公开(公告)号：US20130057981A1

公开(公告)日：2013-03-07

申请号：US13226377

申请日：2011-09-06

Applicant: Yosuke Urakami ,  Kazue Kudo ,  Hiromi Shiina ,  Masafumi Mochizuki ,  Shouji Tokutake

Inventor： Yosuke Urakami ,  Kazue Kudo ,  Hiromi Shiina ,  Masafumi Mochizuki ,  Shouji Tokutake

IPC: G11B5/00 ,  G11B5/127

CPC classification number: G11B5/1278 ,  G11B5/012 ,  G11B5/23 ,  G11B5/3116 ,  G11B5/315

Abstract: In one embodiment, a magnetic head includes a main pole, a trailing shield positioned near a trailing side of the main pole, a side shield positioned near both sides of the main pole in a cross-track direction, a leading shield positioned near a leading side of the main pole, and a gap positioned between the main pole and the shields, characterized in that Sg1

Abstract translation: 在一个实施例中，磁头包括主极，位于主极的后侧附近的后屏蔽，位于主磁极两侧的跨屏蔽方向的侧屏蔽，位于导线 主极之间的间隙，以及位于主极与屏蔽之间的间隙，其特征在于，Sg1

公开(公告)号：US20110141615A1

公开(公告)日：2011-06-16

申请号：US12965277

申请日：2010-12-10

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

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

IPC: G11B21/02 ,  G11B5/33

CPC classification number: G11B5/1278 ,  G11B5/11 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163 ,  G11B5/6005 ,  Y10T428/11 ,  Y10T428/1171

Abstract: 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.

Abstract translation: 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：US20110002063A1

公开(公告)日：2011-01-06

申请号：US12827999

申请日：2010-06-30

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

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

IPC: G11B21/02 ,  G11B5/33

CPC classification number: G11B5/3116 ,  G11B5/112 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163

Abstract: 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.

Abstract translation: 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：US20100157476A1

公开(公告)日：2010-06-24

申请号：US12638911

申请日：2009-12-15

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

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

IPC: G11B5/147

CPC classification number: G11B5/1278 ,  G11B5/3116

Abstract: 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.

Abstract translation: 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：US07589937B2

公开(公告)日：2009-09-15

申请号：US10894723

申请日：2004-07-19

Applicant: Gen Oikawa ,  Kazue Kudo ,  Youji Maruyama ,  Noriyuki Saiki ,  Hiromi Shiina

Inventor： Gen Oikawa ,  Kazue Kudo ,  Youji Maruyama ,  Noriyuki Saiki ,  Hiromi Shiina

IPC: G11B5/127

CPC classification number: G11B5/3116 ,  G11B5/147 ,  Y10T29/49032

Abstract: Embodiments of the invention provide a lustrous and uniform plating film having high-performance magnetic characteristics and a thin film magnetic head usable in a high frequency recording band by using the plating film of the invention at a magnetic pole portion. Plating is performed in a plating bath at a low pH of about 1.5 to 2.3. The accuracy of pH control is improved. A magnetic film with the addition of a high resistive metal such as Cr or Mo is formed under the plating condition. Further, the magnetic characteristic is improved by applying a heat treatment to the plating film in a magnetic field, according to specific embodiments of the present invention. A plating film with brightness and uniformity having high saturation magnetic flux density can be formed by reducing the hysteresis loss and the eddy current loss as the magnetic characteristics by the above techniques.

Abstract translation: 本发明的实施例通过使用本发明的镀膜在磁极部分提供具有高性能磁特性的光泽均匀的镀膜和可用于高频记录带的薄膜磁头。 电镀在约1.5至2.3的低pH值的电镀浴中进行。 pH控制的准确性得到提高。 在电镀条件下形成具有添加诸如Cr或Mo的高电阻金属的磁性膜。 此外，根据本发明的具体实施方式，通过在磁场中对镀膜进行热处理来提高磁特性。 通过上述技术，可以通过减小作为磁特性的磁滞损耗和涡流损耗来形成具有高饱和磁通密度的亮度和均匀性的电镀膜。

公开(公告)号：US07333301B2

公开(公告)日：2008-02-19

申请号：US10650832

申请日：2003-08-29

Applicant: Kimitoshi Etoh ,  Nobuo Yoshida ,  Moriaki Fuyama ,  Makoto Morijiri ,  Kenichi Meguro ,  Ichiro Oodake ,  Kazue Kudo ,  Yohji Maruyama ,  Katsuro Watanabe

Inventor： Kimitoshi Etoh ,  Nobuo Yoshida ,  Moriaki Fuyama ,  Makoto Morijiri ,  Kenichi Meguro ,  Ichiro Oodake ,  Kazue Kudo ,  Yohji Maruyama ,  Katsuro Watanabe

IPC: G11B5/127

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/3136 ,  G11B5/3909 ,  G11B5/3912 ,  Y10T29/49044

Abstract: A thin-film magnetic head having little temperature rise in the element, good heat dissipation and a short magnetic path length (narrow coil pitch) and manufacturing method for same is provided. To form the coil of the thin-film magnetic head, a lower coil is first formed and after forming alumina and an inorganic compound containing alumina, a trench is formed for the upper coil by reactive ion etching. The lower coil allows uniform etching at this time and functions as a film to prevent loading effects occurring during reactive ion etching. This trench is then plated in copper and chemical mechanical planarization performed to form the upper layer coil as the dual-layer coil of the present invention. Heat from the coil is efficiently radiated towards the substrate by alumina and an inorganic compound containing alumina with good heat propagation. The ratio of alumina or inorganic compound containing alumina in the lower coil can be selected by reactive ion etching so that an upper coil trench functioning as an etching stopper can be securely formed to allow forming a stable coil film thickness and a short magnetic path length.

Abstract translation: 提供元件温度上升较小，散热好，磁路长度短（窄线圈间距）及其制造方法的薄膜磁头。 为了形成薄膜磁头的线圈，首先形成下线圈，在形成氧化铝和含有氧化铝的无机化合物之后，通过反应离子蚀刻形成用于上部线圈的沟槽。 此时，下线圈允许均匀刻蚀，起到膜的作用，以防止在反应离子蚀刻期间发生的负载效应。 然后将该沟槽镀铜并进行化学机械平面化以形成上层线圈作为本发明的双层线圈。 来自线圈的热量通过氧化铝和含有良好热传播的氧化铝的无机化合物有效地朝向基板辐射。 可以通过反应离子蚀刻来选择下层线圈中的氧化铝或含有氧化铝的无机化合物的比例，从而可以可靠地形成用作蚀刻停止层的上部线圈沟槽，以形成稳定的线圈膜厚度和短的磁路长度。

公开(公告)号：US07054106B2

公开(公告)日：2006-05-30

申请号：US10354989

申请日：2003-01-31

Applicant: Kazue Kudo ,  Yoshiaki Kawato ,  Kazuhiro Nakamoto ,  Nobuo Yoshida ,  Kimitoshi Etoh

Inventor： Kazue Kudo ,  Yoshiaki Kawato ,  Kazuhiro Nakamoto ,  Nobuo Yoshida ,  Kimitoshi Etoh

IPC: G11B5/147

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/024 ,  G11B5/313 ,  G11B5/3156 ,  G11B5/3163 ,  G11B5/3967 ,  G11B5/465 ,  G11B2005/0008 ,  G11B2005/0013 ,  G11B2005/3996

Abstract: Disclosed herein is a magnetic head for perpendicular recording in which the main magnetic pole has reduced remanent magnetization and is less liable to cause erasure after recording. These characteristic properties were realized by constructing the magnetic head such that the recording magnetic pole and the yoke are separate from each other and the main magnetic pole is formed from a material with a high saturation magnetic flux density and the yoke is formed from a material having a negative magnetostriction constant.

Abstract translation: 这里公开了一种用于垂直记录的磁头，其中主磁极具有降低的剩磁，并且在记录之后不易引起擦除。 这些特性是通过构造磁头来实现的，使得记录磁极和磁轭彼此分离，并且主磁极由具有高饱和磁通密度的材料形成，并且磁轭由具有 负磁致伸缩常数。

公开(公告)号：USD264363S

公开(公告)日：1982-05-11

申请号：US115987

申请日：1980-01-28

Applicant: Kazue Kudo

Designer： Kazue Kudo

公开(公告)号：USD261164S

公开(公告)日：1981-10-06

申请号：US85060

申请日：1979-10-15

Applicant: Kazue Kudo

Designer： Kazue Kudo

公开(公告)号：US08570686B2

公开(公告)日：2013-10-29

申请号：US13419283

申请日：2012-03-13

Applicant: Kazuhiko Hosomi ,  Kimitoshi Eto ,  Mikito Sugiyama ,  Junichi Hashimoto ,  Kazue Kudo ,  Misuzu Kanai

Inventor： Kazuhiko Hosomi ,  Kimitoshi Eto ,  Mikito Sugiyama ,  Junichi Hashimoto ,  Kazue Kudo ,  Misuzu Kanai

IPC: G11B5/33

CPC classification number: G11B5/235 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/3163

Abstract: A magnetic write head having a shield structure that provides both a leading shield and side shielding function. The magnetic shield is separated from the sides and leading edge of the write pole by a non-magnetic gap layer that has a non-uniform thickness. The non-magnetic gap layer is thicker near the leading edge and thinner at the trailing edge. This allows for increased side field gradient near the trailing edge of the write pole and decreased write field loss at the leading edge of the write pole.

Abstract translation: 具有提供前屏蔽和侧屏蔽功能的屏蔽结构的磁写头。 磁屏蔽通过非均匀厚度的非磁性间隙层与写磁极的侧边和前边缘分开。 非磁性间隙层在前缘附近较厚，在后缘较薄。 这允许在写入极的后沿附近增加的侧场梯度，并且在写入极的前沿减小写入场损耗。