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1. 发明专利

JP2015026412A 磁気抵抗効果素子、磁気ヘッドおよび磁気記録再生装置有权
标题翻译：磁感应元件，磁头和磁记录装置
公开(公告)号：JP2015026412A
公开(公告)日：2015-02-05
申请号：JP2013156034
申请日：2013-07-26
申请人：株式会社東芝 , Toshiba Corp
发明人： SHIRATORI SATOSHI , KAMIGUCHI YUZO , TAKAGISHI MASAYUKI , SUGIMURA SHINOBU , IWASAKI HITOSHI
IPC分类号： G11B5/39 , H01L29/82
CPC分类号： G11B5/398 , G11B5/3909 , G11B5/3912 , G11B5/3929 , G11B2005/3996 , H01L43/02 , Y10T428/1121
摘要：【課題】出力電圧を増大することができるとともにシールド間のギャップを狭めることができる磁気抵抗効果素子、磁気ヘッドおよび磁気記録再生装置を提供する。【解決手段】非磁性導電層11と、前記非磁性導電層の一方の端面の近傍に接合する第1磁性層12と、前記第1磁性層から離れて設けられ前記非磁性導電層に接合する第2磁性層13aと、前記非磁性導電層に接合する第3磁性層13bと、前記第1磁性層に接続する第1磁性電極40と、前記第2磁性層に接続する第2磁性電極と、前記第3磁性層に接続し、かつ前記第3磁性層、前記非磁性導電層、および前記第1磁性層を介して前記第1磁性電極との間で電圧が印加可能であるとともに前記第3磁性層、前記非磁性導電層、および前記第2磁性層を介して前記第2磁性電極との間で電流を流すことが可能な第3磁性電極と、を備え、前記非磁性導電層は、前記一方の端面に向かって体積が減少する形状を有する。【選択図】図1
摘要翻译：要解决的问题：提供能够增加输出电压并使屏蔽间隙变窄的磁阻效应元件及其磁头及其磁记录装置。解决方案：磁阻效应元件包括非磁性导电层11; 第一磁性层12，其连接到非磁性导电层的一端附近; 第二磁性层13a，其与第一磁性层分离设置，并与非磁性导电层接合; 连接到非磁性导电层的第三磁性层13b; 与第一磁性层连接的第一磁极40; 与第二磁性层连接的第二磁极; 以及第三磁极，其与第三磁性层连接，经由第三磁性层，非磁性导电层和第一磁性层可以在第一磁极之间施加电压，并且电流可以通过该第三磁性层从第二磁性电极经由第三磁性层，非磁性导电层和第二磁性层进料。非磁性导电层的体积朝向一端减小的形状。

2. 发明专利

JP2005286223A Magnetoresistive effect element and reproduction head 有权
标题翻译：电磁效应元件和复制头
公开(公告)号：JP2005286223A
公开(公告)日：2005-10-13
申请号：JP2004100606
申请日：2004-03-30
申请人： Toshiba Corp , 株式会社東芝
发明人： KAMIGUCHI YUZO
IPC分类号： G11B5/39 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To achieve superior error rate, even at high recording density.
SOLUTION: The element has a magnetization-free layer 2 having two main surfaces opposed to each other, one of which is a medium-facing surface; an intermediate layer 4 formed on a surface at a side opposite to the medium-facing surface of the magnetization-free layer, in a manner of being contacted to the magnetization free layer; a pair of magnetization-fixing layers in a manner of being contacted to the intermediate layer and extending outwardly; and a ring-type shield 30, that covers both side faces in a medium running direction of the magnetization-free layer and the surface on the side opposite to the medium-facing surface of the magnetization-free layer; and is configured such that a sensing current flows between the magnetization-free layer and the pair of magnetization fixing layers.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：即使在高记录密度下也能实现优异的误码率。解决方案：元件具有无磁化层2，其具有彼此相对的两个主表面，其中一个是面向中间的表面; 与无磁化层接触的方式形成在与无磁化层的与中间面相反侧的表面上的中间层4; 一对磁化固定层，其以与中间层接触并向外延伸的方式; 以及环形屏蔽件30，其覆盖无磁化层的介质运行方向和与无磁化层的与介质相对表面相反的一侧的表面的两个侧面; 并且被配置为使得感测电流在无磁化层和一对磁化固定层之间流动。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JP2004128080A Magnetoresistive effect element and reproducing head 有权
公开(公告)号：JP2004128080A
公开(公告)日：2004-04-22
申请号：JP2002287701
申请日：2002-09-30
申请人： Toshiba Corp , 株式会社東芝
发明人： KAMIGUCHI YUZO , TAKAGISHI MASAYUKI , OSAWA YUICHI
IPC分类号： G11B5/39 , G01R33/09 , G11B5/00 , H01L43/00 , H01L43/08
CPC分类号： G11B5/3903 , G01R33/09 , G11B5/39 , G11B2005/0002 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To permit to obtain a sensitivity, achievable an excellent error rate in a high recording density.
SOLUTION: A reproducing head is provided with a magnetization free layer having two opposing main surfaces and one surface substantially parallel to a medium opposing surface, a non-magnetic layer formed on a surface at the opposite side to the medium of the magnetization free layer so as to be contacted with the magnetization free layer, and a pair of magnetization adhering layers formed on the opposite surface of magnetization free layer of the non-magnetic layer so as to be contacted with the non-magnetic layer and extended outwardly. The reproducing head is constituted so that a sense current is made to flow between the magnetization free layer and the pair of magnetization adhering layers.
COPYRIGHT: (C)2004,JPO

4. 发明专利

JP2003133614A MAGNETORESISTIVE EFFECT ELEMENT, MAGNETORESISTIVE EFFECT HEAD AND MAGNETIC RECORDER AND REPRODUCING DEVICE 审中-公开
公开(公告)号：JP2003133614A
公开(公告)日：2003-05-09
申请号：JP2002025994
申请日：2002-02-01
申请人： TOSHIBA CORP
发明人： YUASA HIROMI , YOSHIKAWA MASAHISA , IWASAKI HITOSHI , KAMIGUCHI YUZO , SAHASHI MASASHI
IPC分类号： G01R33/09 , G11B5/39 , H01F10/16 , H01F10/32 , H01L43/08 , H01L43/10
摘要： PROBLEM TO BE SOLVED: To increase the resistance of a part related to spin dependent conduction and, as a result, to increase the resistance change in a vertical conductive magnetoresistive effect element. SOLUTION: The magnetoresistive effect element is provided with a magnetized layer, a magnetizing layer and a nonmagnetic intermediate layer formed between the magnetized layer and the magnetizing layer and an electrode for conducting a sense current substantially vertically with respect to the film surfaces of the layers. At least one layer of the magnetized layer and the magnetizing layer is constituted of a binary alloy, a ternary alloy or an alloy having the crystal structure of body-centered cubic crystal, shown substantially by T1a T2b or Fec Cod Nie (T1 and T2 are the elements selected from a group consisting of Fe, Co and Ni while shown by 25 at.%

5. 发明专利

JP2002208120A MAGNETORESISTANCE EFFECT ELEMENT, MAGNETIC HEAD, MAGNETIC HEAD ASSEMBLY AND MAGNETIC RECORDING DEVICE 审中-公开
公开(公告)号：JP2002208120A
公开(公告)日：2002-07-26
申请号：JP2002002608
申请日：2002-01-09
申请人： TOSHIBA CORP
发明人： FUKUZAWA HIDEAKI , KAMIGUCHI YUZO , KOUI KATSUHIKO , NAKAMURA SHINICHI , YOSHIKAWA MASATOSHI , HASHIMOTO SUSUMU , SAHASHI MASASHI , IWASAKI HITOSHI , SAITO KAZUHIRO , FUKUYA HIROMI
IPC分类号： G11B5/39
摘要： PROBLEM TO BE SOLVED: To provide a magnetoresistance effect element easy in the design of a bias point and having high sensitivity and high reliability, and to provide a magnetic head, a magnetic head assembly and a magnetic recording device. SOLUTION: In a spin valve, the magnetization direction of a free layer is at a certain angle to the magnetization direction of a second ferromagnetic layer when the applied magnetic field is zero, and a pinned magnetic layer includes a pair of ferromagnetic films as anti-ferromagnetically coupled to each other and a coupling film ferromagnetically coupling them to each other. The element is provided with a means for keeping the magnetization of either one of the pair of the ferromagnetic films constituting the pinned magnetic layer and a nonmagnetic high-conductivity layer as disposed adjacent to a first ferromagnetic layer on the side opposite to the side on which the first ferromagnetic layer and a non-magnetic spacer layer are in contact with each other. Thereby, the magneto-resistance effect element having very high sensitivity while keeping the satisfactory bias point can be realized.

6. 发明专利

JP2001160640A MAGNETORESISTIVE EFFECT ELEMENT, MAGNETORESISTIVE EFFECT HEAD, MAGNETIC REPRODUCING DEVICE AND MAGNETIC LAMINATED BODY 失效
公开(公告)号：JP2001160640A
公开(公告)日：2001-06-12
申请号：JP2000286561
申请日：2000-09-21
申请人： TOSHIBA CORP
发明人： YUASA HIROMI , KAMIGUCHI YUZO
IPC分类号： G01R33/09 , G11B5/39 , H01F10/20 , H01F10/32 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive and high performance magnetoresistive effect element of a thin film which is made suitable for a magnetic reproducing system such as a magnetic reproducing head necessitating a narrow gap and a hard disk drive. SOLUTION: An intermediate layer 35 in which the magnetization of a ferromagnetic layer is connected with the direction of 90 deg. is inserted into a clearance between pin layers 33 and 37, so that heat treatment for forming the mono-magnetic domain of a free layer 41 by a anti-ferromagnetic body 43 and heat treatment for fixing the magnetization of the pin layer can be simultaneously operated. Thus, it is possible to unnecessitate any difference between the blocking temperatures of the anti- ferromagnetic body 43 brought into contact with the free layer 41 and that of the anti-ferromagnetic layer 31 brought into contact with the pin layer 33, and to select the anti-ferromagnetic layer having high interchangeable connecting magnetic field and a high blocking temperature. Also, it is possible to widen an allowable range for the distribution of the interchangeable connecting magnetic field, to realize the thin film of the anti-ferromagnetic layer, and to apply this element to a magnetic reproducing head requiring a narrow gap.

7. 发明专利

JP2000252548A MAGNETORESISTIVE EFFECT ELEMENT AND MAGNETIC RECORDER 失效
公开(公告)号：JP2000252548A
公开(公告)日：2000-09-14
申请号：JP37403399
申请日：1999-12-28
申请人： TOSHIBA CORP
发明人： KAMIGUCHI YUZO , YUASA HIROMI , SAHASHI MASASHI , IWASAKI HITOSHI
IPC分类号： G11B5/39 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To secure magnetic coupling of ferromagnetic metallic layers and to obtain an excellent magnetized stuck surface, causing mirror reflection of electrons to occur, by providing a nonmetallic layer as an electron reflecting layer in the middle of the magnetized stuck layer, and laminating two kinds of layers as a backing for the nonmetallic layer. SOLUTION: By forming a nonmetallic layer 50 on a second magnetic layer 40 first of all, mirror reflection of electrons is caused to occur between these layers. As the result of this, it becomes possible to reduce the loss of momentum of the electrons. In addition, it becomes possible to cause mirror reflection of electrons to occur even at the interface between a second ferromagnetic metallic layer 26 and a nonmetallic layer 24, by forming the nonmetallic layer 24 in the middle of a first magnetized layer 20. Accordingly, it is possible to cause electron reflection to occur even at an interface of a magnetic layer above or below a current path, in spite of using a metallic antiferromagnetic substance. Consequently, it becomes possible to minimize the loss of momentum of electrons, and to obtain an excellent bias magnetic field property, using the antiferromagnetic substance.

8. 发明专利

JPH10321930A MAGNETO-RESISTIVE EFFECT ELEMENT, MAGNETIC HEAD USING THE SAME, AND MAGNETIC RECORDER 失效
公开(公告)号：JPH10321930A
公开(公告)日：1998-12-04
申请号：JP6016498
申请日：1998-03-11
申请人： TOSHIBA CORP
发明人： KAMIGUCHI YUZO , SAITO AKIKO , FUKUZAWA HIDEAKI , IWASAKI HITOSHI , SAHASHI MASASHI
IPC分类号： G11B5/39 , G01R33/09 , G11C11/15 , H01F10/32 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To ensure a large MR change rate of a spin valve film, satisfy low magnetostriction constant, and impart superior soft magnet characteristic. SOLUTION: This magnetoresistive effect element is provided with a first magnetic layer 1, a second magnetic layer 2, a spin valve film 6 having a nonmagnetic layer 3 interposed between the layers 1 and 2, and a pair of electrodes 16 which supply a sensor current to the spin valve film 6. In at least one magnetic layer out of the first and the second magnetic layer 1, 2, the denset surface of crystal grains constituting the layer is dispersed isotropically. The magnetic layer such as this can be obtained with high reproducibility, by making the thickness of a substratum layer having the same crystal structure as the magnetic layer less than, e.g. 2.0 nm and making the denset layer of crystal grains constituting the substratum layer isotropically disperse.

9. 发明专利

JPH10150232A MAGNETORESISTANCE EFFECT DEVICE 失效
公开(公告)号：JPH10150232A
公开(公告)日：1998-06-02
申请号：JP25216897
申请日：1997-09-17
申请人： TOSHIBA CORP
发明人： KAMIGUCHI YUZO , SAHASHI MASASHI
IPC分类号： G01R33/09 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To provide a magnetoresistance effect device which is high in output power and possessed of an amplifying function. SOLUTION: A magnetoresistance effect device is equipped with an N-type emitter layer 3, a P-type base layer 2, and an N-type collector 4 which are formed so as to constitute a PN junction respectively, an emitter ferromagnetic layer 5 formed coming into contact with the N-type emitter layer 3, a base ferromagnetic layer 1 formed coming into contact with the P-type base layer 2, a power supply 6 which applies a forward bias voltage between the N-type emitter layer 3 and the P-type base layer 2 through the intermediary of the emitter ferromagnetic layer 5, a power supply 7 which applies a reverse bias voltage between the N-type collector 4 and the P-type base layer 2, and a power supply 8 which supplies a bias voltage so as to inject minority carriers into the P-type base layer 2 through the base ferromagnetic layer 1.

10. 发明专利

JPH1092026A MAGNETIC RECORDER AND MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPH1092026A
公开(公告)日：1998-04-10
申请号：JP24230096
申请日：1996-09-12
申请人： TOSHIBA CORP
发明人： KAMIGUCHI YUZO , SAHASHI MASASHI
IPC分类号： G11B5/66 , G11B5/00 , G11B5/02 , G11B5/39 , G11B5/65 , G11B9/00 , G11B11/00 , G11B11/10
摘要： PROBLEM TO BE SOLVED: To deal with a future improvement in magnetic recording density. SOLUTION: The magnetic recording medium 10 having magnetic recording layers 12 consisting of magnetic films exhibiting a magneto-resistance effect; for example, multilayered magnetic films (spin bulb films, etc.) including a laminated structure of a magnetic layer/nonmagnetic layer/magnetic layer and granular structure films is used. The electric resistance of the magnetic films 12 exhibiting the magneto-resistance effect of such magnetic recording medium 10 is directly measured by a magnetic head 20 having a three-layered structure consisting of, for example, a first metallic terminal 21/insulating layer 22/second metallic terminal 23, by which the signals written on the magnetic recording layers 12 are reproduced.

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