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11.发明申请公开(公告)号：US20140334041A1
公开(公告)日：2014-11-13
申请号：US14206175
申请日：2014-03-12
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Naoki HASE , Masayuki TAKAGISHI , Susumu HASHIMOTO , Shuichi MURAKAMI , Yousuke ISOWAKI , Masaki KADO , Hitoshi IWASAKI
IPC: G11B5/31
CPC classification number: G01R33/00 , G01R33/093 , G11B5/3912 , G11B5/3967 , G11B2005/0024 , Y10T428/1121
Abstract: A magnetoresistive element according to an embodiment includes: a magnetoresistance effect film including: a first magnetic film; a second magnetic film; and an intermediate film of a nonmagnetic material disposed between the first magnetic film and the second magnetic film, at least one of the first magnetic film and the second magnetic film being formed of a material expressed as AxB1-x(65 at %≦x≦85 at %) where A is an alloy containing Co and at least one element selected from Fe and Mn, and B is an alloy containing Si or Ge, a Si concentration in the at least one of the first magnetic film and the second magnetic film decreasing and a Ge concentration increasing as a distance from the intermediate film increases.
Abstract translation: 根据实施例的磁阻元件包括：磁阻效应膜，包括：第一磁膜; 第二磁性膜; 以及设置在所述第一磁性膜和所述第二磁性膜之间的非磁性材料的中间膜，所述第一磁性膜和所述第二磁性膜中的至少一个由表示为AxB1-x（65at％＆nlE; x＆amp; ; 85原子％）其中A是含有Co和至少一种选自Fe和Mn的元素的合金，B是含有Si或Ge的合金，第一磁性膜和第二磁性体中的至少一种中的Si浓度 随着距离中间膜的距离增加，Ge浓度增加。
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12.发明申请公开(公告)号：US20140049857A1
公开(公告)日：2014-02-20
申请号：US13939799
申请日：2013-07-11
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Yousuke ISOWAKI , Hitoshi Iwasaki , Masayuki Takagishi
IPC: G11B5/11
CPC classification number: G11B5/11 , G11B5/112 , G11B5/3163 , G11B5/3912 , G11B5/3916 , G11B5/3932 , G11B5/398 , Y10T428/1121
Abstract: According to one embodiment, a magneto-resistance effect element includes: a first shield; a second shield; a first side shield layer; a second side shield layer; a stacked body; a first shield guide layer; and a second shield guide layer. The first shield guide layer includes a fifth magnetic layer provided between the first side shield layer and the stacked body. The second shield guide layer includes a sixth magnetic layer provided between the second side shield layer and the stacked body. A distance between the first side shield layer and the first shield guide layer is shorter than a distance between the stacked body and the first shield guide layer. A distance between the second side shield layer and the second shield guide layer is shorter than a distance between the stacked body and the second shield guide layer.
Abstract translation: 根据一个实施例，磁阻效应元件包括：第一屏蔽; 第二个盾牌 第一侧屏蔽层; 第二侧屏蔽层; 堆叠的身体 第一屏蔽引导层; 和第二屏蔽引导层。 第一屏蔽引导层包括设置在第一侧屏蔽层和层叠体之间的第五磁性层。 第二屏蔽引导层包括设置在第二侧屏蔽层和层叠体之间的第六磁性层。 第一侧屏蔽层和第一屏蔽引导层之间的距离比层叠体与第一屏蔽引导层之间的距离短。 第二侧屏蔽层和第二屏蔽引导层之间的距离比层叠体与第二屏蔽引导层之间的距离短。
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13.发明公开公开(公告)号：US20240170011A1
公开(公告)日：2024-05-23
申请号：US18364747
申请日：2023-08-03
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Kazuaki OKAMOTO , Yousuke ISOWAKI
CPC classification number: G11B5/09 , G11B5/4886 , G11B5/59627
Abstract: According to one embodiment, a data processor includes an interface section and a processor. The interface section is configured to acquire partial data relating to a control condition of a magnetic recording/reproducing device. The processor is configured to process the partial data. The processor is configured to derive a first data by processing the partial data with a first model based on characteristics of the partial data, a first resolution of the first data being higher than a partial resolution of the partial data. The processor is configured to derive a second data by processing the partial data with a second model based on the characteristic. The second model is different from the first model. A second resolution of the second data being higher than the partial resolution.
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公开(公告)号：US20230068268A1
公开(公告)日：2023-03-02
申请号：US17649567
申请日：2022-02-01
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Yousuke ISOWAKI , Katsuya SUGAWARA
Abstract: According to one embodiment, a magnetic reproducing and processing device includes an acquirer and a processor. The acquirer is configured to acquire a first electric signal obtained by reproducing information recorded in a first recording area of a magnetic recording medium by a first reproducing element and a second electric signal obtained by reproducing the information recorded in the first recording area by a second reproducing element. A first sensitivity of the first reproducing element to a magnetic signal recorded on the magnetic recording medium is different from a second sensitivity of the second reproducing element to the magnetic signal. The processor is configured to output a reproduced signal corresponding to the information recorded in the first recording area based on the first electric signal and the second electric signal acquired by the acquirer.
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Patent Agency Ranking
公开(公告)号：US20190035449A1
公开(公告)日：2019-01-31
申请号：US15911211
申请日：2018-03-05
Applicant: Kabushiki Kaisha Toshiba
Inventor： Daisuke SAIDA , Yousuke ISOWAKI , Michael Arnaud QUINSAT , Kenichiro YAMADA , Kosuke TATSUMURA
CPC classification number: G11C11/1675 , G06N3/0445 , G06N3/0454 , G06N3/0472 , G06N3/0635 , G06N3/084 , G06N7/005 , G11C11/161 , G11C11/1673
Abstract: A memory system has a nonvolatile memory having a plurality of readable and writable memory cells, a write voltage control unit that controls at least one of a voltage value and a pulse width of a write voltage of the nonvolatile memory in accordance with a weight of a signal processing path or a signal processing node, a write unit that writes data in two or more memory cell groups among the plurality of memory cells using the write voltage controlled by the write voltage control unit, a reversal probability detection unit that detects a reversal probability of the memory cell group when writing data is written by the write unit, and a weight conversion unit that converts the detected reversal probability into a weight.
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公开(公告)号：US20190013042A1
公开(公告)日：2019-01-10
申请号：US15922387
申请日：2018-03-15
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Masayuki TAKAGISHI , Tomoyuki MAEDA , Yousuke ISOWAKI , Naoyuki NARITA , Katsuya SUGAWARA
Abstract: According to one embodiment, a magnetic recording and reproducing device includes an output driver, a magnetic head, and a magnetic recording medium. The output driver outputs a recording signal corresponding to input information. The magnetic head includes a coil. A recording current includes the recording signal flows in the coil. Information corresponding to the input information is recorded in the magnetic recording medium. The input information includes first, second, and third information combinations. The first information combination includes first to fourth information. The second information combination includes fifth to eighth information. The third information combination includes ninth to twelfth information. The recording signal changes to an eleventh recording current to correspond to the eleventh information. The recording signal changes to a third recording current to correspond to the third information. An absolute value of the eleventh recording current is greater than an absolute value of the third recording current.
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17.发明申请公开(公告)号：US20150269956A1
公开(公告)日：2015-09-24
申请号：US14642980
申请日：2015-03-10
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Yousuke ISOWAKI , Kenichiro YAMADA , Masayuki TAKAGISHI , Hitoshi IWASAKI
IPC: G11B5/39
CPC classification number: G11B5/3954
Abstract: A magnetic head of an embodiment includes: a first electrode being a magnetic body having a magnetic shielding property; a first signal detector disposed on the first electrode and being a differential magnetoresistive effect element; a second electrode disposed on the first signal detector; an insulating layer disposed on the second electrode; a third electrode disposed on the insulating layer; a second signal detector disposed on the third electrode and being a differential magnetoresistive effect element; and a fourth electrode disposed on the second signal detector and being a magnetic body having a magnetic shielding property. At least one of the second electrode and the third electrode is a nonmagnetic metal.
Abstract translation: 实施方式的磁头包括：具有磁屏蔽性的磁体的第一电极; 第一信号检测器，设置在第一电极上并且是差分磁阻效应元件; 设置在所述第一信号检测器上的第二电极; 设置在所述第二电极上的绝缘层; 设置在所述绝缘层上的第三电极; 第二信号检测器，设置在第三电极上，并且是差分磁阻效应元件; 以及第四电极，设置在第二信号检测器上，并且是具有磁屏蔽性质的磁体。 第二电极和第三电极中的至少一个是非磁性金属。
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公开(公告)号：US20150243308A1
公开(公告)日：2015-08-27
申请号：US14627003
申请日：2015-02-20
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Masayuki TAKAGISHI , Hitoshi IWASAKI , Kenichiro YAMADA , Yousuke ISOWAKI , Kohsuke HARADA
IPC: G11B5/39
CPC classification number: G11B5/3912 , G11B5/11 , G11B5/3909 , G11B2005/3996
Abstract: According to one embodiment, a magnetic recording and reproducing device includes magnetic recording medium and a magnetic head. The magnetic recording medium includes a first surface. A plurality of bits is provided in the first surface. Each of the bits has a direction of magnetization corresponding to recorded information. The magnetic head includes a reproducing unit. The reproducing unit senses the direction of magnetization. The reproducing unit includes a first shield, a second shield, a first magnetic layer, a second magnetic layer, a third magnetic layer, a fourth magnetic layer, an intermediate layer, a first nonmagnetic layer, and a second nonmagnetic layer. The first and the second nonmagnetic layers include at least one selected from ruthenium, copper, and tantalum. A distance between the first shield and the second shield is not less than 3 times and not more than 7 times a length of each of the bits.
Abstract translation: 根据一个实施例，磁记录和再现装置包括磁记录介质和磁头。 磁记录介质包括第一表面。 在第一表面中提供多个位。 每个位具有对应于记录信息的磁化方向。 磁头包括再现单元。 再现单元感测磁化方向。 再现单元包括第一屏蔽，第二屏蔽，第一磁性层，第二磁性层，第三磁性层，第四磁性层，中间层，第一非磁性层和第二非磁性层。 第一和第二非磁性层包括选自钌，铜和钽中的至少一种。 第一屏蔽和第二屏蔽之间的距离不小于每个位的长度的3倍且不超过7倍。
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19.发明申请公开(公告)号：US20140334029A1
公开(公告)日：2014-11-13
申请号：US14193172
申请日：2014-02-28
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Naoki HASE , Masayuki TAKAGISHI , Susumu HASHIMOTO , Shuichi MURAKAMI , Yousuke ISOWAKI , Masaki KADO , Hitoshi IWASAKI
IPC: G11B5/31
CPC classification number: G01R33/093 , G11B5/3906 , G11B5/3912 , G11B5/398 , H01F10/1936 , H01F10/3268 , H01F10/3295 , H01L43/02 , H01L43/08 , Y10T428/1121
Abstract: A magnetoresistive element according to an embodiment includes: a magnetoresistance effect film including: a first and second magnetic films; and an intermediate film disposed between the first and second magnetic films, at least one of the first and second magnetic films being formed of a Heusler alloy expressed as Co100-x(AyB1.0-y)x (40 at %≦x≦60 at %, 0.3≦y≦0.7) where A is an alloy containing at least Fe and Mn, and B is an alloy containing at least Si, Al, and Ge, a composition of the at least one of the first and second magnetic films being changed in a film-thickness direction so that a ratio of Fe/(Fe+Mn) is less than 60% in a first region disposed near an interface with the intermediate film in the film-thickness direction, and is 60% or more in a second region that is disposed at more distance from the interface than the first region in the film-thickness direction.
Abstract translation: 根据实施例的磁阻元件包括：磁阻效应膜，包括：第一和第二磁性膜; 以及设置在所述第一和第二磁性膜之间的中间膜，所述第一和第二磁性膜中的至少一个由表示为Co100-x（AyB1.0-y）x（40at％＆nlE; x＆amp; 60at％，0.3＆nlE; y＆nlE; 0.7）其中A是至少含有Fe和Mn的合金，B是至少含有Si，Al和Ge的合金，第一和第二 磁性膜在膜厚度方向上变化，使得在设置在与中间膜在膜厚度方向上的界面附近的第一区域中Fe /（Fe + Mn）的比率小于60％，并且为60％ 或更多的第二区域，其设置在比膜厚度方向上比第一区域更接近界面的位置。
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