公开(公告)号：US20050168871A1

公开(公告)日：2005-08-04

申请号：US11091160

申请日：2005-03-28

申请人： Cherng-Chyi Han ,  Mao-Min Chen ,  Fenglin Liu

发明人： Cherng-Chyi Han ,  Mao-Min Chen ,  Fenglin Liu

IPC分类号： G11B5/31 ,  G11B5/147

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/23 ,  G11B5/3163

摘要： A method for forming a trimmed upper pole piece for a magnetic write head, said pole piece having a uniform width above and below a write gap layer. Prior art methods of trimming pole pieces to a final width using ion-beam etches produce pole pieces with thickness differentials due to the etch resistant nature of the alumina write-gap filling material. The present method uses NiCr, NiFeCr or Ru as write gap filling materials which have an etch rate which is substantially equal to the etch rate of the other layers forming the pole piece and are highly corrosion resistant.

摘要翻译： 一种用于形成用于磁性写入头的修整的上极片的方法，所述极片在写间隙层上方和下方具有均匀的宽度。 使用离子束蚀刻将极片修剪到最终宽度的现有技术方法由于氧化铝写入间隙填充材料的耐蚀刻性质而产生具有厚度差异的极片。 本方法使用NiCr，NiFeCr或Ru作为写入间隙填充材料，其蚀刻速率基本上等于形成极片的其它层的蚀刻速率，并且具有高度耐腐蚀性。

公开(公告)号：US07359150B2

公开(公告)日：2008-04-15

申请号：US11091160

申请日：2005-03-28

申请人： Cherng-Chyi Han ,  Mao-Min Chen ,  Fenglin Liu

发明人： Cherng-Chyi Han ,  Mao-Min Chen ,  Fenglin Liu

IPC分类号： G11B5/39 ,  G11B5/147

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/23 ,  G11B5/3163

摘要： A trimmed upper pole piece for a magnetic write head is presented, said pole piece having a uniform width above and below a write gap layer and said pole piece being formed on a pedestal of uniform width projecting from a planar surface of a magnetic shield layer. Prior art methods of trimming pole pieces to a final width using ion-beam etches produce pole pieces with thickness differentials due to the etch resistant nature of the typical alumina write-gap filling material. The present pole piece uses NiCr, NiFeCr or Ru as write gap filling materials because they have an etch rate which is substantially equal to the etch rate of the other layers forming the pole piece and allow a uniform trimming to occur.

摘要翻译： 提出了一种用于磁性写入头的修整的上极片，所述极片在写间隙层上方和下方具有均匀的宽度，并且所述极片形成在从磁屏蔽层的平坦表面突出的均匀宽度的基座上。 使用离子束蚀刻将极片修剪到最终宽度的现有技术方法由于典型的氧化铝写入间隙填充材料的耐蚀刻性质而产生具有厚度差异的极片。 本极极片使用NiCr，NiFeCr或Ru作为写入间隙填充材料，因为它们的蚀刻速率基本上等于形成极片的其它层的蚀刻速率，并允许发生均匀的修整。

公开(公告)号：US06960281B2

公开(公告)日：2005-11-01

申请号：US10394098

申请日：2003-03-21

申请人： Cherng-Chyi Han ,  Mao-Min Chen ,  Po Kang Wang ,  Fenglin Liu

发明人： Cherng-Chyi Han ,  Mao-Min Chen ,  Po Kang Wang ,  Fenglin Liu

IPC分类号： G11B5/31 ,  G11B5/39 ,  C23C14/34

CPC分类号： G11B5/3163 ,  G11B5/3116 ,  G11B5/3967 ,  Y10T29/49032

摘要： A method for forming a trimmed upper pole piece for a magnetic write head, said pole piece having a tapered profile that is widest at its trailing edge. Such a pole piece is capable of writing narrow tracks with sharply and well defined patterns and minimal overwriting of adjacent tracks. The present method produces the necessary taper by using NiCr, NiFeCr, Rh or Ru as write gap filling materials which have an etch rate which is substantially equal to the etch rate of the other layers forming the pole piece and are highly corrosion resistant. As a result, the write gap does not protrude to mask the effects of the ion-beam etch used to form the taper.

摘要翻译： 一种用于形成用于磁性写入头的修整的上极片的方法，所述极片具有在其后缘处最宽的锥形轮廓。 这样的极片能够以清晰明确的图案和相邻轨迹的最小重写来写入窄轨道。 本方法通过使用NiCr，NiFeCr，Rh或Ru作为写入间隙填充材料产生必要的锥度，其具有基本上等于形成极片的其它层的蚀刻速率的蚀刻速率，并且具有高耐腐蚀性。 结果，写入间隙不突出以掩盖用于形成锥形的离子束蚀刻的效果。

公开(公告)号：US06887355B2

公开(公告)日：2005-05-03

申请号：US10284848

申请日：2002-10-31

申请人： Cherng-Chyi Han ,  Mao-Min Chen ,  Fenglin Liu

发明人： Cherng-Chyi Han ,  Mao-Min Chen ,  Fenglin Liu

IPC分类号： G11B5/31 ,  C23C14/34 ,  B05D1/40 ,  B05D3/00

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/23 ,  G11B5/3163

摘要： A method for forming a trimmed upper pole piece for a magnetic write head, said pole piece having a uniform width above and below a write gap layer. Prior art methods of trimming pole pieces to a final width using ion-beam etches produce pole pieces with thickness differentials due to the etch resistant nature of the alumina write-gap filling material. The present method uses NiCr, NiFeCr or Ru as write gap filling materials which have an etch rate which is substantially equal to the etch rate of the other layers forming the pole piece and are highly corrosion resistant.

摘要翻译： 一种用于形成用于磁性写入头的修整的上极片的方法，所述极片在写间隙层上方和下方具有均匀的宽度。 使用离子束蚀刻将极片修剪到最终宽度的现有技术方法由于氧化铝写入间隙填充材料的耐蚀刻性质而产生具有厚度差异的极片。 本方法使用NiCr，NiFeCr或Ru作为写入间隙填充材料，其蚀刻速率基本上等于形成极片的其它层的蚀刻速率，并且具有高度耐腐蚀性。

公开(公告)号：US20060012915A1

公开(公告)日：2006-01-19

申请号：US11229160

申请日：2005-09-16

申请人： Cherng-Chyi Han ,  Mao-Min Chen ,  Po Wang ,  Fenglin Liu

发明人： Cherng-Chyi Han ,  Mao-Min Chen ,  Po Wang ,  Fenglin Liu

IPC分类号： G11B5/147

CPC分类号： G11B5/3163 ,  G11B5/3116 ,  G11B5/3967 ,  Y10T29/49032

摘要： A trimmed upper pole piece for a magnetic write head, said pole piece having a tapered profile that is widest at its trailing edge. Such a pole piece is capable of writing narrow tracks with sharply and well defined patterns and minimal overwriting of adjacent tracks. The necessary taper is produced by using NiCr, NiFeCr, Rh or Ru as write gap filling materials which have an etch rate which is substantially equal to the etch rate of the other layers forming the pole piece and are highly corrosion resistant. As a result, the write gap does not protrude to mask the effects of the ion-beam etch used to form the taper.

摘要翻译： 用于磁写头的经修剪的上极片，所述极片具有在其后缘处最宽的锥形轮廓。 这样的极片能够以清晰明确的图案和相邻轨迹的最小重写来写入窄轨道。 通过使用NiCr，NiFeCr，Rh或Ru作为写入间隙填充材料产生必要的锥度，其具有基本上等于形成极片的其它层的蚀刻速率的蚀刻速率并且具有高耐腐蚀性。 结果，写入间隙不会突出以掩盖用于形成锥形的离子束蚀刻的效果。

公开(公告)号：US07382577B2

公开(公告)日：2008-06-03

申请号：US11229160

申请日：2005-09-16

申请人： Cherng-Chyi Han ,  Mao-Min Chen ,  Po Kang Wang ,  Fenglin Liu

发明人： Cherng-Chyi Han ,  Mao-Min Chen ,  Po Kang Wang ,  Fenglin Liu

IPC分类号： G11B5/39 ,  G11B5/187

CPC分类号： G11B5/3163 ,  G11B5/3116 ,  G11B5/3967 ,  Y10T29/49032

摘要： A trimmed upper pole piece for a magnetic write head, said pole piece having a tapered profile that is widest at its trailing edge. Such a pole piece is capable of writing narrow tracks with sharply and well defined patterns and minimal overwriting of adjacent tracks. The necessary taper is produced by using NiCr, NiFeCr, Rh or Ru as write gap filling materials which have an etch rate which is substantially equal to the etch rate of the other layers forming the pole piece and are highly corrosion resistant. As a result, the write gap does not protrude to mask the effects of the ion-beam etch used to form the taper.

摘要翻译： 用于磁写头的经修剪的上极片，所述极片具有在其后缘处最宽的锥形轮廓。 这样的极片能够以清晰明确的图案和相邻轨迹的最小重写来写入窄轨道。 通过使用NiCr，NiFeCr，Rh或Ru作为写入间隙填充材料产生必要的锥度，其具有基本上等于形成极片的其它层的蚀刻速率的蚀刻速率并且具有高耐腐蚀性。 结果，写入间隙不突出以掩盖用于形成锥形的离子束蚀刻的效果。

公开(公告)号：US07751146B2

公开(公告)日：2010-07-06

申请号：US11881350

申请日：2007-07-26

申请人： Cherng-Chyi Han ,  Mao-Min Chen ,  Laurie Lauchlan ,  Lei Zhang

发明人： Cherng-Chyi Han ,  Mao-Min Chen ,  Laurie Lauchlan ,  Lei Zhang

IPC分类号： G11B5/187 ,  G11B5/127

CPC分类号： G11B5/33 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/4906 ,  Y10T29/49062 ,  Y10T29/49064

摘要： Aggressive (i.e. tight tolerance) stitching offers several advantages for magnetic write heads but at the cost of some losses during pole trimming. This problem has been overcome by replacing the alumina filler layer, that is used to protect the stitched pole during trimming, with a layer of electro-plated material. Because of the superior step coverage associated with the plating method of deposition, pole trimming can then proceed without the introduction of stresses to the stitched pole while it is being trimmed.

摘要翻译： 积极（即紧公差）缝合为磁性写入头提供了几个优点，但是在极修整期间以一些损失为代价。 通过用一层电镀材料代替在修整期间用于保护缝合极的氧化铝填料层已经克服了这个问题。 由于与沉积电镀方法相关的优越的台阶覆盖，因此可以进行极细修剪，而不会在缝合极被修剪时引入应力。

公开(公告)号：US07631418B2

公开(公告)日：2009-12-15

申请号：US11881316

申请日：2007-07-26

申请人： Cherng-Chyi Han ,  Mao-Min Chen ,  Laurie Lauchlan ,  Lei Zhang

发明人： Cherng-Chyi Han ,  Mao-Min Chen ,  Laurie Lauchlan ,  Lei Zhang

IPC分类号： G11B5/187

CPC分类号： G11B5/33 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/4906 ,  Y10T29/49062 ,  Y10T29/49064

摘要： A manufacturing process is provided where aggressive (i.e. tight tolerance) stitching offers several advantages for magnetic write heads but at the cost of some losses during pole trimming. This problem has been overcome by replacing the alumina filler layer, that is used to protect the stitched pole during trimming, with a layer of electroplated material. Because of the superior step coverage associated with the plating method of deposition, pole trimming can then proceed without the introduction of stresses to the stitched pole while it is being trimmed.

摘要翻译： 提供了一种制造工艺，其中积极（即紧密公差）缝合为磁性写头提供了几个优点，但是在极修整期间以一些损失为代价。 通过用一层电镀材料替换用于在修整期间保护缝合极的氧化铝填料层已经克服了这个问题。 由于与沉积电镀方法相关的优越的台阶覆盖，因此可以进行极细修剪，而不会在缝合极被修剪时引入应力。

公开(公告)号：US20070268628A1

公开(公告)日：2007-11-22

申请号：US11881350

申请日：2007-07-26

申请人： Cherng-Chyi Han ,  Mao-Min Chen ,  Laurie Lauchlan ,  Lei Zhang

发明人： Cherng-Chyi Han ,  Mao-Min Chen ,  Laurie Lauchlan ,  Lei Zhang

IPC分类号： G11B5/147

CPC分类号： G11B5/33 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/4906 ,  Y10T29/49062 ,  Y10T29/49064

摘要： Aggressive (i.e. tight tolerance) stitching offers several advantages for magnetic write heads but at the cost of some losses during pole trimming. This problem has been overcome by replacing the alumina filler layer, that is used to protect the stitched pole during trimming, with a layer of electro-plated material. Because of the superior step coverage associated with the plating method of deposition, pole trimming can then proceed without the introduction of stresses to the stitched pole while it is being trimmed.

摘要翻译： 积极（即紧公差）缝合为磁性写入头提供了几个优点，但是在极修整期间以一些损失为代价。 通过用一层电镀材料代替在修整期间用于保护缝合极的氧化铝填料层已经克服了这个问题。 由于与沉积电镀方法相关的优越的台阶覆盖，因此可以进行极细修剪，而不会在缝合极被修剪时引入应力。

公开(公告)号：US06608737B2

公开(公告)日：2003-08-19

申请号：US10266664

申请日：2002-10-08

申请人： Cherng-Chyi Han ,  Mao-Min Chen ,  Po-Kang Wang ,  Moris Musa Dovek ,  Gene Michael Sandler ,  Jen-Wei C. Koo

发明人： Cherng-Chyi Han ,  Mao-Min Chen ,  Po-Kang Wang ,  Moris Musa Dovek ,  Gene Michael Sandler ,  Jen-Wei C. Koo

IPC分类号： G11B5127

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3967 ,  G11B2005/3996 ,  Y10T29/49046

摘要： A giant magneto-resistive head is provided which includes a novel high data-rate stitched pole inductive magnetic write head. The write head incorporates a non-magnetic spacer layer and a magnetic pole yoke that is recessed from the magnetic pole tip. The spacer layer shortens the throat height of the write head, reduces its saturation write current, and improves its overwrite and side erasure performance.

摘要翻译： 提供了一种巨型磁阻头，它包括一种新颖的高数据速率缝合磁极感应磁写头。 写磁头包括从磁极尖端凹入的非磁性间隔层和磁极轭。 间隔层缩短写头的喉部高度，降低其饱和写入电流，并提高其覆盖和侧面擦除性能。