公开(公告)号：US08035930B2

公开(公告)日：2011-10-11

申请号：US11906717

申请日：2007-10-03

申请人： Kenichi Takano ,  Lijie Guan ,  Yiu Liu ,  Joe Smyth ,  Moris Dovek

发明人： Kenichi Takano ,  Lijie Guan ,  Yiu Liu ,  Joe Smyth ,  Moris Dovek

IPC分类号： G11B5/127

CPC分类号： G11B5/3163 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315

摘要： A side shield structure for a PMR write head is disclosed that narrows write width and minimizes adjacent track and far track erasure. The side shield structure on each side of the write pole has two sections. One section along the ABS and adjacent to the pole tip has a height (SSH1) defined by SSH1≦[(0.6×neck height)+0.08] microns. There is a non-magnetic gap layer between the first section and a second section that is formed adjacent to the flared sides of the main pole layer and serves to suction leakage flux from the flared portion and prevent unwanted flux from reaching the first side shield sections. A fabrication method is provided that includes electroplating the first side shield sections, depositing the non-magnetic gap layer, and then electroplating the second side shield sections. Subsequently, a main pole layer and a trailing shield are formed.

摘要翻译： 公开了一种用于PMR写头的侧屏蔽结构，其减小写入宽度并使相邻轨道和远轨道擦除最小化。 写磁极两侧的侧面屏蔽结构有两个部分。 沿着ABS并且与极尖相邻的一个部分具有由SSH1＆nlE定义的高度（SSH1）; [（0.6×颈部高度）+0.08]微米。 在第一部分和第二部分之间存在非磁性间隙层，该第二部分与主极层的扩张侧相邻形成，并用于从扩张部分吸收泄漏的焊剂，并防止不期望的焊剂到达第一侧面屏蔽部分 。 提供一种制造方法，其包括电镀第一侧屏蔽部分，沉积非磁隙层，然后电镀第二侧屏蔽部分。 随后，形成主极层和后屏蔽。

公开(公告)号：US20090091861A1

公开(公告)日：2009-04-09

申请号：US11906717

申请日：2007-10-03

申请人： Kenichi Takano ,  Lijie Guan ,  Yiu Liu ,  Joe Smyth ,  Moris Dovek

发明人： Kenichi Takano ,  Lijie Guan ,  Yiu Liu ,  Joe Smyth ,  Moris Dovek

IPC分类号： G11B5/33

CPC分类号： G11B5/3163 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315

摘要： A side shield structure for a PMR write head is disclosed that narrows write width and minimizes adjacent track and far track erasure. The side shield structure on each side of the write pole has two sections. One section along the ABS and adjacent to the pole tip has a height (SSH1) defined by SSH1≦[(0.6×neck height)+0.08] microns. There is a non-magnetic gap layer between the first section and a second section that is formed adjacent to the flared sides of the main pole layer and serves to suction leakage flux from the flared portion and prevent unwanted flux from reaching the first side shield sections. A fabrication method is provided that includes electroplating the first side shield sections, depositing the non-magnetic gap layer, and then electroplating the second side shield sections. Subsequently, a main pole layer and a trailing shield are formed.

摘要翻译： 公开了一种用于PMR写头的侧屏蔽结构，其减小写入宽度并使相邻轨道和远轨道擦除最小化。 写磁极两侧的侧面屏蔽结构有两个部分。 沿着ABS并且与极端部相邻的一个部分具有由SSH1 <= [（0.6xneck height）+0.08]]微米定义的高度（SSH1）。 在第一部分和第二部分之间存在非磁性间隙层，该第二部分与主极层的扩张侧相邻形成，并用于从扩张部分吸收泄漏的焊剂，并防止不期望的焊剂到达第一侧面屏蔽部分 。 提供一种制造方法，其包括电镀第一侧屏蔽部分，沉积非磁隙层，然后电镀第二侧屏蔽部分。 随后，形成主极层和后屏蔽。

公开(公告)号：US20120057257A1

公开(公告)日：2012-03-08

申请号：US13373251

申请日：2011-11-09

申请人： Kenichi Takano ,  Lijie Guan ,  Yuchen Zhou ,  Joe Smyth ,  Moris Dovek

发明人： Kenichi Takano ,  Lijie Guan ,  Yuchen Zhou ,  Joe Smyth ,  Moris Dovek

IPC分类号： G11B5/147 ,  B05D1/36 ,  B05D5/00

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/147 ,  G11B5/3143

摘要： A laminated write pole layer for a PMR write head is disclosed in which a plurality of “n” magnetic layers and “n−1” non-magnetic spacers are formed in an alternating fashion on a substrate. The non-magnetic spacers promote exchange decoupling or antiferromagnetic coupling between adjacent magnetic layers. Writability is improved when the trailing magnetic layer has a thickness greater than the thickness of other magnetic layers and preferably >25% of the total thickness of the magnetic layers. The thicknesses of the other magnetic layers may be equal or may become progressively smaller with increasing distance from the trailing magnetic layer. In another embodiment, the non-magnetic spacer between the trailing magnetic layer and the nearest magnetic layer is replaced by a magnetic spacer made of a soft magnetic material to promote magnetic coupling and effectively increase the thickness of the trailing magnetic layer.

摘要翻译： 公开了一种用于PMR写入头的层叠写入极层，其中在衬底上以交替的方式形成多个“n”个磁性层和“n-1”个非磁性间隔物。 非磁性间隔物促进相邻磁性层之间的交换去耦或反铁磁耦合。 当后磁性层的厚度大于其它磁性层的厚度，优选磁性层的总厚度的25％时，写入性能得到改善。 其他磁性层的厚度可以相等或随着与后磁性层的距离的增加而逐渐变小。 在另一个实施例中，后磁性层和最近的磁性层之间的非磁性间隔物被由软磁材料制成的磁性隔离层代替，以促进磁耦合并有效地增加后磁层的厚度。

公开(公告)号：US08625234B2

公开(公告)日：2014-01-07

申请号：US12150553

申请日：2008-04-29

申请人： Lijie Guan ,  Po-Kang Wang ,  Moris Dovek ,  Joe Smyth ,  Kenichi Takano ,  Yoshitaka Sasaki

发明人： Lijie Guan ,  Po-Kang Wang ,  Moris Dovek ,  Joe Smyth ,  Kenichi Takano ,  Yoshitaka Sasaki

IPC分类号： G11B5/31

CPC分类号： G11B5/1278 ,  G11B5/232 ,  G11B5/3116 ,  G11B5/3146

摘要： A structure and a process for a perpendicular write pole that provides increased magnetic flux at the ABS is disclosed. This is accomplished by increasing the amount of write flux that originates above the write gap, without changing the pole taper at the ABS. Three embodiment of the invention are discussed.

摘要翻译： 公开了一种用于在ABS处提供增加的磁通量的垂直写入极的结构和工艺。 这是通过增加起始于写入间隙的写入通量的量来实现的，而不改变ABS处的极锥度。 讨论本发明的三个实施例。

公开(公告)号：US08059366B2

公开(公告)日：2011-11-15

申请号：US11879952

申请日：2007-07-19

申请人： Kenichi Takano ,  Lijie Guan ,  Yuchen Zhou ,  Joe Smyth ,  Moris Dovek

发明人： Kenichi Takano ,  Lijie Guan ,  Yuchen Zhou ,  Joe Smyth ,  Moris Dovek

IPC分类号： G11B5/147 ,  G11B5/127

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/147 ,  G11B5/3143

摘要： A laminated write pole layer for a PMR write head is disclosed in which a plurality of “n” magnetic layers and “n−1” non-magnetic spacers are formed in an alternating fashion on a substrate. The non-magnetic spacers promote exchange decoupling or antiferromagnetic coupling between adjacent magnetic layers. Writability is improved when the trailing magnetic layer has a thickness greater than the thickness of other magnetic layers and preferably >25% of the total thickness of the magnetic layers. The thicknesses of the other magnetic layers may be equal or may become progressively smaller with increasing distance from the trailing magnetic layer. In another embodiment, the non-magnetic spacer between the trailing magnetic layer and the nearest magnetic layer is replaced by a magnetic spacer made of a soft magnetic material to promote magnetic coupling and effectively increase the thickness of the trailing magnetic layer.

摘要翻译： 公开了一种用于PMR写入头的层叠写入极层，其中在衬底上以交替的方式形成多个“n”个磁性层和“n-1”个非磁性间隔物。 非磁性间隔物促进相邻磁性层之间的交换去耦或反铁磁耦合。 当后磁性层的厚度大于其它磁性层的厚度，优选磁性层的总厚度的25％时，写入性能得到改善。 其他磁性层的厚度可以相等或随着与后磁性层的距离的增加而逐渐变小。 在另一个实施例中，后磁性层和最近的磁性层之间的非磁性间隔物被由软磁材料制成的磁性间隔物代替，以促进磁耦合并有效地增加后磁层的厚度。

公开(公告)号：US20090268344A1

公开(公告)日：2009-10-29

申请号：US12150553

申请日：2008-04-29

申请人： Lijie Guan ,  Po-Kang Wang ,  Moris Dovek ,  Joe Smyth ,  Kenichi Takano ,  Yoshitaka Sasaki

发明人： Lijie Guan ,  Po-Kang Wang ,  Moris Dovek ,  Joe Smyth ,  Kenichi Takano ,  Yoshitaka Sasaki

IPC分类号： G11B5/23

CPC分类号： G11B5/1278 ,  G11B5/232 ,  G11B5/3116 ,  G11B5/3146

摘要： A structure and a process for a perpendicular write pole that provides increased magnetic flux at the ABS is disclosed. This is accomplished by increasing the amount of write flux that originates above the write gap, without changing the pole taper at the ABS. Three embodiment of the invention are discussed.

摘要翻译： 公开了一种用于在ABS处提供增加的磁通量的垂直写入极的结构和工艺。 这是通过增加起始于写入间隙的写入通量的量来实现的，而不改变ABS处的极锥度。 讨论本发明的三个实施例。

公开(公告)号：US20090021868A1

公开(公告)日：2009-01-22

申请号：US11879952

申请日：2007-07-19

申请人： Kenichi Takano ,  Lijie Guan ,  Yuchen Zhou ,  Joe Smyth ,  Moris Dovek

发明人： Kenichi Takano ,  Lijie Guan ,  Yuchen Zhou ,  Joe Smyth ,  Moris Dovek

IPC分类号： G11B5/33 ,  G11B5/147 ,  B05D5/12

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/147 ,  G11B5/3143

摘要： A laminated write pole layer for a PMR write head is disclosed in which a plurality of “n” magnetic layers and “n−1” non-magnetic spacers are formed in an alternating fashion on a substrate. The non-magnetic spacers promote exchange decoupling or antiferromagnetic coupling between adjacent magnetic layers. Writability is improved when the trailing magnetic layer has a thickness greater than the thickness of other magnetic layers and preferably >25% of the total thickness of the magnetic layers. The thicknesses of the other magnetic layers may be equal or may become progressively smaller with increasing distance from the trailing magnetic layer. In another embodiment, the non-magnetic spacer between the trailing magnetic layer and the nearest magnetic layer is replaced by a magnetic spacer made of a soft magnetic material to promote magnetic coupling and effectively increase the thickness of the trailing magnetic layer.

摘要翻译： 公开了一种用于PMR写入头的层叠写入极层，其中在衬底上以交替的方式形成多个“n”个磁性层和“n-1”个非磁性间隔物。 非磁性间隔物促进相邻磁性层之间的交换去耦或反铁磁耦合。 当后磁性层的厚度大于其它磁性层的厚度，优选磁性层的总厚度的25％时，写入性能得到改善。 其他磁性层的厚度可以相等或随着与后磁性层的距离的增加而逐渐变小。 在另一个实施例中，后磁性层和最近的磁性层之间的非磁性间隔物被由软磁材料制成的磁性隔离层代替，以促进磁耦合并有效地增加后磁层的厚度。

公开(公告)号：US08559132B2

公开(公告)日：2013-10-15

申请号：US13373251

申请日：2011-11-09

申请人： Kenichi Takano ,  Lijie Guan ,  Yuchen Zhou ,  Joe Smyth ,  Moris Dovek

发明人： Kenichi Takano ,  Lijie Guan ,  Yuchen Zhou ,  Joe Smyth ,  Moris Dovek

IPC分类号： G11B5/127 ,  G11B5/147

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/147 ,  G11B5/3143

摘要： A laminated write pole layer for a PMR write head is disclosed in which a plurality of “n” magnetic layers and “n−1” non-magnetic spacers are formed in an alternating fashion on a substrate. The non-magnetic spacers promote exchange decoupling or antiferromagnetic coupling between adjacent magnetic layers. Writability is improved when the trailing magnetic layer has a thickness greater than the thickness of other magnetic layers and preferably >25% of the total thickness of the magnetic layers. The thicknesses of the other magnetic layers may be equal or may become progressively smaller with increasing distance from the trailing magnetic layer. In another embodiment, the non-magnetic spacer between the trailing magnetic layer and the nearest magnetic layer is replaced by a magnetic spacer made of a soft magnetic material to promote magnetic coupling and effectively increase the thickness of the trailing magnetic layer.

摘要翻译： 公开了一种用于PMR写入头的层叠写入极层，其中在衬底上以交替的方式形成多个“n”个磁性层和“n-1”个非磁性间隔物。 非磁性间隔物促进相邻磁性层之间的交换去耦或反铁磁耦合。 当后磁性层的厚度大于其它磁性层的厚度，优选磁性层的总厚度的25％时，写入性能得到改善。 其他磁性层的厚度可以相等或随着与后磁性层的距离的增加而逐渐变小。 在另一个实施例中，后磁性层和最近的磁性层之间的非磁性间隔物被由软磁材料制成的磁性隔离层代替，以促进磁耦合并有效地增加后磁层的厚度。

公开(公告)号：US08881376B2

公开(公告)日：2014-11-11

申请号：US13199179

申请日：2011-08-22

申请人： Yuchen Zhou ,  Kenichi Takano ,  Kowang Liu ,  Kunliang Zhang ,  Liejie Guan ,  Moris Dovek ,  Joe Smyth

发明人： Yuchen Zhou ,  Kenichi Takano ,  Kowang Liu ,  Kunliang Zhang ,  Liejie Guan ,  Moris Dovek ,  Joe Smyth

IPC分类号： G11B5/127 ,  G11B5/21 ,  G11B5/31 ,  G11B5/147

CPC分类号： G11B5/3113 ,  G11B5/1278 ,  G11B5/147 ,  G11B5/3146 ,  Y10T29/49032 ,  Y10T29/49034 ,  Y10T29/49043 ,  Y10T29/49044

摘要： A method of manufacturing a PMR writer is disclosed that minimizes pole erasure during non-writing and maximize write field during writing by including an AFM-FM phase change material spacer that is in an AFM state during non-writing and switches to a FM state by heating during writing. The main pole layer including the write pole may be formed as a laminated structure by a sputter deposition process wherein a plurality of “n” ferromagnetic layers and “n−1” AFM-FM phase change material layers are laid down in an alternating manner. The AFM-FM phase change material is preferably a FeRh or FeRhX alloy (X=Pt, Pd, or Ir) having a Rh content >35 atomic %, and may also be used as a flux gate to prevent yoke flux from leaking into the write pole tip.

摘要翻译： 公开了一种制造PMR写入器的方法，其在非写入期间使磁极擦除最小化，并且在写入期间使写入场最大化，包括在非写入期间处于AFM状态的AFM-FM相变材料间隔物，并且通过 书写过程中加热。 包括写极的主极层可以通过溅射沉积工艺形成为层叠结构，其中以交替的方式放置多个“n”个铁磁层和“n-1”个AFM-FM相变材料层。 AFM-FM相变材料优选为Rh含量> 35原子％的FeRh或FeRhX合金（X = Pt，Pd或Ir），并且还可以用作磁通门以防止磁轭焊剂泄漏到 写极点。

公开(公告)号：US08503271B2

公开(公告)日：2013-08-06

申请号：US13551670

申请日：2012-07-18

申请人： Yuchen Zhou ,  Kenichi Takano ,  Xuhui Jin ,  Erhard Schreck ,  Moris Dovek ,  Joe Smyth

发明人： Yuchen Zhou ,  Kenichi Takano ,  Xuhui Jin ,  Erhard Schreck ,  Moris Dovek ,  Joe Smyth

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/02 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021 ,  Y10T29/49032

摘要： A method of forming a TAMR (Thermal Assisted Magnetic Recording) write head that uses the energy of optical-laser generated edge plasmons in a plasmon antenna to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The method incorporates forming a magnetic core within the plasmon antenna, so the antenna effectively becomes an extension of the magnetic pole and produces a magnetic field whose maximum gradient overlaps the region being heated by the edge plasmons generated in the conducting layer of the antenna surrounding the antenna's magnetic core.

摘要翻译： 一种形成TAMR（热辅助磁记录）写头的方法，其使用等离子体激元中的激光产生的边缘等离子体激元的能量来局部加热磁记录介质并降低其矫顽力和磁各向异性。 该方法包括在等离子体激元天线内形成磁芯，因此天线有效地成为磁极的延伸，并产生磁场，其最大梯度与被天线周围的天线导电层中产生的边缘等离子体激发加热的区域重叠 天线的磁芯。