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1. 发明授权

US08501330B2 Perpendicular magnetic recording media with magnetic anisotropy gradient and local exchange coupling 有权
公开(公告)号：US08501330B2
公开(公告)日：2013-08-06
申请号：US13270715
申请日：2011-10-11
申请人： Shaoping Li , Kaizhong Gao , Lei Wang , Wenzhong Zhu , Xiaobin Wang
发明人： Shaoping Li , Kaizhong Gao , Lei Wang , Wenzhong Zhu , Xiaobin Wang
IPC分类号： G11B5/66 , G11B5/65
CPC分类号： G11B5/667 , B82Y10/00 , G11B5/64 , G11B5/65 , G11B5/656 , G11B5/66 , G11B5/743 , G11B5/746 , G11B5/82 , G11B2005/0029 , H01F41/0206 , Y10S428/90 , Y10T29/4902 , Y10T29/49032 , Y10T29/49067 , Y10T428/12458 , Y10T428/12465 , Y10T428/12931 , Y10T428/26 , Y10T428/265
摘要： A perpendicular magnetic recording medium adapted for high recording density and high data recording rate comprises a non-magnetic substrate having at least one surface with a layer stack formed thereon, the layer stack including a perpendicular recording layer containing a plurality of columnar-shaped magnetic grains extending perpendicularly to the substrate surface for a length, with a first end distal the surface and a second end proximal the surface, wherein each of the magnetic grains has: (1) a gradient of perpendicular magnetic anisotropy field Hk extending along its length between the first end and second ends; and (2) predetermined local exchange coupling strengths along the length.

2. 发明申请

US20120028078A1 Perpendicular Magnetic Recording Media with Magnetic Anisotropy Gradient and Local Exchange Coupling 有权
标题翻译：具有磁各向异性梯度和局部交换耦合的垂直磁记录介质
公开(公告)号：US20120028078A1
公开(公告)日：2012-02-02
申请号：US13270715
申请日：2011-10-11
申请人： Shaoping Li , Kaizhong Gao , Lei Wang , Wenzhong Zhu , Xiaobin Wang
发明人： Shaoping Li , Kaizhong Gao , Lei Wang , Wenzhong Zhu , Xiaobin Wang
IPC分类号： G11B5/66 , G11B5/65
CPC分类号： G11B5/667 , B82Y10/00 , G11B5/64 , G11B5/65 , G11B5/656 , G11B5/66 , G11B5/743 , G11B5/746 , G11B5/82 , G11B2005/0029 , H01F41/0206 , Y10S428/90 , Y10T29/4902 , Y10T29/49032 , Y10T29/49067 , Y10T428/12458 , Y10T428/12465 , Y10T428/12931 , Y10T428/26 , Y10T428/265
摘要： A perpendicular magnetic recording medium adapted for high recording density and high data recording rate comprises a non-magnetic substrate having at least one surface with a layer stack formed thereon, the layer stack including a perpendicular recording layer containing a plurality of columnar-shaped magnetic grains extending perpendicularly to the substrate surface for a length, with a first end distal the surface and a second end proximal the surface, wherein each of the magnetic grains has: (1) a gradient of perpendicular magnetic anisotropy field Hk extending along its length between the first end and second ends; and (2) predetermined local exchange coupling strengths along the length.
摘要翻译：适用于高记录密度和高数据记录速率的垂直磁记录介质包括具有至少一个具有在其上形成层叠层的表面的非磁性基板，该层堆叠包括垂直记录层，该垂直记录层包含多个柱状磁性颗粒垂直于衬底表面延伸一段长度，第一端远离表面，接近表面的第二端，其中每个磁性颗粒具有：（1）垂直磁各向异性场Hk沿其长度延伸的梯度第一端和第二端; 和（2）沿着长度的预定局部交换耦合强度。

3. 发明授权

US08048545B2 Perpendicular magnetic recording media with magnetic anisotropy gradient and local exchange coupling 有权
标题翻译：具有磁各向异性梯度和局部交换耦合的垂直磁记录介质
公开(公告)号：US08048545B2
公开(公告)日：2011-11-01
申请号：US12962553
申请日：2010-12-07
申请人： Shaoping Li , Kaizhong Gao , Lei Wang , Wenzhong Zhu , Xiaobin Wang
发明人： Shaoping Li , Kaizhong Gao , Lei Wang , Wenzhong Zhu , Xiaobin Wang
IPC分类号： G11B5/66 , H01F13/00
CPC分类号： G11B5/667 , B82Y10/00 , G11B5/64 , G11B5/65 , G11B5/656 , G11B5/66 , G11B5/743 , G11B5/746 , G11B5/82 , G11B2005/0029 , H01F41/0206 , Y10S428/90 , Y10T29/4902 , Y10T29/49032 , Y10T29/49067 , Y10T428/12458 , Y10T428/12465 , Y10T428/12931 , Y10T428/26 , Y10T428/265
摘要： A perpendicular magnetic recording medium adapted for high recording density and high data recording rate comprises a non-magnetic substrate having at least one surface with a layer stack formed thereon, the layer stack including a perpendicular recording layer containing a plurality of columnar-shaped magnetic grains extending perpendicularly to the substrate surface for a length, with a first end distal the surface and a second end proximal the surface, wherein each of the magnetic grains has: (1) a gradient of perpendicular magnetic anisotropy field Hk extending along its length between the first end and second ends; and (2) predetermined local exchange coupling strengths along the length.
摘要翻译：适用于高记录密度和高数据记录速率的垂直磁记录介质包括具有至少一个具有在其上形成层叠层的表面的非磁性基板，该层堆叠包括垂直记录层，该垂直记录层包含多个柱状磁性颗粒垂直于衬底表面延伸一段长度，第一端远离表面，接近表面的第二端，其中每个磁性颗粒具有：（1）垂直磁各向异性场Hk沿其长度延伸的梯度第一端和第二端; 和（2）沿着长度的预定局部交换耦合强度。

4. 发明授权

US07846564B2 Perpendicular magnetic recording media with magnetic anisotropy/coercivity gradient and local exchange coupling 有权
标题翻译：具有磁各向异性/矫顽力梯度和局部交换耦合的垂直磁记录介质
公开(公告)号：US07846564B2
公开(公告)日：2010-12-07
申请号：US11235208
申请日：2005-09-27
申请人： Shaoping Li , Kaizhong Gao , Lei Wang , Wenzhong Zhu , Xiaobin Wang
发明人： Shaoping Li , Kaizhong Gao , Lei Wang , Wenzhong Zhu , Xiaobin Wang
IPC分类号： G11B5/65
CPC分类号： G11B5/667 , B82Y10/00 , G11B5/64 , G11B5/65 , G11B5/656 , G11B5/66 , G11B5/743 , G11B5/746 , G11B5/82 , G11B2005/0029 , H01F41/0206 , Y10S428/90 , Y10T29/4902 , Y10T29/49032 , Y10T29/49067 , Y10T428/12458 , Y10T428/12465 , Y10T428/12931 , Y10T428/26 , Y10T428/265
摘要： A perpendicular magnetic recording medium adapted for high recording density and high data recording rate comprises a non-magnetic substrate having at least one surface with a layer stack formed thereon, the layer stack including a perpendicular recording layer containing a plurality of columnar-shaped magnetic grains extending perpendicularly to the substrate surface for a length, with a first end distal the surface and a second end proximal the surface, wherein each of the magnetic grains has: (1) a gradient of perpendicular magnetic anisotropy field Hk extending along its length between the first end and second ends; and (2) predetermined local exchange coupling strengths along the length.
摘要翻译：适用于高记录密度和高数据记录速率的垂直磁记录介质包括具有至少一个具有在其上形成层叠层的表面的非磁性基板，该层堆叠包括垂直记录层，该垂直记录层包含多个柱状磁性颗粒垂直于衬底表面延伸一段长度，第一端远离表面，接近表面的第二端，其中每个磁性颗粒具有：（1）垂直磁各向异性场Hk沿其长度延伸的梯度第一端和第二端; 和（2）沿着长度的预定局部交换耦合强度。

5. 发明申请

US20110076516A1 Perpendicular Magnetic Recording Media with Magnetic Anisotropy Gradient and Local Exchange Coupling 有权
标题翻译：具有磁各向异性梯度和局部交换耦合的垂直磁记录介质
公开(公告)号：US20110076516A1
公开(公告)日：2011-03-31
申请号：US12962553
申请日：2010-12-07
申请人： Shaoping Li , Kaizhong Gao , Lei Wang , Wenzhong Zhu , Xiaobin Wang
发明人： Shaoping Li , Kaizhong Gao , Lei Wang , Wenzhong Zhu , Xiaobin Wang
IPC分类号： G11B5/66 , H01F13/00
CPC分类号： G11B5/667 , B82Y10/00 , G11B5/64 , G11B5/65 , G11B5/656 , G11B5/66 , G11B5/743 , G11B5/746 , G11B5/82 , G11B2005/0029 , H01F41/0206 , Y10S428/90 , Y10T29/4902 , Y10T29/49032 , Y10T29/49067 , Y10T428/12458 , Y10T428/12465 , Y10T428/12931 , Y10T428/26 , Y10T428/265
摘要： A perpendicular magnetic recording medium adapted for high recording density and high data recording rate comprises a non-magnetic substrate having at least one surface with a layer stack formed thereon, the layer stack including a perpendicular recording layer containing a plurality of columnar-shaped magnetic grains extending perpendicularly to the substrate surface for a length, with a first end distal the surface and a second end proximal the surface, wherein each of the magnetic grains has: (1) a gradient of perpendicular magnetic anisotropy field Hk extending along its length between the first end and second ends; and (2) predetermined local exchange coupling strengths along the length.
摘要翻译：适用于高记录密度和高数据记录速率的垂直磁记录介质包括具有至少一个具有在其上形成层叠层的表面的非磁性基板，该层堆叠包括垂直记录层，该垂直记录层包含多个柱状磁性颗粒垂直于衬底表面延伸一段长度，第一端远离表面，接近表面的第二端，其中每个磁性颗粒具有：（1）垂直磁各向异性场Hk沿其长度延伸的梯度第一端和第二端; 和（2）沿着长度的预定局部交换耦合强度。

6. 发明申请

US20070072011A1 Perpendicular magnetic recording media with magnetic anisotropy/coercivity gradient and local exchange coupling 有权
标题翻译：具有磁各向异性/矫顽力梯度和局部交换耦合的垂直磁记录介质
公开(公告)号：US20070072011A1
公开(公告)日：2007-03-29
申请号：US11235208
申请日：2005-09-27
申请人： Shaoping Li , Kaizhong Gao , Lei Wang , Wenzhong Zhu , Xiaobin Wang
发明人： Shaoping Li , Kaizhong Gao , Lei Wang , Wenzhong Zhu , Xiaobin Wang
IPC分类号： G11B5/65
CPC分类号： G11B5/667 , B82Y10/00 , G11B5/64 , G11B5/65 , G11B5/656 , G11B5/66 , G11B5/743 , G11B5/746 , G11B5/82 , G11B2005/0029 , H01F41/0206 , Y10S428/90 , Y10T29/4902 , Y10T29/49032 , Y10T29/49067 , Y10T428/12458 , Y10T428/12465 , Y10T428/12931 , Y10T428/26 , Y10T428/265
摘要： A perpendicular magnetic recording medium adapted for high recording density and high data recording rate comprises a non-magnetic substrate having at least one surface with a layer stack formed thereon, the layer stack including a perpendicular recording layer containing a plurality of columnar-shaped magnetic grains extending perpendicularly to the substrate surface for a length, with a first end distal the surface and a second end proximal the surface, wherein each of the magnetic grains has: (1) a gradient of perpendicular magnetic coercivity Hk extending along its length between the first end and second ends; and (2) predetermined local exchange coupling strengths along the length.
摘要翻译：适用于高记录密度和高数据记录速率的垂直磁记录介质包括具有至少一个具有在其上形成层叠层的表面的非磁性基板，该层堆叠包括垂直记录层，该垂直记录层包含多个柱状磁性颗粒垂直于衬底表面延伸一段长度，第一端远离表面，靠近表面的第二端，其中每个磁性颗粒具有：（1）垂直磁矫顽磁力梯度H SUB >沿其长度在第一端部和第二端部之间延伸; 和（2）沿着长度的预定局部交换耦合强度。

7. 发明授权

US07201977B2 Anti-ferromagnetically coupled granular-continuous magnetic recording media 有权
标题翻译：反铁磁耦合颗粒连续磁记录介质
公开(公告)号：US07201977B2
公开(公告)日：2007-04-10
申请号：US10806114
申请日：2004-03-23
申请人： Shaoping Li , Kaizhong Gao , Lei Wang , Wenzhong Zhu
发明人： Shaoping Li , Kaizhong Gao , Lei Wang , Wenzhong Zhu
IPC分类号： G11B5/66
CPC分类号： G11B5/732 , G11B5/653 , G11B5/656 , G11B5/66 , G11B5/667 , G11B5/725
摘要： An anti-ferromagnetically coupled, granular-continuous (“AFC-GC”) magnetic recording medium having increased thermal stability, writability, and signal-to-medium noise ratio (“SMNR”), comprising a layer stack including, in sequence from a surface of a non-magnetic substrate: (a) a continuous ferromagnetic stabilizing layer; (b) a non-magnetic spacer layer; and (c) a granular ferromagnetic recording layer; wherein: (i) the continuous ferromagnetic stabilizing and granular ferromagnetic recording layers are anti-ferromagnetically coupled across the non-magnetic spacer layer, the amount of anti-ferromagnetic coupling preselected to ensure magnetic relaxation after writing; (ii) lateral interactions in the granular, ferromagnetic recording layer are substantially completely eliminated or suppressed; and (iii) the exchange coupling strength in the continuous, ferromagnetic stabilizing layer is preselected to be slightly larger than the strength of the anti-ferromagnetic coupling provided by the non-magnetic spacer layer to thereby enhance thermal stability of the recording bits.
摘要翻译：具有增加的热稳定性，可写性和信噪比（“SMNR”）的反铁磁耦合的粒状连续（“AFC-GC”）磁记录介质，包括层叠，其包括从非磁性表面

8. 发明申请

US20050214585A1 Anti-ferromagnetically coupled granular-continuous magnetic recording media 有权
标题翻译：反铁磁耦合颗粒连续磁记录介质
公开(公告)号：US20050214585A1
公开(公告)日：2005-09-29
申请号：US10806114
申请日：2004-03-23
申请人： Shaoping Li , Kaizhong Gao , Lei Wang , Wenzhong Zhu
发明人： Shaoping Li , Kaizhong Gao , Lei Wang , Wenzhong Zhu
IPC分类号： G11B5/64 , G11B5/66 , G11B5/72 , G11B5/725 , G11B5/73
CPC分类号： G11B5/732 , G11B5/653 , G11B5/656 , G11B5/66 , G11B5/667 , G11B5/725
摘要： An anti-ferromagnetically coupled, granular-continuous (“AFC-GC”) magnetic recording medium having increased thermal stability, writability, and signal-to-medium noise ratio (“SMNR”), comprising a layer stack including, in sequence from a surface of a non-magnetic substrate: (a) a continuous ferromagnetic stabilizing layer; (b) a non-magnetic spacer layer; and (c) a granular ferromagnetic recording layer; wherein: (i) the continuous ferromagnetic stabilizing and granular ferromagnetic recording layers are anti-ferromagnetically coupled across the non-magnetic spacer layer, the amount of anti-ferromagnetic coupling preselected to ensure magnetic relaxation after writing; (ii) lateral interactions in the granular, ferromagnetic recording layer are substantially completely eliminated or suppressed; and (iii) the exchange coupling strength in the continuous, ferromagnetic stabilizing layer is preselected to be slightly larger than the strength of the anti-ferromagnetic coupling provided by the non-magnetic spacer layer to thereby enhance thermal stability of the recording bits.
摘要翻译：具有增加的热稳定性，可写性和信噪比（“SMNR”）的反铁磁耦合的粒状连续（“AFC-GC”）磁记录介质，包括层叠，其包括从非磁性基板的表面：（a）连续的铁磁稳定层; （b）非磁性间隔层; 和（c）粒状铁磁记录层; 其中：（i）连续的铁磁稳定和粒状铁磁记录层跨过非磁性间隔层进行反铁磁耦合，预先选择反铁磁性耦合量以确保写入后的磁弛豫; （ii）颗粒状铁磁记录层中的横向相互作用基本上完全消除或抑制; 并且（iii）连续的铁磁稳定层中的交换耦合强度被预先选择为略大于由非磁性间隔层提供的反铁磁耦合的强度，从而提高记录位的热稳定性。

9. 发明授权

US07333294B1 Perpendicular writer with reduced side track writing 有权
标题翻译：垂直作者，减少侧轨写作
公开(公告)号：US07333294B1
公开(公告)日：2008-02-19
申请号：US10323507
申请日：2002-12-18
申请人： Shaoping Li , Wenzhong Zhu , Lei Wang , Rick Michel , David Kaiser , Dean C. Palmer , Taras G. Pokhil , Ned Tabat
发明人： Shaoping Li , Wenzhong Zhu , Lei Wang , Rick Michel , David Kaiser , Dean C. Palmer , Taras G. Pokhil , Ned Tabat
IPC分类号： G11B5/147
CPC分类号： G11B5/1278
摘要： A disc drive head that includes a shared pole having high magnetic anisotropy layer which locally decreases the amplitude of dynamic field excitation of the shared pole at the write operation frequency to reduce side-writing of a disc media during a write operation.
摘要翻译：一种盘驱动头，其包括具有高磁各向异性层的共享极，其在写入操作频率下局部地减小共享极的动态场激励的幅度，以减少在写操作期间盘介质的写入。

10. 发明授权

US08508005B2 STRAM with compensation element and method of making the same 失效
标题翻译： STRAM具有补偿元素和制作方法
公开(公告)号：US08508005B2
公开(公告)日：2013-08-13
申请号：US13477200
申请日：2012-05-22
申请人： Kaizhong Gao , Haiwen Xi , Wenzhong Zhu , Olle Heinonen
发明人： Kaizhong Gao , Haiwen Xi , Wenzhong Zhu , Olle Heinonen
IPC分类号： H01L21/66 , G01R33/02 , G01C11/14
CPC分类号： G01R33/093 , B82Y25/00 , G01R33/1284 , G11C11/161 , G11C11/1675
摘要： A spin-transfer torque memory unit includes a free magnetic layer having a magnetic easy axis; a reference magnetic element having a magnetization orientation that is pinned in a reference direction; an electrically insulating and non-magnetic tunneling barrier layer separating the free magnetic layer from the magnetic reference element; and a compensation element adjacent to the free magnetic layer. The compensation element applies a bias field on the magnetization orientation of the free magnetic layer. The bias field is formed of a first vector component parallel to the easy axis of the free magnetic layer and a second vector component orthogonal to the easy axis of the free magnetic layer. The bias field reduces a write current magnitude required to switch the direction of the magnetization orientation of the free magnetic layer.
摘要翻译：自旋转移力矩存储单元包括具有易磁化轴的自由磁性层; 具有被固定在参考方向上的磁化取向的参考磁性元件; 将自由磁性层与磁性参考元件分离的电绝缘和非磁性隧道势垒层; 以及与自由磁性层相邻的补偿元件。补偿元件对自由磁性层的磁化取向施加偏置场。偏置场由平行于自由磁性层的容易轴的第一矢量分量和与自由磁性层的容易轴正交的第二矢量分量形成。偏置场减小了切换自由磁性层的磁化取向方向所需的写入电流幅度。

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