公开(公告)号：US06541104B2

公开(公告)日：2003-04-01

申请号：US09801955

申请日：2001-03-08

Applicant: Hideyuki Akimoto ,  Chiaki Okuyama ,  Iwao Okamoto

Inventor： Hideyuki Akimoto ,  Chiaki Okuyama ,  Iwao Okamoto

IPC: G11B566

CPC classification number: G11B5/66 ,  Y10S428/90 ,  Y10T428/24942 ,  Y10T428/24975 ,  Y10T428/265

Abstract: A magnetic recording medium has a construction in which on a non-magnetic support member are successively stacked a seed layer made of a non-magnetic material that is mainly composed of Cr, a keeper layer made of an NiFe-type soft magnetic material, an intermediate layer made of a non-magnetic material that is mainly composed of Cr and a recording layer made of a magnetic material that is mainly composed of Co.

Abstract translation: 磁记录介质具有以下结构：在非磁性支撑构件上依次堆叠由主要由Cr构成的非磁性材料制成的种子层，由NiFe型软磁性材料制成的保持层， 由主要由Cr组成的非磁性材料制成的中间层和由主要由Co组成的磁性材料制成的记录层

公开(公告)号：US20080118778A1

公开(公告)日：2008-05-22

申请号：US11982935

申请日：2007-11-05

Applicant: Hideyuki Akimoto ,  Naoki Mukoyama ,  Jun Masuko

Inventor： Hideyuki Akimoto ,  Naoki Mukoyama ,  Jun Masuko

IPC: G11B5/39

CPC classification number: G11B5/59683 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/39 ,  G11B5/3945 ,  H01F10/3218 ,  H01F10/3268 ,  H01L43/08 ,  Y10T428/1121

Abstract: A magnetoresistive reproducing head includes first and second free magnetic layers. A non-magnetic layer is provided between the first and second free magnetic layers. A bias applying layer having a single region applies a bias magnetic field in a direction perpendicular to the medium facing plane of the first free-magnetic layer and the second free-magnetic layer. An electrode is electrically connected to the first free-magnetic layer, the second free-magnetic layer, and the non-magnetic layer. In response to a magnetic field generated when a current is applied to the first free-magnetic layer, the second free-magnetic layer, and the non-magnetic layer in a direction perpendicular to the medium facing plane, magnetizations of the first free-magnetic and the second free-magnetic layer are tilted in opposite directions from a direction perpendicular to the medium facing plane.

Abstract translation: 磁阻再现头包括第一和第二自由磁性层。 在第一和第二自由磁性层之间提供非磁性层。 具有单个区域的偏置施加层在垂直于第一自由磁性层和第二自由磁性层的介质面向平面的方向上施加偏置磁场。 电极与第一自由磁性层，第二自由磁性层和非磁性层电连接。 响应于在与第一自由磁性层，第二自由磁性层和非磁性层垂直于介质面对平面的方向施加电流时产生的磁场，第一自由磁性层 并且第二自由磁性层从垂直于介质面对平面的方向向相反方向倾斜。

公开(公告)号：US20080074808A1

公开(公告)日：2008-03-27

申请号：US11710736

申请日：2007-02-26

Applicant: Hideyuki Akimoto ,  Naoki Mukoyama

Inventor： Hideyuki Akimoto ,  Naoki Mukoyama

IPC: G11B5/33

CPC classification number: G01R33/093 ,  B82Y25/00 ,  G11B5/3166 ,  G11B5/3932 ,  G11B5/455 ,  H01L43/08

Abstract: A magnetoresistive element 11 is formed with inclusion of a free layer 12, a pinned layer 13, an antiferromagnetic layer 14 for pinning the pinned layer 13, an intermediate layer 15 provided between the free layer 12 and the pinned layer 13, and a ferromagnetic layer 16 for applying a longitudinal bias magnetic field to the free layer. After initial magnetization, characteristic evaluation is conducted for the magnetoresistive element 11. Intensity of longitudinal bias field is adjusted by magnetizing again in a direction different from that of the initial magnetization, if required, on the basis of the evaluation result.

Abstract translation: 磁阻元件11形成为包括自由层12，钉扎层13，用于固定被钉扎层13的反铁磁层14，设置在自由层12和被钉扎层13之间的中间层15和铁磁层 16，用于将纵向偏置磁场施加到自由层。 在初始磁化之后，对磁阻元件11进行特性评估。 基于评估结果，如果需要，通过再次沿与初始磁化强度不同的方向再次磁化来调整纵向偏置场的强度。

公开(公告)号：US20080002306A1

公开(公告)日：2008-01-03

申请号：US11516938

申请日：2006-09-07

Applicant: Mitsuru Otagiri ,  Hideyuki Akimoto ,  Masaya Kato ,  Hiroshi Shirataki

Inventor： Mitsuru Otagiri ,  Hideyuki Akimoto ,  Masaya Kato ,  Hiroshi Shirataki

IPC: G11B5/33

CPC classification number: G11B5/398 ,  G11B5/112 ,  G11B5/3912

Abstract: The magnetic head is capable of preventing variation of magnetic fields working to a read-element, stably generating output signals and improving production yield. The magnetic head comprises: a read-head including a read-element; and a shield for magnetic-shielding the read-element, the shield has a hexagonal planar shape, and one side of the shield is flush with an air bearing surface of the magnetic head.

Abstract translation: 磁头能够防止作用于读取元件的磁场的变化，稳定地产生输出信号并提高产量。 磁头包括：包括读取元件的读取头; 以及用于屏蔽读取元件的屏蔽件，屏蔽件具有六边形平面形状，并且屏蔽件的一侧与磁头的空气轴承表面齐平。

公开(公告)号：US20070211379A1

公开(公告)日：2007-09-13

申请号：US11446529

申请日：2006-06-02

Applicant: Masaya Kato ,  Hiroshi Shirataki ,  Hideyuki Akimoto ,  Koichi Hirose

Inventor： Masaya Kato ,  Hiroshi Shirataki ,  Hideyuki Akimoto ,  Koichi Hirose

IPC: G11B5/147

CPC classification number: G11B5/1278 ,  G11B5/3163

Abstract: The perpendicular magnetic head is capable of solving the problem of pole-erasing and performing high density recording by a main magnetic pole. The perpendicular magnetic head comprises a write-head including a main magnetic pole, and the main magnetic pole is a magnetic thin film having magnetic anisotropy, in which a magnetizing direction is parallel to a recording surface of a recording medium.

Abstract translation: 垂直磁头能够解决主磁极的极擦除和高密度记录的问题。 垂直磁头包括具有主磁极的写入头，并且主磁极是具有磁各向异性的磁性薄膜，其中磁化方向平行于记录介质的记录表面。

公开(公告)号：US06534204B1

公开(公告)日：2003-03-18

申请号：US09405725

申请日：1999-09-24

Applicant: Hideyuki Akimoto ,  Yuki Yoshida ,  Kenji Sato ,  Iwao Okamoto

Inventor： Hideyuki Akimoto ,  Yuki Yoshida ,  Kenji Sato ,  Iwao Okamoto

IPC: G11B566

CPC classification number: G11B5/7325 ,  G11B5/66 ,  Y10S428/90

Abstract: There is provided a magnetic storage medium capable of recording information at high recording density and also regenerating the information with a high quality of signal (high S/Nm), and in addition contributing to the elongation of a life span of the recorded information. The magnetic storage medium comprises a non-magnetic substrate, a plurality of magnetic recording layers of ferromagnetism formed on the non-magnetic substrate, and a dividing layer of antiferromagnetism for dividing said plurality of magnetic recording layers from one another through intervening between the magnetic recording layer-to-layer.

Abstract translation: 提供了能够以高记录密度记录信息并且还以高质量信号（高S / Nm）再生信息的磁存储介质，并且还有助于延长记录信息的使用寿命。 磁存储介质包括非磁性衬底，形成在非磁性衬底上的多个磁性磁记录层，以及用于通过介于磁记录之间的方式将所述多个磁记录层彼此分开的反铁磁分隔层 层到层。

公开(公告)号：US6159420A

公开(公告)日：2000-12-12

申请号：US863034

申请日：1997-05-23

Applicant: Hideyuki Akimoto

Inventor： Hideyuki Akimoto

IPC: H01L21/60 ,  B23K20/00 ,  B23K35/30 ,  C22C5/02 ,  H01L23/49

CPC classification number: H01L24/85 ,  B23K20/007 ,  B23K35/3013 ,  C22C5/02 ,  H01L24/43 ,  H01L24/45 ,  H01L2224/05624 ,  H01L2224/43 ,  H01L2224/45015 ,  H01L2224/45144 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48465 ,  H01L2224/48624 ,  H01L2224/78301 ,  H01L2224/85045 ,  H01L2224/85181 ,  H01L2224/85203 ,  H01L2224/85205 ,  H01L24/78 ,  H01L2924/00011 ,  H01L2924/01004 ,  H01L2924/01005 ,  H01L2924/01013 ,  H01L2924/01019 ,  H01L2924/0102 ,  H01L2924/01023 ,  H01L2924/01027 ,  H01L2924/01033 ,  H01L2924/01039 ,  H01L2924/01046 ,  H01L2924/01057 ,  H01L2924/01079 ,  H01L2924/01082 ,  H01L2924/01083 ,  H01L2924/01204 ,  H01L2924/01205 ,  H01L2924/01327 ,  H01L2924/14 ,  H01L2924/20752 ,  H01L2924/20753

Abstract: A gold alloy wire in which 0.2 to 5.0% by weight of palladium (Pd) and 1 to 100 ppm by weight of bismuth (Bi) are added to gold having a purity of at least 99.99% by weight. Preferably, at least one element selected from the group consisting of yttrium (Y), lanthanum (La), calcium (Ca) and beryllium (Be) in an amount of 3 to 250 ppm by weight is further added to said gold. The gold alloy wire is especially adapted to forming a gold bump.

Abstract translation: 将纯度为99.99重量％以上的金加入金合金丝中，其中将0.2〜5.0重量％的钯（Pd）和1〜100重量ppm的铋（Bi）加入到金中。 优选地，进一步向所述金中加入选自钇（Y），镧（La），钙（Ca）和铍（Be）的至少一种元素，其量为3至250ppm重量。 金合金丝特别适合于形成金凸块。