alternatively, the TAP may be located near one of the electrically conductive turns of the main coil.
摘要翻译：垂直磁记录系统具有写磁头，其具有主磁盘（写线圈）和主磁极（写磁极），该磁头在与磁记录介质中的记录层垂直的方向上引导写磁通，以及横向辅助极 TAP），其以与写入极的主轴线或垂直轴成一定角度将辅助磁通量注入到写入极。来自不平行于写入极的初级磁化的TAP的附加磁通量对写入磁极的磁化施加扭矩，从而促进写入磁极的磁化反转。 TAP耦合到主线圈但不与其电连接。不与主线圈电连接的单独的无源线圈可以围绕主极和TAP缠绕。或者，TAP可以位于主线圈的导电匝之一附近。

9. 发明申请

US20100254042A1 PERPENDICULAR MAGNETIC RECORDING SYSTEM WITH AUXILIARY COIL AND CIRCUITRY FOR FAST SWITCHING OF WRITE POLE MAGNETIZATION 有权
标题翻译：具有辅助线圈的电磁记录系统和用于快速切换写入磁场的电路
公开(公告)号：US20100254042A1
公开(公告)日：2010-10-07
申请号：US12419281
申请日：2009-04-06
申请人： John Thomas Contreras , Manfred Ernst Schabes , David John Seagle
发明人： John Thomas Contreras , Manfred Ernst Schabes , David John Seagle
IPC分类号： G11B5/17
CPC分类号： G11B5/3123 , G11B5/1278 , G11B2005/001
摘要： A perpendicular magnetic recording system has a write head having a main coil (the write coil) and main pole (the write pole) that directs write flux in a direction perpendicular to the recording layer in the magnetic recording medium, and an auxiliary coil and auxiliary pole that injects magnetic flux into the write pole at an angle to the primary or perpendicular axis of the write pole. The additional flux from the auxiliary pole, which is injected non-parallel to the primary magnetization of the write pole, exerts a relatively large torque on the magnetization of the write pole, thereby facilitating magnetization reversal of the write pole. Electrical circuitry is connected to the main coil and the auxiliary coil to generate the auxiliary flux simultaneous with the switching of the magnetization of the write pole.
摘要翻译：垂直磁记录系统具有写磁头，其具有主磁盘（写线圈）和主磁极（写磁极），该磁头在与磁记录介质中的记录层垂直的方向上引导写磁通，辅助线圈和辅助磁极以与写入极的主轴线或垂直轴成一定角度将磁通量注入到写入极。来自辅助极的不平行于写入磁极的一次磁化的附加磁通对写入磁极的磁化施加相对较大的转矩，从而促进写入极的磁化反转。电路连接到主线圈和辅助线圈，以与写入极的磁化转换同时产生辅助通量。

10. 发明授权

US08351155B2 Perpendicular magnetic recording system with spin torque oscillator and control circuitry for fast switching of write pole magnetization 有权
标题翻译：具有自旋扭矩振荡器和控制电路的垂直磁记录系统，用于快速切换写磁极磁化
公开(公告)号：US08351155B2
公开(公告)日：2013-01-08
申请号：US12542682
申请日：2009-08-17
申请人： John Thomas Contreras , Manfred Ernst Schabes
发明人： John Thomas Contreras , Manfred Ernst Schabes
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , B82Y25/00 , G01R33/1284 , G11B5/3967 , G11B5/6064 , G11B2005/001 , H01F10/325 , H01F10/329
摘要： A perpendicular magnetic recording hard disk drive includes a write head with a write pole and an electrically conductive coil coupled to the write pole, a write driver for supplying electrical write current to the coil to generate magnetic flux in the write pole, a spin torque oscillator (STO) that injects auxiliary magnetic flux to the write pole to facilitate magnetization switching of the write pole, and STO control circuitry. Direct electrical current to the STO induces rotation of the magnetization of a free ferromagnetic layer in the STO, which generates the auxiliary magnetic flux. The STO control circuitry may be coupled to the STO via the electrical lines that connect the write driver to the write head, the lines that connect the read amplifier to the read head, or, if the disk drive is one with thermal fly-height control (TFC), the lines that connect the TFC circuitry with the heater.
摘要翻译：垂直磁记录硬盘驱动器包括具有写磁极的写头和耦合到写极的导电线圈，用于向线圈提供电写入电流以在写极中产生磁通的写驱动器，自旋转矩振荡器（STO），其向辅助磁极注入辅助磁通以便于写入极和STO控制电路的磁化切换。到STO的直接电流引起STO中的自由铁磁层的磁化的旋转，其产生辅助磁通量。 STO控制电路可以经由将写入驱动器连接到写入头的电线，连接读取放大器到读取头的线，或者如果磁盘驱动器是具有热飞跃高度控制（TFC），将TFC电路与加热器连接的线路。

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