公开(公告)号：US20180075868A1

公开(公告)日：2018-03-15

申请号：US15445822

申请日：2017-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Katsuhiko KOUI ,  Kenichiro YAMADA ,  Tomoko TAGUCHI

IPC: G11B5/39 ,  G11B5/127

CPC classification number: G11B5/3912 ,  G11B5/1278 ,  G11B5/1871 ,  G11B5/23 ,  G11B5/235 ,  G11B5/3116 ,  G11B5/3146 ,  G11B2005/0024

Abstract: A magnetic recording head includes a main magnetic pole extending to an air bearing surface of the magnetic recording head and having an end portion that is exposed at the air bearing surface, a magnetic shield having an end portion that is exposed at the air bearing surface and faces the end portion of the main magnetic pole with a gap therebetween, a stacked-layer element disposed in the gap, and including a first conductive layer in contact the main magnetic pole, a second conductive layer in contact with the magnetic shield, and an magnetic permeability adjusting layer disposed between the first conductive layer and the second conductive layer, and first and second terminals between which a current flows through the main magnetic pole, the stacked-layer element, and the magnetic shield when the current is supplied to one of the terminals.

公开(公告)号：US20150117168A1

公开(公告)日：2015-04-30

申请号：US14195126

申请日：2014-03-03

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Takuya MATSUMOTO ,  Tomoko TAGUCHI

IPC: G11B5/48 ,  G11B5/10

CPC classification number: G11B5/23 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A recording head for recording information on a rotating recording medium of a storage device includes a main magnetic pole which generates a recording magnetic field in a direction perpendicular to a recording medium facing surface of the magnetic recording head, and a light generating element which is provided on a leading side of the main magnetic pole, and generates light for heating the recording layer of the recording medium. The main magnetic pole includes an end surface facing the light generating element that is inclined with respect to the direction perpendicular to the recording medium facing surface toward the light generating element.

Abstract translation: 用于在存储装置的旋转记录介质上记录信息的记录头包括：在与磁记录头的记录介质相对表面垂直的方向上产生记录磁场的主磁极;以及发光元件， 在主磁极的前导侧，并产生用于加热记录介质的记录层的光。 主磁极包括面向发光元件的端面，其相对于垂直于与记录介质的表面朝着光产生元件的方向倾斜。

公开(公告)号：US20130163122A1

公开(公告)日：2013-06-27

申请号：US13773491

申请日：2013-02-21

Applicant: Kabushiki Kaisha Toshiba

Inventor： Masaya OHTAKE ,  Tomoko TAGUCHI ,  Masayuki TAKAGISHI ,  Kenichiro YAMADA ,  Katsuhiko KOUI

IPC: G11B5/31 ,  G11B5/74

CPC classification number: G11B5/1278 ,  B82Y10/00 ,  G11B5/02 ,  G11B5/314 ,  G11B5/3146 ,  G11B5/746 ,  G11B5/82 ,  G11B2005/0024

Abstract: According to one embodiment, a magnetic head includes a main pole configured to apply a perpendicular recording magnetic field to a recording layer of a recording medium, a return pole opposed to the trailing side of the main pole with a write gap therebetween and configured to reflux magnetic flux from the main pole to form a magnetic circuit in conjunction with the main pole, a coil configured to excite magnetic flux in the magnetic circuit includes the main pole and the return pole, a plurality of high-frequency oscillatory elements individually interposed between the main pole and the return pole, includes a plurality of magnetic films different in magnetic resonance frequency, and configured to individually apply high-frequency magnetic fields to the recording medium, and an electrical circuit configured to energize the high-frequency oscillatory elements.

Abstract translation: 根据一个实施例，磁头包括：主极，被配置为向记录介质的记录层施加垂直记录磁场;与主极的后侧相对的返回极，其间具有写入间隙，并且被配置为回流 来自主极的磁通量与主极结合形成磁路，构成为激励磁路中的磁通量的线圈包括主极和返回极，多个高频振荡元件分别插入在 主极和返回极包括不同于磁共振频率的多个磁膜，并且被配置为分别向记录介质施加高频磁场，以及电路，其被配置为对高频振荡元件通电。

公开(公告)号：US20140002924A1

公开(公告)日：2014-01-02

申请号：US13680363

申请日：2012-11-19

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kenichiro YAMADA ,  Takuya MATSUMOTO ,  Naoyuki NARITA ,  Tomoko TAGUCHI ,  Katsuhiko KOUI ,  Akihiko TAKEO

IPC: G11B5/17 ,  G11B19/20

CPC classification number: G11B5/17 ,  G11B5/1278 ,  G11B5/3123 ,  G11B19/2009 ,  G11B2005/0005

Abstract: According to one embodiment, a magnetic recording head includes a disk-facing surface configured to face a recording layer of a recording medium, a main magnetic pole includes a distal end located on the disk-facing surface and configured to apply a recording magnetic field to the recording layer of the recording medium, a leading shield on a leading side of the main magnetic pole, opposed to the distal end of the main magnetic pole across a gap, a high-frequency oscillator between the leading shield and the distal end of the main magnetic pole, and a recording coil configured to excite the main magnetic pole with a magnetic field.

Abstract translation: 根据一个实施例，磁记录头包括被配置为面对记录介质的记录层的面向盘的表面，主磁极包括位于面向盘的表面上的远端，并被配置为将记录磁场施加到 记录介质的记录层，主磁极的前导侧的前屏蔽，与主磁极的远端相对的间隙相对，在前屏蔽和前端之间的高频振荡器 主磁极和被配置为用磁场激励主磁极的记录线圈。

公开(公告)号：US20150228296A1

公开(公告)日：2015-08-13

申请号：US14332988

申请日：2014-07-16

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Tomoko TAGUCHI

IPC: G11B5/35 ,  G11B5/11 ,  G11B5/17

CPC classification number: G11B5/35 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/17 ,  G11B5/3146 ,  G11B2005/0024

Abstract: A magnetic recording head includes a main magnetic pole that generates a recording magnetic field in a direction perpendicular to a recording layer, a write shield with a surface that faces a trailing side of the main magnetic pole, so that a write gap is interposed between the surface and the main magnetic pole, the write shield forming a magnetic core together with the main magnetic pole, a recording coil, a high frequency oscillator within the write gap, a wiring through which a current can flow through the main magnetic pole, the high frequency oscillator, and the write shield in series, and a magnetic element made of soft magnetic material, positioned within the write gap and separated from the high frequency oscillator, and configured to form a magnetic path passing through the main magnetic pole, the magnetic element, and the write shield, and not through the high frequency oscillator.

Abstract translation: 磁记录头包括在与记录层垂直的方向上产生记录磁场的主磁极，具有面向主磁极的后侧的表面的写入屏蔽，使得写间隙介于 表面和主磁极，写屏蔽与主磁极一起形成磁芯，记录线圈，写间隙内的高频振荡器，电流可以通过主磁极流过的布线，高 频率振荡器和写入屏蔽串联，以及由软磁材料制成的磁性元件，位于写入间隙内并与高频振荡器分离，并且构造成形成通过主磁极的磁路，磁性元件 和写屏蔽，而不是通过高频振荡器。

公开(公告)号：US20140334030A1

公开(公告)日：2014-11-13

申请号：US14340979

申请日：2014-07-25

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Tomoko TAGUCHI ,  Yusuke TOMODA

IPC: G11B5/31 ,  G11B19/247 ,  G11B5/127

CPC classification number: G11B5/3116 ,  G11B5/1278 ,  G11B5/3123 ,  G11B19/247 ,  G11B2005/0024

Abstract: According to one embodiment, a recording head includes a main pole, a trailing shield including a first connecting portion and a second connecting portion, and configured to form together with the main pole a first magnetic core, a leading shield including a first connecting portion connected to the main pole through a magnetic material and an end portion opposing to the end portion of the main pole through a non-magnetic material, and configured to form together with the main pole a second magnetic core, and first and second coils wound around the first and second magnetic cores, and a connection terminal configured to flow a current through the main pole, non-magnetic conductive layer, and trailing shield.

Abstract translation: 根据一个实施例，记录头包括主极，后屏蔽，包括第一连接部分和第二连接部分，并且被配置为与主极一起形成第一磁芯，前导屏蔽包括连接到第一连接部分的第一连接部分 通过非磁性材料通过磁性材料和与主极端部相对的端部连接到主极，并且被配置为与主极一起形成第二磁芯，以及缠绕在主极上的第一和第二线圈 第一和第二磁芯，以及被配置为使电流流经主极，非磁性导电层和后屏蔽的连接端子。

公开(公告)号：US20140153128A1

公开(公告)日：2014-06-05

申请号：US13793409

申请日：2013-03-11

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Hironori TEGURI ,  Akira WATANABE ,  Tomoko TAGUCHI

IPC: G11B5/738 ,  G11B5/02 ,  G11B5/851 ,  G11B5/65 ,  G11B5/66

CPC classification number: G11B5/73 ,  G11B5/65 ,  G11B5/653 ,  G11B5/656 ,  G11B5/66 ,  G11B5/7325 ,  G11B5/851 ,  G11B2005/0021

Abstract: According to one embodiment, a magnetic recording medium includes a magnetic recording layer formed on a substrate and including magnetic grains and a grain boundary formed between the magnetic grains, the grain boundary includes a first grain boundary having a first thermal conductivity, and a second grain boundary formed on the first grain boundary and having a second thermal conductivity different from the first thermal conductivity, and at least one of the first and second grain boundaries suppresses thermal conduction.

Abstract translation: 根据一个实施例，磁记录介质包括形成在基板上的磁记录层，包括磁性颗粒和形成在磁性颗粒之间的晶界，晶界包括具有第一导热性的第一晶界和第二晶粒 边界形成在第一晶界并且具有不同于第一热导率的第二热导率，并且第一和第二晶界中的至少一个抑制热传导。