公开(公告)号：US20140285919A1

公开(公告)日：2014-09-25

申请号：US13849784

申请日：2013-03-25

Applicant: TDK CORPORATION

Inventor： Kosuke TANAKA ,  Susumu AOKI ,  Keita KAWAMORI ,  Hiroki KAWATO

IPC: G11B5/127

CPC classification number: G11B5/3163 ,  G11B5/1278 ,  G11B5/314 ,  G11B2005/0021

Abstract: The thermally-assisted magnetic recording head includes: a magnetic pole having an end exposed on an air-bearing surface; a waveguide; a plasmon generator formed essentially of a first metallic material, and having a first region and a second region, the first region extending backward from the air-bearing surface to a first position, and the second region being coupled with the first region at the first position and extending backward from the first position; and a metallic layer filling a part in the second region, and formed essentially of a second metallic material that has a higher melting temperature than a melting temperature of the first metallic material.

Abstract translation: 热辅助磁记录头包括：具有暴露在空气轴承表面上的端部的磁极; 波导; 基本上由第一金属材料形成并具有第一区域和第二区域的等离子体发生器，所述第一区域从空气支承表面向后延伸到第一位置，并且所述第二区域在第一区域与第一区域耦合 位置并从第一位置向后延伸; 以及填充在第二区域中的部分的金属层，并且基本上由具有比第一金属材料的熔融温度更高的熔融温度的第二金属材料形成。

公开(公告)号：US20230095583A1

公开(公告)日：2023-03-30

申请号：US17948486

申请日：2022-09-20

Applicant: TDK CORPORATION

Inventor： Keita KAWAMORI ,  Hiromichi UMEHARA

IPC: G01R33/09

Abstract: A magnetic sensor includes a plurality of resistor sections each including a plurality of MR elements, and a plurality of protruding surfaces each structured to cause the plurality of MR elements to detect a specific component of a target magnetic field. The plurality of MR elements are disposed dividedly in first to fourth areas corresponding to the respective resistor sections. Each of the first to fourth areas includes a first and a second end edge located at both ends in a first reference direction, and a third and a fourth end edge located at both ends in a second reference direction. An angle that each of the plurality of protruding surfaces forms with respect to the first end edge or the second end edge is larger than an angle that each of the plurality of protruding surfaces forms with respect to the third end edge or the fourth end edge.

公开(公告)号：US20230086267A1

公开(公告)日：2023-03-23

申请号：US17945397

申请日：2022-09-15

Applicant: TDK CORPORATION

Inventor： Hiromichi UMEHARA ,  Keita KAWAMORI ,  Kenzo MAKINO ,  Masachika HASHINO

IPC: G01R33/09 ,  G01R33/00

Abstract: A magnetic sensor includes an insulating layer, a first MR element, and a second MR element. The insulating layer includes a first layer and a second layer, and also includes first and second inclined surfaces formed across the first layer and the second layer. Each of the first and second MR elements includes a magnetization pinned layer and a free layer. The magnetization pinned layer and the free layer of the first MR element are disposed on the first inclined surface. The magnetization pinned layer and the free layer of the second MR element are disposed on the second inclined surface.

公开(公告)号：US20230091757A1

公开(公告)日：2023-03-23

申请号：US17947564

申请日：2022-09-19

Applicant: TDK CORPORATION

Inventor： Keita KAWAMORI ,  Hiraku HIRABAYASHI ,  Hiromichi UMEHARA

IPC: G01R33/09

Abstract: A magnetic sensor includes an insulating layer, a coil element disposed on the insulating layer, and a first insulating film. The insulating layer includes a first inclined surface and a second inclined surface. The coil element includes a first side surface and a second side surface. The first side surface includes a first portion and a second portion, the second portion being disposed at a position farther from a top surface of a substrate than a position where the first portion is disposed. The first portion is inclined so as to intersect with the first and second inclined surfaces, and is also inclined so as to be closer to the second side surface at positions closer to the top surface of the substrate. The first insulating film covers the first portion.

公开(公告)号：US20240094313A1

公开(公告)日：2024-03-21

申请号：US18524904

申请日：2023-11-30

Applicant: TDK Corporation

Inventor： Hiromichi UMEHARA ,  Keita KAWAMORI ,  Kenzo MAKINO ,  Masachika HASHINO

IPC: G01R33/09 ,  G01R33/00

CPC classification number: G01R33/093 ,  G01R33/0047

Abstract: A magnetic sensor includes an insulating layer, a first MR element, and a second MR element. The insulating layer includes a first layer and a second layer, and also includes first and second inclined surfaces formed across the first layer and the second layer. Each of the first and second MR elements includes a magnetization pinned layer and a free layer. The magnetization pinned layer and the free layer of the first MR element are disposed on the first inclined surface. The magnetization pinned layer and the free layer of the second MR element are disposed on the second inclined surface.

公开(公告)号：US20230086730A1

公开(公告)日：2023-03-23

申请号：US17945514

申请日：2022-09-15

Applicant: TDK CORPORATION

Inventor： Hiromichi UMEHARA ,  Keita KAWAMORI ,  Kenzo MAKINO ,  Masachika HASHINO

IPC: G01R33/09 ,  G01R33/00

Abstract: A magnetic sensor includes an insulating layer, a first MR element, and a second MR element. The insulating layer includes a protruding surface including first and second inclined surfaces. Each of the first and second MR elements includes a magnetization pinned layer and a free layer. The magnetization pinned layer and the free layer of the first MR element are disposed on the first inclined surface. The magnetization pinned layer and the free layer of the second MR element are disposed on the second inclined surface. The dimension of the protruding surface in a direction parallel to the Z direction is in the range of 1.4 µm to 3.0 µm.

公开(公告)号：US20200072664A1

公开(公告)日：2020-03-05

申请号：US16550371

申请日：2019-08-26

Applicant: TDK CORPORATION

Inventor： Naoki OHTA ,  Yuji KAKINUMA ,  Shinji HARA ,  Susumu AOKI ,  Keita KAWAMORI ,  Eiji KOMURA

IPC: G01J1/44 ,  H01L27/24 ,  H03F3/45 ,  G11C13/00 ,  H01L37/02 ,  H01L45/00

Abstract: A resistive element array circuit includes word lines, bit lines, resistive elements, a selector, a differential amplifier, and a ground terminal. The word lines are coupled to a power supply. The resistive elements are each disposed at an intersection of corresponding one of the word lines and corresponding one of the bit lines. The selector is configured to select one word line and one bit line. The differential amplifier includes a positive input terminal configured to be coupled to the selected one of the bit lines which is selected by the selector, a negative input terminal configured to be coupled to non-selected one of the bit lines which is not selected by the selector and to non-selected one of the word lines which is not selected by the selector, an output terminal being coupled to the negative input terminal. The ground terminal is coupled to the positive input terminal.

公开(公告)号：US20140286147A1

公开(公告)日：2014-09-25

申请号：US13849735

申请日：2013-03-25

Applicant: TDK Corporation

Inventor： Susumu AOKI ,  Kosuke TANAKA ,  Keita KAWAMORI ,  Hiroki KAWATO ,  Takeshi TSUTSUMI

IPC: G11B13/04 ,  G11B7/1387 ,  G21K1/00

CPC classification number: G21K1/00 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: The present invention relates to a plasmon generator, in which a surface plasmon is excited by application of light. The plasmon generator extends along one direction. The plasmon generator includes a first end surface that is positioned on one end in the one direction and at which near-field light is generated along with the excitation of the plasmon; and a second cross section that is substantially parallel to the first end surface and is away from the first end surface. The first end surface has a polygonal shape that does not have a substantially acute inner angle. The second cross section has an upper part that has a shape substantially the same as or similar to that of the first end surface and a flare shaped lower part that is connected to the upper part and has a width that increases as it is far from the upper part.

Abstract translation: 本发明涉及一种等离子体激元，其中通过施加光使表面等离子体激发。 等离子体发生器沿着一个方向延伸。 所述等离子体发生器包括位于一个方向的一端并与所述等离子体激元一起产生近场光的第一端面; 以及第二横截面，其基本上平行于第一端面并远离第一端面。 第一端面具有不具有基本上急剧的内角的多边形形状。 第二横截面具有与第一端面基本相同或类似的形状的上部，以及连接到上部的喇叭形下部，其宽度随着远离 上面的部分。