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1. 发明专利

JP2013200915A Three-dimensional magnetic recording medium 有权
标题翻译：三维磁记录介质
公开(公告)号：JP2013200915A
公开(公告)日：2013-10-03
申请号：JP2012068409
申请日：2012-03-23
申请人： Toshiba Corp , 株式会社東芝
发明人： YO TO , SHUTO HIROFUMI , NAGASAWA TSURUMI , KUDO KIWAMU , SATO TOSHIE , MIZUSHIMA KOICHI
IPC分类号： G11B5/65 , G11B5/02 , G11B5/31 , G11B5/66 , G11B5/738
摘要： PROBLEM TO BE SOLVED: To improve recording efficiency.SOLUTION: A three-dimensional magnetic recording medium includes a plurality of recording layers and a plurality of intermediate layers. The plurality of recording layers are formed of a magnetic material. The plurality of intermediate layers are formed of a nonmagnetic material. The recording layers are laminated so that the effective magnetic anisotropic degree of the recording layer becomes higher sequentially from a recording layer at a distant position from a magnetic head used for data recording and readout of the data toward a recording layer at a close position from the magnetic head, and a recording density of the recording layer is set to high when the effectively magnetic anisotropic degree is high. The recording layers and the intermediate layers are laminated alternately.
摘要翻译：要解决的问题：提高记录效率。解决方案：三维磁记录介质包括多个记录层和多个中间层。多个记录层由磁性材料形成。多个中间层由非磁性材料形成。记录层被层叠，使得记录层的有效磁性各向异性程度从远离位置的记录层从数据记录用的磁头和从数据记录的关闭位置向数据读出的记录层依次变高当有效磁各向异性度高时，记录层的记录密度设定为高。记录层和中间层交替层叠。

2. 发明专利

JP2013097828A Magnetic head, magnetic sensor, and magnetic recording and playback device 有权
标题翻译：磁头，磁传感器，磁记录和回放装置
公开(公告)号：JP2013097828A
公开(公告)日：2013-05-20
申请号：JP2011237383
申请日：2011-10-28
申请人： Toshiba Corp , 株式会社東芝
发明人： NAGASAWA TSURUMI , SUTO HIROFUMI , KUDO KIWAMU , SATO TOSHIE , MIZUSHIMA KOICHI , YO TO
IPC分类号： G11B5/39 , G11B5/02 , H01L29/82 , H01L43/08
CPC分类号： G01R33/093 , B82Y10/00 , G11B5/3909 , G11B5/3932 , G11B2005/3996 , Y10T428/11 , Y10T428/1171 , Y10T428/1193
摘要： PROBLEM TO BE SOLVED: To provide a magnetic head provided with an STO having a high output, a high Q value a thin film thickness, a magnetic sensor, and a magnetic recording and playback device.SOLUTION: The magnetic head of one embodiment includes a spin torque oscillation device. The spin torque oscillation device includes a first ferromagnetic layer, a second ferromagnetic layer, a third ferromagnetic layer provided oppositely from the first ferromagnetic layer with respect to the second ferromagnetic layer, a first non-magnetic layer provided between the first ferromagnetic layer and the second ferromagnetic layer, a second non-magnetic layer provided between the second ferromagnetic layer and the third ferromagnetic layer, a first electrode provided on a surface oppositely from the first non-magnetic layer with respect to the first ferromagnetic layer, and a second electrode provided on a surface oppositely from the second non-magnetic layer with respect to the third ferromagnetic layer. The second ferromagnetic layer and the third ferromagnetic layer are subjected to antiferromagnetic coupling through the second non-magnetic layer, magnetization directions of the first ferromagnetic layer and the second ferromagnetic layer are arranged in antiparallel in the case that current is not made to flow between the first and second electrodes, and magnetization precession is respectively induced in the first to third ferromagnetic layers when current is made to flow between the first and second electrodes.
摘要翻译：要解决的问题：提供具有高输出，高Q值，薄膜厚度的STO，磁传感器和磁记录和重放装置的磁头。解决方案：一个实施例的磁头包括自旋扭矩振荡装置。自旋扭矩振荡装置包括第一铁磁层，第二铁磁层，与第一铁磁层相对于第二铁磁层相对设置的第三铁磁层，设置在第一铁磁层和第二铁磁层之间的第一非磁性层铁磁层，设置在第二铁磁层和第三铁磁层之间的第二非磁性层，设置在相对于第一铁磁层与第一非磁性层相反的表面上的第一电极和设置在第一铁磁层上的第二电极与第二非磁性层相对于第三铁磁层相反的表面。第二铁磁层和第三铁磁层经由第二非磁性层进行反铁磁耦合，第一铁磁层和第二铁磁层的磁化方向被布置成反并联，在电流不在第当电流在第一和第二电极之间流动时，分别在第一至第三铁磁层中诱发第一和第二电极以及磁化进动。版权所有（C）2013，JPO＆INPIT

3. 发明专利

JP2015008026A 磁気記録再生装置审中-公开
标题翻译：磁记录和再现设备
公开(公告)号：JP2015008026A
公开(公告)日：2015-01-15
申请号：JP2013132877
申请日：2013-06-25
申请人：株式会社東芝 , Toshiba Corp
发明人： KUDO KIWAMU , NAGASAWA TSURUMI , SHUTO HIROFUMI , YO TO , MIZUSHIMA KOICHI , SATO TOSHIE
IPC分类号： G11B5/39 , G11B5/02
CPC分类号： G11B5/35 , G11B5/02 , G11B5/10 , G11B2005/0005
摘要：【課題】再生信号のSN比を向上させることができる磁気記録再生装置を提供する。【解決手段】一実施形態に係る磁気記録再生装置は、記録媒体及びスピントルク発振素子再生ヘッドを備える。記録媒体では、複数の同心円状トラックが形成されている。スピントルク発振素子再生ヘッドは、前記記録媒体から情報を再生するものであって、第1のクロストラック方向幅を有する発振層と、第2のクロストラック方向幅を有するポーラライザ層と、前記発振層及び前記ポーラライザ層間に配置されたスペーサ層と、を含むスピントルク発振素子を備える。前記第1のクロストラック方向幅は前記第2のクロストラック方向幅の2倍より大きく、前記第2のクロストラック方向幅は隣接トラック間距離より小さい。【選択図】図2
摘要翻译：要解决的问题：提供能够改善再现信号的SN比的磁记录和再现装置。解决方案：根据一个实施例的磁记录和再现装置包括：记录介质; 和自旋扭矩振荡元件再现头。在记录介质上形成多个同心轨迹。自旋转矩振荡元件再现头再现来自记录介质的信息，并且包括一个自旋扭矩振荡元件，其包括具有第一交叉轨道方向宽度的振荡层; 具有第二交叉轨道方向宽度的偏振层; 以及布置在振荡层和偏振层之间的间隔层。第一交叉轨道方向宽度大于第二交叉轨道方向宽度的两倍，并且第二交叉轨道方向宽度小于两个相邻轨道之间的距离。

4. 发明专利

JP2013069361A Magnetic medium and magnetic recording/reproducing method 有权
标题翻译：磁介质和磁记录/再现方法
公开(公告)号：JP2013069361A
公开(公告)日：2013-04-18
申请号：JP2011205777
申请日：2011-09-21
申请人： Toshiba Corp , 株式会社東芝
发明人： YO TO , SHUTO HIROFUMI , NAGASAWA TSURUMI , KUDO KIWAMU , SATO TOSHIE , MIZUSHIMA KOICHI
IPC分类号： G11B5/66 , G11B5/31 , G11B5/39 , G11B5/673 , G11B5/716 , G11B5/738 , H01F10/26 , H01F10/32
CPC分类号： G11B5/746 , G11B5/66 , G11B5/82 , G11B2005/0024
摘要： PROBLEM TO BE SOLVED: To make it possible to stably record and reproduce information.SOLUTION: A magnetic medium related to one embodiment includes: a first magnetic layer; a second magnetic layer; and a non-magnetic layer. The first magnetic layer is formed of a first magnetic material and records information in response to a direction of magnetization. The second magnetic layer is formed of a second magnetic material of which magnetic anisotropy is different from that of the first magnetic material. The non-magnetic layer is laminated between the first magnetic layer and the second magnetic layer and is formed of a non-magnetic material. The magnetization of the first magnetic layer and the magnetization of the second magnetic layer are antiparallel-coupled to each other by means of exchange action of magnetism via the non-magnetic layer, and the antiparallel-coupling thereof indicates that each magnetization is oriented to opposite directions and is coupled to each other.
摘要翻译：要解决的问题：使得可以稳定地记录和再现信息。解决方案：与一个实施例相关的磁介质包括：第一磁性层; 第二磁性层; 和非磁性层。第一磁性层由第一磁性材料形成，并响应于磁化方向记录信息。第二磁性层由磁性各向异性与第一磁性材料不同的第二磁性材料形成。非磁性层层压在第一磁性层和第二磁性层之间，并由非磁性材料形成。第一磁性层的磁化和第二磁性层的磁化通过非磁性层的磁性交换作用彼此反平行耦合，并且其反向平行耦合表示每个磁化取向相反方向并且彼此耦合。版权所有（C）2013，JPO＆INPIT

5. 发明专利

JP2008064499A Magnetic sensor 有权
标题翻译：磁传感器
公开(公告)号：JP2008064499A
公开(公告)日：2008-03-21
申请号：JP2006240377
申请日：2006-09-05
申请人： Toshiba Corp , 株式会社東芝
发明人： SATO TOSHIE , KUDO KIWAMU , MIZUSHIMA KOICHI
IPC分类号： G01R33/09 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To provide a magnetic sensor capable of reducing magnetic white noise and implementing high-density magnetic recording.
SOLUTION: The magnetic sensor includes: a magnetoresistance effect element including a magnetized fixed layer, a nonmagnetic intermediate layer, and a magnetization-free layer; a microwave oscillating element for inducing magnetic resonance in the magnetization-free layer of the magnetoresistance effect element; and a microwave detector for detecting microwave output of the magnetoresistance effect element.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供能够降低磁白噪声并实现高密度磁记录的磁传感器。解决方案：磁传感器包括：磁阻效应元件，包括磁化固定层，非磁性中间层和无磁化层; 用于在磁阻效应元件的无磁化层中感应磁共振的微波振荡元件; 以及用于检测磁阻效应元件的微波输出的微波检测器。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2014170604A Magnetic recording medium and magnetic recording device 有权
标题翻译：磁记录介质和磁记录装置
公开(公告)号：JP2014170604A
公开(公告)日：2014-09-18
申请号：JP2013042164
申请日：2013-03-04
申请人： Toshiba Corp , 株式会社東芝
发明人： YO TO , SHUTO HIROFUMI , KUDO KIWAMU , NAGASAWA TSURUMI , SATO TOSHIE , MIZUSHIMA KOICHI
IPC分类号： G11B5/66 , G11B5/02 , G11B5/65
CPC分类号： G11B5/66
摘要： PROBLEM TO BE SOLVED: To reproduce information at a lower magnetic resonance frequency while securing thermal stability.SOLUTION: A magnetic recording medium of an embodiment includes a plurality of recording layers and a first non-magnetic layer. The recording layer includes at least a first magnetic layer which is formed of a first magnetic material, and in which information is recorded according to directions of magnetization, and at least a second magnetic layer which has smaller effective perpendicular magnetic anisotropy than the first magnetic material. The first non-magnetic layer is formed of a non-magnetic material, and laminated between the plurality of recording layers. First magnetization being the magnetization of the first magnetic layer and second magnetization being the magnetization of the second magnetic layer are magnetically coupled.
摘要翻译：要解决的问题：在确保热稳定性的同时以更低的磁共振频率再现信息。解决方案：实施例的磁记录介质包括多个记录层和第一非磁性层。记录层至少包括第一磁性层，其由第一磁性材料形成，并且其中根据磁化方向记录信息，并且至少第二磁性层具有比第一磁性材料更小的有效垂直磁各向异性。第一非磁性层由非磁性材料形成，层压在多个记录层之间。第一磁化是第一磁性层的磁化，第二磁化是第二磁性层的磁化磁耦合。

7. 发明专利

JP2010087225A Magnetic oscillator, magnetic sensor and magnetic recording/reproducing system 有权
标题翻译：磁力振荡器，磁传感器和磁记录/再现系统
公开(公告)号：JP2010087225A
公开(公告)日：2010-04-15
申请号：JP2008254351
申请日：2008-09-30
申请人： Toshiba Corp , 株式会社東芝
发明人： NAGASAWA TSURUMI , KUDO KIWAMU , MIZUSHIMA KOICHI , SATO TOSHIE
IPC分类号： H01L43/08 , G11B5/39 , H01L29/82
CPC分类号： G01R33/098 , B82Y25/00 , G01R33/093 , G01R33/1284 , G11B5/3903 , G11B2005/0002 , H01F10/3254 , H01F10/3277 , H01F10/329 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To provide a magnetic oscillator having a narrow oscillation line width and a stable oscillation frequency. SOLUTION: The magnetic oscillator is formed into a stacked structure in which a first ferromagnetic layer 11, having magnetization M1, a non-magnetic layer 12, and a second ferromagnetic layer 13 having magnetization M2 are successively laminated. The second ferromagnetic layer 13 is formed of an in-plane magnetization film having uniaxial magnetic anisotropy. The magnetization M2, in which a precession is induced by conducting an electric current I is controlled, by applying a magnetic field from the outside so that the direction of the magnetization M2 becomes the direction in which the effect of a demagnetizing field which acts on the ferromagnetic layer and the effect of the uniaxial anisotropy cancel each other. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供具有窄的振荡线宽度和稳定的振荡频率的磁振荡器。解决方案：磁性振荡器形成层叠结构，其中具有磁化M1的第一铁磁层11，非磁性层12和具有磁化M2的第二铁磁层13依次层叠。第二铁磁层13由具有单轴磁各向异性的平面内磁化膜形成。通过施加来自外部的磁场来控制通过传导电流I而引起进动的磁化M2，使得磁化M2的方向成为作用于磁场的退磁场的作用的方向铁磁层和单轴各向异性的影响相互抵消。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2010055725A Magnetic recording and reproducing apparatus 审中-公开
标题翻译：磁记录和再现设备
公开(公告)号：JP2010055725A
公开(公告)日：2010-03-11
申请号：JP2008222294
申请日：2008-08-29
申请人： Toshiba Corp , 株式会社東芝
发明人： KUDO KIWAMU , MIZUSHIMA KOICHI , NAGASAWA TSURUMI , SATO TOSHIE
IPC分类号： G11B5/35
CPC分类号： G11B5/3903 , B82Y25/00 , G01R33/093
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording and reproducing apparatus which reproduces high S/N signals.
SOLUTION: The magnetic recording and reproducing apparatus includes a magnetic information reproducing head 1 including a magnetic oscillator 2, and a magnetic recording disk 3. The magnetic oscillator 2 detects a magnetic field from the magnetic recording disk to reproduce the signal. By defining a criteria to determine the revolution of the magnetic recording disk 3, the frequency shifts of the magnetic oscillator 2 by the magnetic field 5 from the magnetic recording disk 3, and the full width at half maximum of the oscillation frequency and spectrum, i.e. the characteristics of the magnetic oscillator 2 so that the reproduced signal from the magnetic oscillator 2 satisfy the desired S/N ratio, the magnetic recording and reproducing apparatus is configured based on the criteria.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供再现高S / N信号的磁记录和再现装置。解决方案：磁记录和再现装置包括包括磁性振荡器2和磁记录盘3的磁信息再现头1.磁性振荡器2检测来自磁记录盘的磁场以再现该信号。通过定义用于确定磁记录盘3的旋转的标准，通过磁场5从磁记录盘3的磁振荡器2的频移和振荡频率和频谱的半峰全宽，即磁性振荡器2的特性使得来自磁性振荡器2的再现信号满足期望的S / N比，磁记录和再现装置是基于该标准来配置的。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JP2006286855A Magnetic oscillation device, magnetic sensor, magnetic head and magnetic reproducer 有权
标题翻译：磁振动装置，磁传感器，磁头和磁性再生器
公开(公告)号：JP2006286855A
公开(公告)日：2006-10-19
申请号：JP2005103607
申请日：2005-03-31
申请人： Toshiba Corp , 株式会社東芝
发明人： KUDO KIWAMU , SATO TOSHIE
IPC分类号： H01L43/00 , G01R33/20 , G11B5/33 , H01L43/08
CPC分类号： G01R33/09 , B82Y25/00 , G11B5/3903 , G11B2005/0002 , H01F10/3268 , H01F10/3286 , H01L43/08 , Y10T428/24942
摘要： PROBLEM TO BE SOLVED: To provide a magnetic oscillation device having an excellent energy efficiency and obtaining a high magnetic oscillation-output. SOLUTION: The magnetic oscillation device has a first magnetic resonance layer having a first magnetic resonance frequency f 1 , a second magnetic resonance layer having a second magnetic resonance frequency f 2 larger than the first magnetic resonance frequency f 1 , and a non-magnetic layer held between the first magnetic resonance layer and the second magnetic resonance layer. The magnetic oscillation device further has a pair of electrodes vertically conducting a current to the film surfaces of the first and second magnetic resonance layers and the non-magnetic layer. In the magnetic oscillation device, the difference (f 2 -f 1 ) of the two magnetic resonance frequencies is larger than the half of the width of the resonance line of the first magnetic resonance layer, and the ratio f 2 /f 1 of the two magnetic resonance frequencies reaches 1.6 or less. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供具有优异能量效率并获得高磁振荡输出的磁振荡装置。解决方案：磁性振荡器件具有第一磁共振频率f 1 的第一磁共振层，具有第二磁共振频率f 2 大于第一磁共振频率f 1 ，以及保持在第一磁共振层和第二磁共振层之间的非磁性层。磁振荡装置还具有一对向第一和第二磁共振层和非磁性层的膜表面引导电流的电极。在磁振动装置中，两个磁共振频率的差（f 2 -f 1 ）大于第一磁共振频率的谐振线的宽度的一半磁共振层，两个磁共振频率的比率f 2 / f 1 达到1.6以下。版权所有（C）2007，JPO＆INPIT

10. 发明专利

JP2006286093A Magnetic sensor and magnetic recording/reproducing device 有权
标题翻译：磁传感器和磁记录/再现装置
公开(公告)号：JP2006286093A
公开(公告)日：2006-10-19
申请号：JP2005104470
申请日：2005-03-31
申请人： Toshiba Corp , 株式会社東芝
发明人： SATO TOSHIE , KUDO KIWAMU
IPC分类号： G11B5/39 , G01R33/20 , H01L29/82 , H01L43/00
CPC分类号： G01R33/093 , B82Y10/00 , B82Y25/00 , G11B5/3929 , G11B2005/0016 , G11B2005/3996
摘要： PROBLEM TO BE SOLVED: To provide a highly sensitive magnetic sensor using a magnetic oscillation element.
SOLUTION: The magnetic sensor is provided with a first magnetic resonance layer, a second magnetic resonance layer, a nonmagnetic layer held between the first and second magnetic resonance layers, a magnetic oscillation element having a pair of electrodes for vertically conducting currents to the film surfaces of the first and second magnetic resonance layers and the nonmagnetic layer, and a monitoring means for monitoring a change in amplitude and a phase of high-frequency oscillation voltage generated in both ends of the magnetic oscillation element caused by the precession of magnetization of at least one of the first and second magnetic resonance layers generated by the conduction of the currents or the external magnetic field of an oscillation frequency.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种使用磁振动元件的高灵敏度磁传感器。解决方案：磁传感器设置有第一磁共振层，第二磁共振层，保持在第一和第二磁共振层之间的非磁性层，具有一对电极的磁性振荡元件，用于垂直传导电流第一和第二磁共振层和非磁性层的膜表面，以及监测装置，用于监测由磁化进动引起的磁振荡元件两端产生的高频振荡电压的振幅变化和相位通过电流的导通或振荡频率的外部磁场产生的第一和第二磁共振层中的至少一个。版权所有（C）2007，JPO＆INPIT

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