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    • 63. 发明申请
    • Composite shield structure of PMR writer for high track density
    • 用于高轨道密度的PMR写入器的复合屏蔽结构
    • US20100328816A1
    • 2010-12-30
    • US12807173
    • 2010-08-30
    • Lijie GuanMoris DovekJoe SmythYoshitaka Sasaki
    • Lijie GuanMoris DovekJoe SmythYoshitaka Sasaki
    • G11B5/17
    • G11B5/1278G11B5/11G11B5/3116G11B5/3146G11B5/315
    • Improved writability and a substantial reduction in adjacent track erasure are achieved by incorporating a composite shield structure in a PMR writer. There is a trailing shield formed a certain distance above the top surface of a write pole, a leading shield formed a certain distance below the bottom surface of the write pole, and a partial side shield having a side shield section formed on each side of the write pole. The partial side shield thickness is less than that of the write pole. Each partial side shield section has a side that is parallel to the nearest write pole side and a top surface that is offset from the write pole top surface by 0 to 0.15 microns. A plurality of magnetic connections between two or more shield elements is employed to ensure correct magnetic potential. The large write pole has a flare angle of 45 to 75 degrees.
    • 通过在PMR写入器中并入复合屏蔽结构来实现改进的可编写性和相邻轨迹擦除的实质性减少。 在写入磁极的上表面之上形成一定距离的尾部屏蔽件,在写入磁极的底表面下方形成一定距离的前屏蔽件,以及形成在屏蔽件的每一侧上的侧面屏蔽部分 写柱 部分侧屏蔽厚度小于写入极的厚度。 每个局部侧屏蔽部分具有平行于最近的写入极侧的一侧和从写入磁极顶部表面偏移0至0.15微米的顶部表面。 采用两个或更多个屏蔽元件之间的多个磁连接来确保正确的磁势。 大写字杆的喇叭角为45度至75度。
    • 65. 发明申请
    • Composite shield structure of PMR writer for high track density
    • 用于高轨道密度的PMR写入器的复合屏蔽结构
    • US20080273277A1
    • 2008-11-06
    • US11787016
    • 2007-04-13
    • Lijie GuanMoris DovekJoe SmythYoshitaka Sasaki
    • Lijie GuanMoris DovekJoe SmythYoshitaka Sasaki
    • G11B5/33G11B5/127
    • G11B5/1278G11B5/11G11B5/3116G11B5/3146G11B5/315
    • Improved writability and a substantial reduction in adjacent track erasure are achieved by incorporating a composite shield structure in a PMR writer. There is a trailing shield formed a certain distance above the top surface of a write pole, a leading shield formed a certain distance below the bottom surface of the write pole, and a partial side shield having a section formed on each side of the write pole. The partial side shield thickness is less than that of the write pole. Each partial side shield section has a side that is parallel to the nearest write pole side and a top surface that is offset from the write pole top surface by 0 to 0.15 microns. A plurality of magnetic connections between two or more shield elements is employed to ensure correct magnetic potential. The large write pole has a flare angle of 45 to 75 degrees.
    • 通过在PMR写入器中并入复合屏蔽结构来实现改进的可编写性和相邻轨迹擦除的实质性减少。 在写极的上表面之上形成一定距离的后屏蔽,在写极的底表面下方形成一定距离的前屏蔽,以及形成在写柱的每一侧上的部分的局部侧屏蔽 。 部分侧屏蔽厚度小于写入极的厚度。 每个局部侧屏蔽部分具有平行于最近的写入极侧的一侧和从写入磁极顶部表面偏移0至0.15微米的顶部表面。 采用两个或更多个屏蔽元件之间的多个磁连接来确保正确的磁势。 大写字杆的喇叭角为45度至75度。
    • 69. 发明授权
    • Composite shield structure of PMR writer for high track density
    • 用于高轨道密度的PMR写入器的复合屏蔽结构
    • US08023231B2
    • 2011-09-20
    • US12807173
    • 2010-08-30
    • Lijie GuanMoris DovekJoe SmythYoshitaka Sasaki
    • Lijie GuanMoris DovekJoe SmythYoshitaka Sasaki
    • G11B5/127
    • G11B5/1278G11B5/11G11B5/3116G11B5/3146G11B5/315
    • Improved writability and a substantial reduction in adjacent track erasure are achieved by incorporating a composite shield structure in a PMR writer. There is a trailing shield formed a certain distance above the top surface of a write pole, a leading shield formed a certain distance below the bottom surface of the write pole, and a partial side shield having a side shield section formed on each side of the write pole. The partial side shield thickness is less than that of the write pole. Each partial side shield section has a side that is parallel to the nearest write pole side and a top surface that is offset from the write pole top surface by 0 to 0.15 microns. A plurality of magnetic connections between two or more shield elements is employed to ensure correct magnetic potential. The large write pole has a flare angle of 45 to 75 degrees.
    • 通过在PMR写入器中并入复合屏蔽结构来实现改进的可编写性和相邻轨迹擦除的实质性减少。 在写入磁极的上表面之上形成一定距离的尾部屏蔽件,在写入磁极的底表面下方形成一定距离的前屏蔽件,以及形成在屏蔽件的每一侧上的侧面屏蔽部分 写柱 部分侧屏蔽厚度小于写入极的厚度。 每个局部侧屏蔽部分具有平行于最近的写入极侧的一侧和从写入磁极顶部表面偏移0至0.15微米的顶部表面。 采用两个或更多个屏蔽元件之间的多个磁连接来确保正确的磁势。 大写字杆的喇叭角为45度至75度。
    • 70. 发明申请
    • Perpendicular magnetic recording write head with a side shield
    • 垂直磁记录头带侧面屏蔽
    • US20090091861A1
    • 2009-04-09
    • US11906717
    • 2007-10-03
    • Kenichi TakanoLijie GuanYiu LiuJoe SmythMoris Dovek
    • Kenichi TakanoLijie GuanYiu LiuJoe SmythMoris Dovek
    • G11B5/33
    • G11B5/3163G11B5/1278G11B5/3116G11B5/3146G11B5/315
    • 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.
    • 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。