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    High moment side shield design for area density improvement of perpendicular magnetic recording (PMR) writer
    2.
    发明授权
    High moment side shield design for area density improvement of perpendicular magnetic recording (PMR) writer 有权
    垂直磁记录（PMR）作者的面积密度改善的高矩侧面设计

    公开(公告)号：US09589582B2

    公开(公告)日：2017-03-07

    申请号：US15162091

    申请日：2016-05-23

    Applicant: Headway Technologies, Inc. ,  TDK Corporation

    Inventor： Yue Liu ,  Atsushi Yamaguchi ,  Yuhui Tang ,  Jiun-Ting Lee ,  Yaguang Wei ,  Xiaomin Liu ,  Hideyuki Ukita ,  Moris Dovek ,  Michitaka Nishiyama

    IPC: G11B5/31 ,  G11B5/60 ,  G11B5/127

    CPC classification number: G11B5/3116 ,  G11B5/00826 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/187 ,  G11B5/1871 ,  G11B5/23 ,  G11B5/315 ,  G11B5/3163 ,  G11B5/3912 ,  G11B5/6082

    Abstract: A PMR writer is disclosed wherein a hot seed layer (HS) made of a 19-24 kilogauss (kG) magnetic material is formed between a gap layer and a 10-16 kG magnetic layer in the side shields, and between the leading gap and a 16-19 kG magnetic layer in the leading shield to improve the track field gradient and cross-track field gradient while maintaining write-ability. The HS is from 10 to 100 nm thick and has a first side facing the write pole with a height of ≦0.15 micron, and a second side facing a main pole flared side that may extend to a full side shield height of ≦0.5 micron. The trailing shield has a second hot seed layer on the write gap and a 16-19 kG magnetic layer that contacts the 10-16 kG side shield magnetic layer thereby forming an all wrap around (AWA) shield configuration.

    Abstract translation: 公开了一种PMR写入器，其中在侧面屏蔽之间的间隙层和10-16kG磁性层之间以及在前导间隙和第二磁性层之间形成由19-24千兆（kG）磁性材料制成的热种子层（HS） 一个16-19 kG的磁屏蔽层，以提高轨道场梯度和跨轨道场梯度，同时保持写入能力。 HS为10至100nm厚，并且具有面向高度≤0.15微米的写极的第一面和面向主极扩张侧的第二面，其可延伸至≤0.5微米的全侧屏蔽高度。 后屏蔽在写间隙上具有第二热种子层，以及接触10-16kG侧屏蔽磁性层的16-19kG磁性层，从而形成全包裹（AWA）屏蔽配置。

    High Moment Side Shield Design for Area Density Improvement of Perpendicular Magnetic Recording (PMR) Writer
    3.
    发明申请
    High Moment Side Shield Design for Area Density Improvement of Perpendicular Magnetic Recording (PMR) Writer 审中-公开
    垂直磁记录（PMR）作者区域密度改进的高瞬时侧屏设计

    公开(公告)号：US20160307586A1

    公开(公告)日：2016-10-20

    申请号：US15162091

    申请日：2016-05-23

    Applicant: Headway Technologies, Inc. ,  TDK Corporation

    Inventor： Yue Liu ,  Atsushi Yamaguchi ,  Yuhui Tang ,  Jiun-Ting Lee ,  Yaguang Wei ,  Xiaomin Liu ,  Hideyuki Ukita ,  Moris Dovek ,  Michitaka Nishiyama

    IPC: G11B5/31 ,  G11B5/127 ,  G11B5/60

    CPC classification number: G11B5/3116 ,  G11B5/00826 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/187 ,  G11B5/1871 ,  G11B5/23 ,  G11B5/315 ,  G11B5/3163 ,  G11B5/3912 ,  G11B5/6082

    Abstract: A PMR writer is disclosed wherein a hot seed layer (HS) made of a 19-24 kilogauss (kG) magnetic material is formed between a gap layer and a 10-16 kG magnetic layer in the side shields, and between the leading gap and a 16-19 kG magnetic layer in the leading shield to improve Hy_grad and Hy_grad_x while maintaining write-ability. The HS is from 10 to 100 nm thick and has a first side facing the write pole with a height of ≦0.15 micron, and a second side facing a main pole flared side that may extend to a full side shield height of ≦0.5 micron. First and second sides may form a continuous curve or a double tapered design where first and second sides have different angles with respect to a center plane. The side shield design described herein is especially beneficial for side gaps of 20-60 nm.

    Abstract translation: 公开了一种PMR写入器，其中在侧面屏蔽之间的间隙层和10-16kG磁性层之间以及在前导间隙和第二磁性层之间形成由19-24千兆（kG）磁性材料制成的热种子层（HS） 一个16-19 kG的磁屏蔽层，在保持写入能力的同时提高Hy_grad和Hy_grad_x。 HS为10至100nm厚，并且具有面向高度≤0.15微米的写极的第一面和面向主极扩张侧的第二面，其可延伸至≤0.5微米的全侧屏蔽高度。 第一和第二侧可以形成连续曲线或双锥形设计，其中第一和第二侧相对于中心平面具有不同的角度。 本文所述的侧面屏蔽设计对于20-60nm的侧面间隙特别有利。

    Thin film magnetic head, head gimbal assembly, and magnetic recording device
    4.
    发明授权
    Thin film magnetic head, head gimbal assembly, and magnetic recording device 有权
    薄膜磁头，磁头万向节组件和磁记录装置

    公开(公告)号：US09082432B1

    公开(公告)日：2015-07-14

    申请号：US14467231

    申请日：2014-08-25

    Applicant: TDK Corporation

    Inventor： Yuji Matsuura ,  Atsushi Yamaguchi ,  Michitaka Nishiyama ,  Yumiko Yokoyama ,  Yuki Nishimura ,  Ittetsu Kitajima

    IPC: G11B5/31 ,  G11B5/127

    CPC classification number: G11B5/3116 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/3163

    Abstract: A thin film magnetic head has a main magnetic pole layer; a first trailing shield that is positioned at the trailing side of the main magnetic pole layer, and that is close to the main magnetic pole layer; and a second trailing shield that is positioned at the trailing side of the first trailing shield, and that continues to the first trailing shield. An end surface of the second trailing shield positioned at the back side in the height direction has a first end side positioned at a medium opposing surface side, and a second end side positioned at the further back side in the height direction than the first end side, and at the trailing side closer than the first end side. An angle formed by a plane including the first end side and the second end side and a plane parallel to both the height direction and the track width direction is 30 degrees to 60 degrees.

    Abstract translation: 薄膜磁头具有主磁极层; 位于主磁极层的后侧并且靠近主磁极层的第一尾部屏蔽件; 以及位于所述第一后挡板的后侧并且继续到所述第一后挡板的第二后挡板。 位于高度方向后侧的第二后挡板的端面具有位于介质相对表面侧的第一端侧和位于高度方向上比第一端侧更靠后侧的第二端侧 ，并且在比第一端侧更靠近的后侧。 由包括第一端侧和第二端侧的平面和平行于高度方向和轨道宽度方向的平面形成的角度为30度至60度。

    Perpendicular magnetic recording head and magnetic recording unit having leading shield including exposed end surface and recess shield including mid part
    7.
    发明授权
    Perpendicular magnetic recording head and magnetic recording unit having leading shield including exposed end surface and recess shield including mid part 有权
    垂直磁记录头和磁记录单元，其具有包括暴露的端表面和包括中间部分的凹槽屏蔽的前屏蔽

    公开(公告)号：US09153253B2

    公开(公告)日：2015-10-06

    申请号：US14150259

    申请日：2014-01-08

    Applicant: TDK CORPORATION

    Inventor： Atsushi Yamaguchi ,  Atsushi Matsuo ,  Yuji Matsuura ,  Michitaka Nishiyama ,  Yumiko Yokoyama

    IPC: G11B5/11 ,  G11B5/147 ,  G11B5/127 ,  G11B5/60 ,  G11B5/31

    CPC classification number: G11B5/1278 ,  G11B5/11 ,  G11B5/315 ,  G11B5/6082

    Abstract: The perpendicular magnetic recording head includes: a magnetic pole including an end surface exposed on an air bearing surface, and extending in a height direction perpendicular to the air bearing surface; a leading shield including an end surface exposed on the air bearing surface; a leading gap provided between the magnetic pole and the leading shield; and a recess shield including a mid-part and other parts, and provided at a position on a side opposite to the magnetic pole with the leading shield in between, the mid-part being distanced from the leading shield in a track width direction, the other parts being in contact with the leading shield, and the position being recessed from the air bearing surface.

    Abstract translation: 垂直磁记录头包括：磁极，其包括暴露在空气轴承表面上的端面，并且在垂直于空气轴承表面的高度方向上延伸; 包括暴露在空气轴承表面上的端面的前导屏蔽; 在磁极和前导屏蔽之间提供前导间隙; 以及包括中间部分和其他部分的凹槽屏蔽，并且设置在与磁极相对的一侧的位置处与前屏蔽件之间，中间部分在磁道宽度方向上与前屏蔽件间隔开， 其他部分与前导罩接触，并且该位置从空气轴承表面凹陷。

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