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：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：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：US20070266551A1

公开(公告)日：2007-11-22

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： G11B5/127 ,  H04R31/00

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 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： 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：US20060164766A1

公开(公告)日：2006-07-27

申请号：US11375323

申请日：2006-03-14

申请人： Yun-Fei Li ,  Hui-Chuan Wang ,  Chyu-Jiuh Torng ,  Cherng-Chyi Han ,  Mao-Min Chen

发明人： Yun-Fei Li ,  Hui-Chuan Wang ,  Chyu-Jiuh Torng ,  Cherng-Chyi Han ,  Mao-Min Chen

IPC分类号： G11B5/33 ,  B05D5/12 ,  G11B5/127

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3932 ,  G11B2005/3996 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

摘要： Although it is known that exchange bias can be utilized in abutted junctions for longitudinal stabilization, a relatively large moment is needed to pin down the sensor edges effectively. Due to the inverse dependence of the exchange bias on the magnetic layer thickness, a large exchange bias has been difficult to achieve by the prior art. This problem has been solved by introducing a structure in which the magnetic moment of the bias layer has been approximately doubled by pinning it from both above and below through exchange with antiferromagnetic layers. Additionally, since the antiferromagnetic layer is in direct abutted contact with the free layer, it acts directly to help stabilize the sensor edge, which is an advantage over the traditional magnetostatic pinning that had been used.

公开(公告)号：US07061730B2

公开(公告)日：2006-06-13

申请号：US10649456

申请日：2003-08-27

申请人： Cheng T. Horng ,  Mao-Min Chen ,  Chen-Jung Chien ,  Cherng-Chyi Han ,  Chyu-Jiuh Torng ,  Ru-Ying Tong

发明人： Cheng T. Horng ,  Mao-Min Chen ,  Chen-Jung Chien ,  Cherng-Chyi Han ,  Chyu-Jiuh Torng ,  Ru-Ying Tong

IPC分类号： G11B5/39

CPC分类号： B82Y25/00 ,  G11B5/4853 ,  G11B5/486 ,  H01F10/324 ,  H01F10/3268

摘要： A spin-valve magnetoresistive read element has a thin conductive lead layer of high sheet conductivity, high hardness, high melting point, high corrosion resistance and lacking the propensity for smearing, oozing, electromigration and nodule formation. Said lead layer is formed upon the hard magnetic longitudinal bias layer of an abutted junction spin-valve type magnetoresistive read head and said read head is therefore suitable for reading high density recorded disks at high RPM.

摘要翻译： 自旋阀磁阻读取元件具有导电性高，硬度高，熔点高，耐腐蚀性高，缺乏涂抹，渗出，电迁移和结核形成倾向的薄导电铅层。 所述引线层形成在接触自旋阀型磁阻读取头的硬磁纵向偏置层上，因此所述读头适用于以高RPM读取高密度记录盘。

公开(公告)号：US07038880B2

公开(公告)日：2006-05-02

申请号：US10633132

申请日：2003-08-01

申请人： Cherng-Chyi Han ,  Danning Yang ,  Mao-Min Chen

发明人： Cherng-Chyi Han ,  Danning Yang ,  Mao-Min Chen

IPC分类号： G11B5/147

CPC分类号： G11B5/3136 ,  G11B5/127 ,  G11B5/147 ,  G11B5/31 ,  G11B5/3196

摘要： An inductive-type write head and its method of fabrication are disclosed. The write head has a vertically separated two-element planar coil of reduced resistance which is the result of forming the lower of the two coils with windings of a greater height and substantially larger cross-sectional area than those of the upper coil. The formation of a lower coil with greater height is possible because of a surface planarization that allows separating the coils by an alumina layer of minimal thickness. This method allows the reduction of coil resistance without the necessity of enlarging the head dimensions. The reduced resistance results in lower power consumption and the elimination of pole tip protrusion caused by excessive heating during operation.

摘要翻译： 公开了一种电感式写入头及其制造方法。 写头具有具有降低的电阻的垂直分离的两元件平面线圈，其是形成两个线圈中较低的线圈的结果，其绕组具有比上部线圈的更大的高度和大得多的横截面积的绕组。 由于表面平坦化，允许通过最小厚度的氧化铝层分离线圈，所以形成较高高度的下线圈是可能的。 该方法允许减小线圈电阻而不需要扩大头部尺寸。 降低的电阻导致较低的功率消耗和由于操作期间的过度加热而导致的极尖突起的消除。