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1. 发明申请

US20050064157A1 Magnetic memory and method of operation thereof 审中-公开
标题翻译：磁存储器及其操作方法
公开(公告)号：US20050064157A1
公开(公告)日：2005-03-24
申请号：US10979428
申请日：2004-11-02
申请人： Takeshi Okazawa , Katsumi Suemitsu
发明人： Takeshi Okazawa , Katsumi Suemitsu
IPC分类号： G11C11/14 , G11C11/15 , G11C11/56 , H01F10/32 , H01L21/8246 , H01L27/105 , H01L43/08 , B32B7/06
CPC分类号： G11C11/5607 , G11C11/15 , G11C11/161 , Y10T428/2486
摘要： A magnetic memory according to the present invention comprises: a single magnetic memory cell having at least first to third magnetic layers, a first tunnel insulating layer between the first and second magnetic layers and a second tunnel insulating layer between the second and third magnetic layers. The resistance between the first and third magnetic layers when magnetization of the first and second magnetic layers are in opposite directions is different from the resistance between the second and third magnetic layers when magnetization of the second and third magnetic layers are in opposite directions. Multiple data are therefore stored into the memory cell.
摘要翻译：根据本发明的磁存储器包括：具有至少第一至第三磁性层的单个磁存储单元，在第一和第二磁性层之间的第一隧道绝缘层以及第二和第三磁性层之间的第二隧道绝缘层。当第一和第二磁性层的磁化方向处于相反方向时，第一和第三磁性层之间的电阻不同于当第二和第三磁性层的磁化方向相反时第二和第三磁性层之间的电阻。因此，多个数据被存储到存储单元中。

2. 发明授权

US06812537B2 Magnetic memory and method of operation thereof 失效
标题翻译：磁存储器及其操作方法
公开(公告)号：US06812537B2
公开(公告)日：2004-11-02
申请号：US10141602
申请日：2002-05-08
申请人： Takeshi Okazawa , Katsumi Suemitsu
发明人： Takeshi Okazawa , Katsumi Suemitsu
IPC分类号： H01L2982
CPC分类号： G11C11/5607 , G11C11/15 , Y10T428/2486
摘要： A magnetic memory according to the present invention comprises: a single magnetic memory cell having at least first to third magnetic layers, a first tunnel insulating layer between the first and second magnetic layers and a second tunnel insulating layer between the second and third magnetic layers. The resistance between the first and third magnetic layers when magnetization of the first and second magnetic layers are in opposite directions is different from the resistance between the second and third magnetic layers when magnetization of the second and third magnetic layers are in opposite directions. Multiple data are therefore stored into the memory cell.
摘要翻译：根据本发明的磁存储器包括：具有至少第一至第三磁性层的单个磁存储单元，在第一和第二磁性层之间的第一隧道绝缘层以及第二和第三磁性层之间的第二隧道绝缘层。当第一和第二磁性层的磁化方向处于相反方向时，第一和第三磁性层之间的电阻不同于当第二和第三磁性层的磁化方向相反时第二和第三磁性层之间的电阻。因此，多个数据被存储到存储单元中。

3. 发明授权

US07582923B2 Magnetic memory and manufacturing method for the same 有权
标题翻译：磁记忆及其制造方法相同
公开(公告)号：US07582923B2
公开(公告)日：2009-09-01
申请号：US11667834
申请日：2005-11-16
申请人： Yoshiyuki Fukumoto , Tetsuhiro Suzuki , Katsumi Suemitsu
发明人： Yoshiyuki Fukumoto , Tetsuhiro Suzuki , Katsumi Suemitsu
IPC分类号： H01L27/115
CPC分类号： H01L27/222 , G11C11/161 , G11C11/1659 , G11C11/1675 , H01L43/08
摘要： The present invention to provide a new technique to reduce a variation in switching field of a magnetization free layer in a magnetic memory. The magnetic memory according to the present invention includes a magnetization free layer including a ferromagnetic layer having a shape magnetic anisotropy in a first direction and a magnetic strain constant is positive; and a stress inducing structure configured to apply a tensile stress to said magnetization free layer in a same direction as the first direction.
摘要翻译：本发明提供一种减小磁存储器中的无磁化层的开关场变化的新技术。根据本发明的磁存储器包括具有在第一方向上具有形状磁各向异性的铁磁层和磁应变常数为正的铁磁层的无磁化层; 以及构造成在与第一方向相同的方向上对所述无磁化层施加拉伸应力的应力诱导结构。

4. 发明申请

US20060261425A1 Magnetic memory and method of manufacturing the memory 审中-公开
标题翻译：磁存储器和制造存储器的方法
公开(公告)号：US20060261425A1
公开(公告)日：2006-11-23
申请号：US10529851
申请日：2003-09-19
申请人： Katsumi Suemitsu , Kuniko Kikuta
发明人： Katsumi Suemitsu , Kuniko Kikuta
IPC分类号： H01L43/00
CPC分类号： H01L43/12 , H01L43/08
摘要： A magnetic memory includes a substrate, a lower portion structure of a magnetic element, an upper portion structure of the magnetic element, and a sidewall insulating film. The lower portion structure of the magnetic element is a portion of the magnetic element provided on the upside of the substrate. The upper portion structure of the magnetic element is a remaining portion of the magnetic element provided on the upside of the lower portion structure of the magnetic element. The sidewall insulating film is provided to surround the upper portion structure of the magnetic element and is formed of an insulating material. That is, the lower portion structure of the magnetic element is formed from one layer or a plurality of layers on a side close to the substrate, among a plurality of laminated films of the magnetic element provided on the upside of the substrate. The upper portion structure of the magnetic element is formed from layers other than the lower portion structure of the magnetic element among the plurality of laminated films of the magnetic element. Also, the side of the upper portion structure of the magnetic element is electrically insulated from other portions by the sidewall insulating film. That is, it is possible to avoid a short-circuit.
摘要翻译：磁存储器包括基板，磁性元件的下部结构，磁性元件的上部结构以及侧壁绝缘膜。磁性元件的下部结构是设置在基板的上侧的磁性元件的一部分。磁性元件的上部结构是设置在磁性元件的下部结构的上侧的磁性元件的剩余部分。侧壁绝缘膜设置为围绕磁性元件的上部结构，并且由绝缘材料形成。也就是说，磁性元件的下部结构在设置在基板的上侧的磁性元件的多个层压膜之中由靠近基板的一侧的一层或多层形成。磁性元件的上部结构由磁性元件的多个层合膜之中的除了磁性元件的下部结构之外的层形成。此外，磁性元件的上部结构的一侧通过侧壁绝缘膜与其它部分电绝缘。也就是说，可以避免短路。

5. 发明授权

US08830735B2 Magnetic memory including memory cells incorporating data recording layer with perpendicular magnetic anisotropy film 有权
标题翻译：磁存储器，包括具有垂直磁各向异性膜的数据记录层的存储单元
公开(公告)号：US08830735B2
公开(公告)日：2014-09-09
申请号：US13304083
申请日：2011-11-23
申请人： Eiji Kariyada , Katsumi Suemitsu , Hironobu Tanigawa , Kaoru Mori , Tetsuhiro Suzuki , Kiyokazu Nagahara , Yasuaki Ozaki , Norikazu Ohshima
发明人： Eiji Kariyada , Katsumi Suemitsu , Hironobu Tanigawa , Kaoru Mori , Tetsuhiro Suzuki , Kiyokazu Nagahara , Yasuaki Ozaki , Norikazu Ohshima
IPC分类号： G11B5/66 , G11C11/16 , G01R33/09 , G11C11/02 , G11C11/14 , G11C11/15
CPC分类号： H01L43/10 , G01R33/091 , G01R33/098 , G11C11/02 , G11C11/14 , G11C11/15 , G11C11/161 , Y10T428/1114 , Y10T428/1121 , Y10T428/1143
摘要： A magnetic memory includes: a magnetization fixed layer having perpendicular magnetic anisotropy, a magnetization direction of the magnetization fixed layer being fixed; an interlayer dielectric; an underlayer formed on upper faces of the magnetization fixed layer and the interlayer dielectric; and a data recording layer formed on an upper face of the underlayer and having perpendicular magnetic anisotropy. The underlayer includes: a first magnetic underlayer; and a non-magnetic underlayer formed on the first magnetic underlayer. The first magnetic underlayer is formed with such a thickness that the first magnetic underlayer does not exhibit in-plane magnetic anisotropy in a portion of the first magnetic underlayer formed on the interlayer dielectric.
摘要翻译：磁存储器包括：具有垂直磁各向异性的磁化固定层，磁化固定层的磁化方向固定; 层间电介质; 形成在磁化固定层和层间电介质的上表面上的底层; 以及形成在下层的上表面上并具有垂直磁各向异性的数据记录层。底层包括：第一磁性底层; 以及形成在第一磁性底层上的非磁性底层。形成第一磁性底层，使得第一磁性底层在形成于层间电介质上的第一磁性底层的一部分中不具有面内的磁各向异性。

6. 发明申请

US20120135275A1 MAGNETIC MEMORY INCLUDING MEMORY CELLS INCORPORATING DATA RECORDING LAYER WITH PERPENDICULAR MAGNETIC ANISOTROPY FILM 有权
标题翻译：磁记录，包括记录数据记录层，带有全息磁性膜片
公开(公告)号：US20120135275A1
公开(公告)日：2012-05-31
申请号：US13304083
申请日：2011-11-23
申请人： Eiji Kariyada , Katsumi Suemitsu , Hironobu Tanigawa , Kaoru Mori , Tetsuhiro Suzuki , Kiyokazu Nagahara , Yasuaki Ozaki , Norikazu Ohshima
发明人： Eiji Kariyada , Katsumi Suemitsu , Hironobu Tanigawa , Kaoru Mori , Tetsuhiro Suzuki , Kiyokazu Nagahara , Yasuaki Ozaki , Norikazu Ohshima
IPC分类号： G11B5/66
CPC分类号： H01L43/10 , G01R33/091 , G01R33/098 , G11C11/02 , G11C11/14 , G11C11/15 , G11C11/161 , Y10T428/1114 , Y10T428/1121 , Y10T428/1143
摘要： A magnetic memory includes: a magnetization fixed layer having perpendicular magnetic anisotropy, a magnetization direction of the magnetization fixed layer being fixed; an interlayer dielectric; an underlayer formed on upper faces of the magnetization fixed layer and the interlayer dielectric; and a data recording layer formed on an upper face of the underlayer and having perpendicular magnetic anisotropy. The underlayer includes: a first magnetic underlayer; and a non-magnetic underlayer formed on the first magnetic underlayer. The first magnetic underlayer is formed with such a thickness that the first magnetic underlayer does not exhibit in-plane magnetic anisotropy in a portion of the first magnetic underlayer formed on the interlayer dielectric.
摘要翻译：磁存储器包括：具有垂直磁各向异性的磁化固定层，磁化固定层的磁化方向固定; 层间电介质; 形成在磁化固定层和层间电介质的上表面上的底层; 以及形成在下层的上表面上并具有垂直磁各向异性的数据记录层。底层包括：第一磁性底层; 以及形成在第一磁性底层上的非磁性底层。形成第一磁性底层，使得第一磁性底层在形成于层间电介质上的第一磁性底层的一部分中不具有面内的磁各向异性。

7. 发明授权

US08716820B2 Magnetic memory 有权
标题翻译：磁记忆
公开(公告)号：US08716820B2
公开(公告)日：2014-05-06
申请号：US13609230
申请日：2012-09-10
申请人： Katsumi Suemitsu , Eiji Kariyada
发明人： Katsumi Suemitsu , Eiji Kariyada
IPC分类号： H01L29/82
CPC分类号： H01L43/12 , G11C11/161 , G11C11/1655 , G11C11/1659 , G11C11/1673 , G11C11/1675 , H01L27/226 , H01L43/08
摘要： A memory includes an underlying layer of a ferromagnetic body, a first nonmagnetic layer on the underlying layer, a data memorizing layer laid on the first nonmagnetic layer and made of a ferromagnetic body having perpendicular magnetic anisotropy, a reference layer coupled through a second nonmagnetic layer with the data memorizing layer, and first and second magnetization fixed layers laid underneath the underlying layer to come into contact with the underlying layer. The data memorizing layer includes a magnetization liberalized region having reversible magnetization, and overlapping with the reference layer, a first magnetization fixed region coupled with an end of the magnetization liberalized region, and having a magnetization direction fixed to +z direction by the first magnetization fixed layer, and a second magnetization fixed region coupled with a different end of the magnetization liberalized region, and having a magnetization direction fixed to −z direction by the second magnetization fixed layer.
摘要翻译：存储器包括铁磁体的下层，下层上的第一非磁性层，位于第一非磁性层上并由具有垂直磁各向异性的铁磁体构成的数据存储层，通过第二非磁性层耦合的参考层数据存储层，第一和第二磁化固定层铺设在下层之下，与下层相接触。数据存储层包括具有可逆磁化并与参考层重叠的磁化自由化区域，与磁化自由化区域的一端耦合的第一磁化固定区域，并且具有通过第一磁化固定的磁化方向固定到+ z方向以及与磁化自由化区域的不同端部耦合的第二磁化固定区域，并且具有由第二磁化固定层固定在-z方向的磁化方向。

8. 发明申请

US20080164502A1 Magnetic Memory and Manufacturing Method For the Same 有权
标题翻译：磁记忆和制造方法相同
公开(公告)号：US20080164502A1
公开(公告)日：2008-07-10
申请号：US11667834
申请日：2005-11-16
申请人： Yoshiyuki Fukumoto , Tetsuhiro Suzuki , Katsumi Suemitsu
发明人： Yoshiyuki Fukumoto , Tetsuhiro Suzuki , Katsumi Suemitsu
IPC分类号： H01L27/00
CPC分类号： H01L27/222 , G11C11/161 , G11C11/1659 , G11C11/1675 , H01L43/08
摘要： The present invention to provide a new technique to reduce a variation in switching field of a magnetization free layer in a magnetic memory. The magnetic memory according to the present invention includes a magnetization free layer including a ferromagnetic layer having a shape magnetic anisotropy in a first direction and a magnetic strain constant is positive; and a stress inducing structure configured to apply a tensile stress to said magnetization free layer in a same direction as the first direction.
摘要翻译：本发明提供一种减小磁存储器中的无磁化层的开关场变化的新技术。根据本发明的磁存储器包括具有在第一方向上具有形状磁各向异性的铁磁层和磁应变常数为正的铁磁层的无磁化层; 以及构造成在与第一方向相同的方向上对所述无磁化层施加拉伸应力的应力诱导结构。

9. 发明授权

US06246544B1 Magnetic disk drive 有权
标题翻译：磁盘驱动器
公开(公告)号：US06246544B1
公开(公告)日：2001-06-12
申请号：US09196737
申请日：1998-11-20
申请人： Katsumichi Tagami , Shinzo Tsuboi , Katsumi Suemitsu
发明人： Katsumichi Tagami , Shinzo Tsuboi , Katsumi Suemitsu
IPC分类号： G11B566
CPC分类号： G11B5/7315 , G11B5/59683 , G11B5/7325
摘要： A magnetic disk drive for recording and reproducing data out of a magnetic disk with a magnetoresisive (MR) head contacting the disk is disclosed. When the MR device is spaced from the surface of the medium by a recess of less than 15 nm inclusive, the surface of the medium is provided with a sheet resistance of less than 5 &OHgr;/cm2 inclusive. When the sheet resistance is greater than 5 &OHgr;/cm2, the recess is selected to be 16 nm or above. To enhance a frequency characteristic, the surface of the disk is provided with an undulation period of greater than 2 &mgr;m inclusive in the direction of movement of a head and a surface roughness of less than 1 nm inclusive. With this configuration, the disk drive obviates electrical faults ascribable to the sliding contact of the head and disk.
摘要翻译：公开了一种磁盘驱动器，用于利用与磁盘接触的磁感应（MR）磁头从磁盘中记录和再现数据。当MR器件通过具有小于15nm的凹槽与介质的表面间隔开时，介质的表面具有小于5欧姆/平方厘米（含）的薄层电阻。当薄层电阻大于5欧姆/平方厘米时，凹槽选择为16纳米或以上。为了提高频率特性，在头部的移动方向和小于1nm的表面粗糙度的范围内，盘的表面设置有大于2um的波动周期（包括端面）。通过这种配置，磁盘驱动器消除由于磁头和磁盘的滑动接触引起的电气故障。

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