公开(公告)号：US20110002063A1

公开(公告)日：2011-01-06

申请号：US12827999

申请日：2010-06-30

申请人： Yohji Maruyama ,  Tadayuki Iwakura ,  Tetsuya Okai ,  Hiromi Shiina ,  Kazue Kudo

发明人： Yohji Maruyama ,  Tadayuki Iwakura ,  Tetsuya Okai ,  Hiromi Shiina ,  Kazue Kudo

IPC分类号： G11B21/02 ,  G11B5/33

CPC分类号： G11B5/3116 ,  G11B5/112 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163

摘要： According to one embodiment, a perpendicular magnetic recording head includes a main magnetic pole having a trailing side and two lateral sides, a magnetic shield near the trailing side and both lateral sides of the main magnetic pole, the magnetic shield comprising: a first soft magnetic film with a relatively high saturation flux density positioned facing depthwise from a floating surface side thereof, a second soft magnetic film with a relatively low saturation flux density, and a first non-magnetic film. The head also includes a non-magnetic film interposed between the magnetic shield and the main magnetic pole, a first magnetic film magnetically coupled to the magnetic shield and the main magnetic pole on a side opposite a floating surface side thereof, and a coil surrounding a magnetic circuit, the magnetic circuit comprising the main magnetic pole and the first magnetic film. Other systems and methods are also described.

摘要翻译： 根据一个实施例，垂直磁记录头包括具有后侧和两个侧面的主磁极，靠近主磁极的后侧和两侧的磁屏蔽，磁屏蔽包括：第一软磁 具有从其浮动表面侧朝向深度方向定位的相对较高的饱和磁通密度的膜，具有相对低的饱和磁通密度的第二软磁膜和第一非磁性膜。 头部还包括插入在磁屏蔽和主磁极之间的非磁性膜，磁性地耦合到磁屏蔽的第一磁性膜和与其浮动表面侧相对的一侧的主磁极，以及围绕 所述磁路包括所述主磁极和所述第一磁性膜。 还描述了其它系统和方法。

公开(公告)号：US08542462B2

公开(公告)日：2013-09-24

申请号：US12827999

申请日：2010-06-30

申请人： Yohji Maruyama ,  Tadayuki Iwakura ,  Tetsuya Okai ,  Hiromi Shiina ,  Kazue Kudo

发明人： Yohji Maruyama ,  Tadayuki Iwakura ,  Tetsuya Okai ,  Hiromi Shiina ,  Kazue Kudo

IPC分类号： G11B5/127

CPC分类号： G11B5/3116 ,  G11B5/112 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163

摘要： According to one embodiment, a perpendicular magnetic recording head includes a main magnetic pole having a trailing side and two lateral sides, a magnetic shield near the trailing side and both lateral sides of the main magnetic pole, the magnetic shield comprising: a first soft magnetic film with a relatively high saturation flux density positioned facing depthwise from a floating surface side thereof, a second soft magnetic film with a relatively low saturation flux density, and a first non-magnetic film. The head also includes a non-magnetic film interposed between the magnetic shield and the main magnetic pole, a first magnetic film magnetically coupled to the magnetic shield and the main magnetic pole on a side opposite a floating surface side thereof, and a coil surrounding a magnetic circuit, the magnetic circuit comprising the main magnetic pole and the first magnetic film. Other systems and methods are also described.

摘要翻译： 根据一个实施例，垂直磁记录头包括具有后侧和两个侧面的主磁极，靠近主磁极的后侧和两侧的磁屏蔽，磁屏蔽包括：第一软磁 具有从其浮动表面侧朝向深度方向定位的相对较高的饱和磁通密度的膜，具有相对低的饱和磁通密度的第二软磁膜和第一非磁性膜。 头部还包括插入在磁屏蔽和主磁极之间的非磁性膜，磁性地耦合到磁屏蔽的第一磁性膜和与其浮动表面侧相对的一侧的主磁极，以及围绕 所述磁路包括所述主磁极和所述第一磁性膜。 还描述了其它系统和方法。

公开(公告)号：US08300358B2

公开(公告)日：2012-10-30

申请号：US12070155

申请日：2008-02-15

申请人： Yohji Maruyama ,  Tadayuki Iwakura ,  Kimitoshi Etoh ,  Hiromi Shiina ,  Kazue Kudo

发明人： Yohji Maruyama ,  Tadayuki Iwakura ,  Kimitoshi Etoh ,  Hiromi Shiina ,  Kazue Kudo

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/112 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163

摘要： Embodiments of the present invention help to suppress broadening of a write field of a main pole of a perpendicular recording head and realize high-quality write operation. According to one embodiment, a main pole of a write head extends to an air bearing surface or a medium-facing surface and has an inverted trapezoid in cross-section. First soft magnetic films called side shields are separately disposed through a nonmagnetic film on both sides of the main pole. The air bearing surface side end of the first soft magnetic film is provided to recede from the air bearing surface. The first soft magnetic film and the main pole are formed in the same layer. A second soft magnetic film called a trailing shield is provided above the main pole on the air bearing surface side via a nonmagnetic film.

摘要翻译： 本发明的实施例有助于抑制垂直记录头的主极的写入场的扩展，并且实现高质量的写入操作。 根据一个实施例，写入头的主极延伸到空气轴承表面或中等的表面，并且具有横截面的倒梯形。 称为侧屏的第一软磁膜通过主极两侧的非磁性膜分开设置。 第一软磁性膜的空气轴承面侧端设置为从空气轴承面退回。 第一软磁膜和主极形成在同一层中。 被称为后挡板的第二软磁膜通过非磁性膜设置在空气支承面侧的主极上方。

公开(公告)号：US20110141615A1

公开(公告)日：2011-06-16

申请号：US12965277

申请日：2010-12-10

申请人： Kazue Kudo ,  Hiromi Shiina ,  Yohji Maruyama ,  Shouji Tokutake ,  Tetsuya Okai

发明人： Kazue Kudo ,  Hiromi Shiina ,  Yohji Maruyama ,  Shouji Tokutake ,  Tetsuya Okai

IPC分类号： G11B21/02 ,  G11B5/33

CPC分类号： G11B5/1278 ,  G11B5/11 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163 ,  G11B5/6005 ,  Y10T428/11 ,  Y10T428/1171

摘要： According to one embodiment, a magnetic head for perpendicular recording includes a main pole, a first soft magnetic film disposed on a trailing side of the main pole, and a first nonmagnetic film interposed between the main pole and the first soft magnetic film. A thickness of the main pole is increased in a depth direction from an air bearing surface using an inclination, and a thickness of the first nonmagnetic film increases in the depth direction from the air bearing surface. In another embodiment, an angle from a horizontal plane of an upper surface of the first nonmagnetic film is greater than an angle from a horizontal plane of a lower surface of the first nonmagnetic film in contact with the main pole. Other heads, methods, and systems are described according to more embodiments.

摘要翻译： 根据一个实施例，用于垂直记录的磁头包括主极，设置在主极的后侧的第一软磁膜和插在主极和第一软磁膜之间的第一非磁性膜。 主轴的厚度使用倾斜从空气轴承面在深度方向上增大，第一非磁性膜的厚度在空气轴承面的深度方向上增大。 在另一个实施例中，与第一非磁性膜的上表面的水平面的角度大于与主极接触的第一非磁性膜的下表面的水平面的角度。 根据更多实施例描述其它头，方法和系统。

公开(公告)号：US20100157476A1

公开(公告)日：2010-06-24

申请号：US12638911

申请日：2009-12-15

申请人： Kazue Kudo ,  Hiromi Shiina ,  Yohji Maruyama ,  Tetsuya Okai ,  Gen Oikawa ,  Shouji Tokutake

发明人： Kazue Kudo ,  Hiromi Shiina ,  Yohji Maruyama ,  Tetsuya Okai ,  Gen Oikawa ,  Shouji Tokutake

IPC分类号： G11B5/147

CPC分类号： G11B5/1278 ,  G11B5/3116

摘要： A perpendicular magnetic recording head according to one embodiment includes a main pole; first magnetic films arranged on both sides of the main pole in a track width direction via nonmagnetic films; and a second magnetic film arranged on a trailing side of the main pole via a nonmagnetic film; wherein the depths of the first magnetic films from an air bearing surface are smaller than the depth of the second magnetic film from the air bearing surface at least at a periphery of the main pole. A perpendicular magnetic recording head according to another embodiment includes a main pole; first magnetic films arranged on both sides of the main pole in a track width direction via nonmagnetic films; and a second magnetic film arranged on a trailing side of the main pole via a nonmagnetic film; wherein the main pole and the first magnetic films have respective tapered portions whose thicknesses become larger toward the side opposite to an air bearing surface, and the tapered portions are in contact with the second magnetic film. Additional embodiments are also presented.

摘要翻译： 根据一个实施例的垂直磁记录头包括主极; 通过非磁性膜在磁道宽度方向上布置在主极两侧的第一磁膜; 以及通过非磁性膜布置在所述主极的后侧的第二磁性膜; 其中来自空气支承表面的第一磁性膜的深度至少在主极的周边处小于来自空气支承表面的第二磁性膜的深度。 根据另一实施例的垂直磁记录头包括主极; 通过非磁性膜在磁道宽度方向上布置在主极两侧的第一磁膜; 以及通过非磁性膜布置在所述主极的后侧的第二磁性膜; 其中，所述主极和所述第一磁性膜具有各自的锥形部分，所述锥形部分的厚度朝着与空气支承表面相对的一侧变大，并且所述锥形部分与所述第二磁性膜接触。 还提供了另外的实施例。

公开(公告)号：US08537493B2

公开(公告)日：2013-09-17

申请号：US12965277

申请日：2010-12-10

申请人： Kazue Kudo ,  Hiromi Shiina ,  Yohji Maruyama ,  Shouji Tokutake ,  Tetsuya Okai

发明人： Kazue Kudo ,  Hiromi Shiina ,  Yohji Maruyama ,  Shouji Tokutake ,  Tetsuya Okai

IPC分类号： G11B5/23 ,  G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/11 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163 ,  G11B5/6005 ,  Y10T428/11 ,  Y10T428/1171

摘要： According to one embodiment, a magnetic head for perpendicular recording includes a main pole, a first soft magnetic film disposed on a trailing side of the main pole, and a first nonmagnetic film interposed between the main pole and the first soft magnetic film. A thickness of the main pole is increased in a depth direction from an air bearing surface using an inclination, and a thickness of the first nonmagnetic film increases in the depth direction from the air bearing surface. In another embodiment, an angle from a horizontal plane of an upper surface of the first nonmagnetic film is greater than an angle from a horizontal plane of a lower surface of the first nonmagnetic film in contact with the main pole. Other heads, methods, and systems are described according to more embodiments.

摘要翻译： 根据一个实施例，用于垂直记录的磁头包括主极，设置在主极的后侧的第一软磁膜和插在主极和第一软磁膜之间的第一非磁性膜。 主轴的厚度使用倾斜从空气轴承面在深度方向上增大，第一非磁性膜的厚度在空气轴承面的深度方向上增大。 在另一个实施例中，与第一非磁性膜的上表面的水平面的角度大于与主极接触的第一非磁性膜的下表面的水平面的角度。 根据更多实施例描述其它头，方法和系统。

公开(公告)号：US08351156B2

公开(公告)日：2013-01-08

申请号：US12638911

申请日：2009-12-15

申请人： Kazue Kudo ,  Hiromi Shiina ,  Yohji Maruyama ,  Tetsuya Okai ,  Gen Oikawa ,  Shouji Tokutake

发明人： Kazue Kudo ,  Hiromi Shiina ,  Yohji Maruyama ,  Tetsuya Okai ,  Gen Oikawa ,  Shouji Tokutake

IPC分类号： G11B5/127 ,  G11B5/187

CPC分类号： G11B5/1278 ,  G11B5/3116

摘要： A perpendicular magnetic recording head according to one embodiment includes a main pole; first magnetic films arranged on both sides of the main pole in a track width direction via nonmagnetic films; and a second magnetic film arranged on a trailing side of the main pole via a nonmagnetic film; wherein the depths of the first magnetic films from an air bearing surface are smaller than the depth of the second magnetic film from the air bearing surface at least at a periphery of the main pole. A perpendicular magnetic recording head according to another embodiment includes a main pole; first magnetic films arranged on both sides of the main pole in a track width direction via nonmagnetic films; and a second magnetic film arranged on a trailing side of the main pole via a nonmagnetic film; wherein the main pole and the first magnetic films have respective tapered portions whose thicknesses become larger toward the side opposite to an air bearing surface, and the tapered portions are in contact with the second magnetic film. Additional embodiments are also presented.

摘要翻译： 根据一个实施例的垂直磁记录头包括主极; 通过非磁性膜在磁道宽度方向上布置在主极两侧的第一磁膜; 以及通过非磁性膜布置在所述主极的后侧的第二磁性膜; 其中来自空气支承表面的第一磁性膜的深度至少在主极的周边处小于来自空气支承表面的第二磁性膜的深度。 根据另一实施例的垂直磁记录头包括主极; 通过非磁性膜在磁道宽度方向上布置在主极两侧的第一磁膜; 以及通过非磁性膜布置在所述主极的后侧的第二磁性膜; 其中，所述主极和所述第一磁性膜具有各自的锥形部分，所述锥形部分的厚度朝着与空气支承表面相对的一侧变大，并且所述锥形部分与所述第二磁性膜接触。 还提供了另外的实施例。

公开(公告)号：US08570683B2

公开(公告)日：2013-10-29

申请号：US13168083

申请日：2011-06-24

申请人： Yusuke Takahashi ,  Hiromi Shiina ,  Kazue Kudo ,  Yohji Maruyama ,  Kaori Suzuki

发明人： Yusuke Takahashi ,  Hiromi Shiina ,  Kazue Kudo ,  Yohji Maruyama ,  Kaori Suzuki

IPC分类号： G11B5/127

CPC分类号： G11B5/3116 ,  G11B5/1278

摘要： In one embodiment, a perpendicular magnetic head includes a main magnetic pole, a side shield disposed on both sides of the main magnetic pole in a track width direction, the side shield including a material having a saturation magnetic flux density of no greater than about 1.0 T, and a trailing shield disposed on a trailing side of the main magnetic pole, wherein the trailing shield and the side shield are physically separated from one another. In another embodiment, the side shield includes a first magnetic film, and the trailing shield includes a second magnetic film, wherein a magnetic permeability of the first magnetic film is lower than a magnetic permeability of the second magnetic film.

摘要翻译： 在一个实施例中，垂直磁头包括主磁极，设置在主磁极的轨道宽度方向两侧的侧屏蔽，侧屏蔽包括饱和磁通密度不大于约1.0的材料 T和设置在主磁极的后侧的后屏蔽，其中后屏蔽和侧屏在物理上彼此分离。 在另一个实施例中，侧屏蔽包括第一磁性膜，并且后屏蔽包括第二磁性膜，其中第一磁性膜的磁导率低于第二磁性膜的磁导率。

公开(公告)号：US08189293B1

公开(公告)日：2012-05-29

申请号：US13096775

申请日：2011-04-28

申请人： Yasuhiro Wakabayashi ,  Kazue Kudo ,  Shouji Tokutake ,  Hiromi Shiina ,  Yohji Maruyama

发明人： Yasuhiro Wakabayashi ,  Kazue Kudo ,  Shouji Tokutake ,  Hiromi Shiina ,  Yohji Maruyama

IPC分类号： G11B5/31

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

摘要： According to one embodiment, a perpendicular magnetic recording head includes a shield having a groove and a main magnetic pole positioned in the groove of the shield. The groove includes a bottom side near a leading edge of the shield and inclined sides extending from the bottom side toward a trailing edge of the shield and from an ABS side of the head to a recessed side of the shield opposite the ABS. The shield is coupled to a non-magnetic layer at the recessed side, a cross-sectional area of the groove is less at a position nearer to the substrate than a position farther from the substrate, a cross-sectional area of the groove is less at a position nearer to the ABS side of the shield than a position farther from the ABS side of the shield, and a portion of the sides of the groove have curved surfaces.

摘要翻译： 根据一个实施例，垂直磁记录头包括具有凹槽和位于屏蔽的槽中的主磁极的屏蔽。 凹槽包括靠近屏蔽件前缘的底侧和从屏蔽的底侧向后缘延伸的倾斜侧和从头部的ABS侧到与ABS相对的屏蔽件的凹入侧。 屏蔽层在凹陷侧耦合到非磁性层，在远离基板的位置处，在较靠近基板的位置处的沟槽的横截面积较小，凹槽的横截面积较小 在远离防护罩的ABS侧的位置更靠近防护罩的ABS侧的位置处，并且槽的一部分侧面具有曲面。

公开(公告)号：US08064161B2

公开(公告)日：2011-11-22

申请号：US12231246

申请日：2008-08-28

申请人： Kazue Kudo ,  Hiromi Shiina ,  Gen Oikawa ,  Yohji Maruyama ,  Noriyuki Saiki

发明人： Kazue Kudo ,  Hiromi Shiina ,  Gen Oikawa ,  Yohji Maruyama ,  Noriyuki Saiki

IPC分类号： H04R31/00 ,  G11B5/147

CPC分类号： G11B5/3146 ,  G11B5/1278 ,  G11B5/315 ,  G11B5/3163 ,  Y10T29/49044 ,  Y10T29/4906

摘要： Embodiments of the present invention help to provide a perpendicular magnetic recording head capable of writing a signal in a track having a small width. According to one embodiment, a perpendicular magnetic recording head includes an auxiliary pole, a main pole, a yoke, a coil, a first soft magnetic film and a second soft magnetic film. The yoke is in contact with the main pole. The coil is wound around a magnetic circuit composed of the auxiliary and main poles and the yoke. The first soft magnetic film is provided on both sides of the main pole with a non-magnetic film provided between the first soft magnetic film and the main pole. The second soft magnetic film is provided on the trailing side of the main pole with the non-magnetic film provided between the second soft magnetic film and the main pole. The first and second soft magnetic films are two types of plated magnetic films. One type of the plated magnetic films have respective thicknesses of 0.5 nm to 20 nm and respective body centered cubic lattice crystal structures. The other types of the plated magnetic films have respective thicknesses of 0.5 nm to 20 nm and respective face centered cubic lattice crystal structures. The two types of the plated magnetic films are alternately laminated with four or more layers. This can achieve the magnetic disk drive capable of reducing a possibility to erroneously delete a signal after the signal being written and preventing degradation of characteristics of a high frequency signal.

摘要翻译： 本发明的实施例有助于提供一种能够在具有小宽度的轨迹中写入信号的垂直磁记录头。 根据一个实施例，垂直磁记录头包括辅助极，主极，磁轭，线圈，第一软磁膜和第二软磁膜。 轭与主极接触。 线圈缠绕在由辅助和主极和轭构成的磁路上。 第一软磁膜设置在主极的两侧，设置在第一软磁膜和主极之间的非磁性膜。 第二软磁膜设置在主极的后侧，设置在第二软磁膜和主极之间的非磁性膜。 第一和第二软磁膜是两种类型的镀覆磁性膜。 一种类型的电镀磁性膜具有0.5nm至20nm的各自的厚度和相应的体心立方晶格结构。 其他类型的镀膜磁性膜具有0.5nm至20nm的各自的厚度和各自的面心立方晶格结构。 两种类型的镀覆磁性膜交替地层压有四层或更多层。 这可以实现能够降低信号被写入之后错误地删除信号的可能性的磁盘驱动器，并且防止高频信号的特性的劣化。