公开(公告)号：US20090021869A1

公开(公告)日：2009-01-22

申请号：US12212162

申请日：2008-09-17

申请人： Yuuzo KAMIGUCHI ,  Hiromi YUASA ,  Tomohiko NAGATA ,  Hiroaki YODA ,  Katsuhiko KOUI ,  Masatoshi YOSHIKAWA ,  Hitoshi IWASAKI ,  Masashi SAHASHI ,  Masayuki TAKAGISHI

发明人： Yuuzo KAMIGUCHI ,  Hiromi YUASA ,  Tomohiko NAGATA ,  Hiroaki YODA ,  Katsuhiko KOUI ,  Masatoshi YOSHIKAWA ,  Hitoshi IWASAKI ,  Masashi SAHASHI ,  Masayuki TAKAGISHI

IPC分类号： G11B5/127

CPC分类号： H01L43/08 ,  B82Y10/00 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3133 ,  G11B5/3143 ,  G11B5/39 ,  G11B5/3903 ,  G11B5/3929 ,  G11B2005/3996 ,  H01F10/3259 ,  H01F10/3272 ,  Y10T428/1114

摘要： There is provided a practical magnetoresistance effect element which has an appropriate value of resistance, which can be sensitized and which has a small number of magnetic layers to be controlled, and a magnetic head and magnetic recording and/or reproducing system using the same. In a magnetoresistance effect element wherein a sense current is caused to flow in a direction perpendicular to the plane of the film, a resistance regulating layer is provided in at least one of a pinned layer, a free layer and an non-magnetic intermediate layer. The resistance regulating layer contains, as a principal component, an oxide, a nitride, a fluoride, a carbide or a boride. The resistance regulating layer may be a continuous film or may have pin holes. Thus, it is possible to provide a practical magnetoresistance effect element which has an appropriate value of resistance, which can be sensitized and which has a small number of magnetic layers, while effectively utilizing the scattering effect depending on spin.

公开(公告)号：US20120262820A1

公开(公告)日：2012-10-18

申请号：US13295866

申请日：2011-11-14

申请人： Takuya MATSUMOTO ,  Kenichiro YAMADA ,  Masayuki TAKAGISHI ,  Katsuhiko KOUI ,  Hitoshi IWASAKI

发明人： Takuya MATSUMOTO ,  Kenichiro YAMADA ,  Masayuki TAKAGISHI ,  Katsuhiko KOUI ,  Hitoshi IWASAKI

IPC分类号： G11B5/147 ,  G11B17/04 ,  G11B5/60

CPC分类号： G11B5/1278 ,  G11B5/3133

摘要： According to one embodiment, a magnetic head includes a main pole configured to apply a recording magnetic field to a recording layer of a recording medium, a return pole opposed to the main pole with a write gap therebetween, and a high-frequency oscillator between respective facing surfaces of the main pole and the return pole and configured to produce a high-frequency magnetic field. At least one of the main and return poles faces the high-frequency oscillator and includes a laminated structure portion includes a magnetic layer and a nonmagnetic layer laminated to one another.

摘要翻译： 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记录磁场;与主极相对的返回极与它们之间具有写入间隔;以及高频振荡器， 主极和返回极的面对表面，并被配置为产生高频磁场。 主极和返极两者中的至少一个面向高频振荡器，并且包括层叠结构部分，其包括彼此层叠的磁性层和非磁性层。

公开(公告)号：US20120154952A1

公开(公告)日：2012-06-21

申请号：US13404046

申请日：2012-02-24

申请人： Kenichiro YAMADA ,  Hitoshi IWASAKI ,  Masayuki TAKAGISHI ,  Tomomi FUNAYAMA ,  Masahiro TAKASHITA ,  Katsuhiko KOUI ,  Mariko KITAZAKI ,  Soichi OIKAWA

发明人： Kenichiro YAMADA ,  Hitoshi IWASAKI ,  Masayuki TAKAGISHI ,  Tomomi FUNAYAMA ,  Masahiro TAKASHITA ,  Katsuhiko KOUI ,  Mariko KITAZAKI ,  Soichi OIKAWA

IPC分类号： G11B5/147

CPC分类号： G11B5/3146 ,  B82Y25/00 ,  G11B5/02 ,  G11B5/3133 ,  H01F10/3254 ,  H01F10/3286 ,  H01L43/08

摘要： A magnetic recorder includes: a magnetic recording medium; a reproducing head; a magnetic recording head including: a main magnetic pole; a first magnetic layer containing a TM alloy; a second magnetic layer containing a TM alloy or an RE-TM alloy; a third magnetic layer containing an RE-TM alloy; a first intermediate layer provided between the first magnetic layer and the second magnetic layer; and a second intermediate layer provided between the second magnetic layer and the third magnetic layer; and a signal processing portion which performs signal writing into the magnetic recording medium by using the magnetic recording head and reading from the magnetic recording medium by using the reproducing head.

摘要翻译： 磁记录器包括：磁记录介质; 再现头 磁记录头，包括：主磁极; 含有TM合金的第一磁性层; 含有TM合金或RE-TM合金的第二磁性层; 含有RE-TM合金的第三磁性层; 设置在所述第一磁性层和所述第二磁性层之间的第一中间层; 以及设置在所述第二磁性层和所述第三磁性层之间的第二中间层; 以及信号处理部分，其通过使用磁记录头并通过使用再现头从磁记录介质读取来执行信号写入磁记录介质。

公开(公告)号：US20120170151A1

公开(公告)日：2012-07-05

申请号：US13420040

申请日：2012-03-14

申请人： Soichi OIKAWA ,  Hitoshi IWASAKI ,  Masayuki TAKAGISHI ,  Kenichiro YAMADA ,  Tomomi FUNAYAMA ,  Masahiro TAKASHITA ,  Katsuhiko KOUI ,  Mariko SHIMIZU

发明人： Soichi OIKAWA ,  Hitoshi IWASAKI ,  Masayuki TAKAGISHI ,  Kenichiro YAMADA ,  Tomomi FUNAYAMA ,  Masahiro TAKASHITA ,  Katsuhiko KOUI ,  Mariko SHIMIZU

IPC分类号： G11B5/127

CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/02 ,  G11B5/314 ,  G11B5/743 ,  G11B5/855 ,  G11B2005/0005

摘要： According to one embodiment, a recording track has a surface modification layer in the surface region. This surface modification layer has an anisotropic magnetic field Hk reduced from that of a region between adjacent recording tracks.

摘要翻译： 根据一个实施例，记录轨道在表面区域中具有表面改性层。 该表面改性层的各向异性磁场Hk比相邻记录轨道之间的区域减小。

公开(公告)号：US20090310254A1

公开(公告)日：2009-12-17

申请号：US12421558

申请日：2009-04-09

申请人： Soichi OIKAWA ,  Hitoshi IWASAKI ,  Masayuki TAKAGISHI ,  Kenichiro YAMADA ,  Tomomi FUNAYAMA ,  Masahiro TAKASHITA ,  Katsuhiko KOUI ,  Mariko SHIMIZU

发明人： Soichi OIKAWA ,  Hitoshi IWASAKI ,  Masayuki TAKAGISHI ,  Kenichiro YAMADA ,  Tomomi FUNAYAMA ,  Masahiro TAKASHITA ,  Katsuhiko KOUI ,  Mariko SHIMIZU

IPC分类号： G11B5/127 ,  G11B5/82

CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/02 ,  G11B5/314 ,  G11B5/743 ,  G11B5/855 ,  G11B2005/0005

摘要： According to one embodiment, a recording track has a surface modification layer in the surface region. This surface modification layer has an anisotropic magnetic field Hk reduced from that of a region between adjacent recording tracks.

摘要翻译： 根据一个实施例，记录轨道在表面区域中具有表面改性层。 该表面改性层的各向异性磁场Hk比相邻记录轨道之间的区域减小。

公开(公告)号：US20120134048A1

公开(公告)日：2012-05-31

申请号：US13218297

申请日：2011-08-25

申请人： Akihiko TAKEO ,  Norihito FUJITA ,  Mariko KITAZAKI ,  Katsuhiko KOUI ,  Hitoshi IWASAKI

发明人： Akihiko TAKEO ,  Norihito FUJITA ,  Mariko KITAZAKI ,  Katsuhiko KOUI ,  Hitoshi IWASAKI

IPC分类号： G11B5/127

CPC分类号： G11B5/3146 ,  G11B5/314 ,  G11B2005/0024 ,  Y10T428/1171

摘要： According to one embodiment, a spin torque oscillator includes a field generation layer, a spin injection layer including a first layer and a second layer, and an interlayer interposed between the field generation layer and the spin injection layer, wherein the first layer is interposed between the second layer and the interlayer and includes a (001)-oriented Heuslar magnetic alloy or a (001)-oriented magnetic material having a body-centered cubic lattice structure.

摘要翻译： 根据一个实施例，自旋扭矩振荡器包括场产生层，包括第一层和第二层的自旋注入层以及介于场产生层和自旋注入层之间的夹层，其中第一层介于 第二层和中间层，并且包括具有体心立方晶格结构的（001）取向的Heuslar磁性合金或（001）取向的磁性材料。

公开(公告)号：US20120134054A1

公开(公告)日：2012-05-31

申请号：US13224830

申请日：2011-09-02

申请人： Akihiko TAKEO ,  Mariko KITAZAKI ,  Kenichiro YAMADA ,  Katsuhiko KOUI ,  Hitoshi IWASAKI

发明人： Akihiko TAKEO ,  Mariko KITAZAKI ,  Kenichiro YAMADA ,  Katsuhiko KOUI ,  Hitoshi IWASAKI

IPC分类号： G11B5/127 ,  G11B5/60

CPC分类号： G11B5/3146 ,  G11B5/314 ,  G11B2005/0024

摘要： According to one embodiment, a magnetic recording head includes a main magnetic pole generating a recording magnetic field in a magnetic recording medium, a return yoke paired with the main magnetic pole and a spin torque oscillator interposed between the main magnetic pole and the return yoke and including a first magnetic layer, a second magnetic layer and a third magnetic layer of Fe4N, the second magnetic layer being interposed between the first magnetic layer and the third magnetic layer, wherein the magnetic recording head is configured to allow a current for oscillation to flow in a direction from the first magnetic layer to the third magnetic layer.

摘要翻译： 根据一个实施例，磁记录头包括在磁记录介质中产生记录磁场的主磁极，与主磁极成对的返回磁轭和插在主磁极和返回磁轭之间的自旋扭矩振荡器， 包括第一磁性层，第二磁性层和Fe4N的第三磁性层，所述第二磁性层介于所述第一磁性层和所述第三磁性层之间，其中所述磁记录头被配置为允许用于振荡的电流流动 在从第一磁性层到第三磁性层的方向上。

公开(公告)号：US20090059418A1

公开(公告)日：2009-03-05

申请号：US12196841

申请日：2008-08-22

申请人： Akihiko TAKEO ,  Tomomi FUNAYAMA ,  Masayuki TAKAGISHI ,  Masahiro TAKASHITA ,  Kenichiro YAMADA ,  Mariko SHIMIZU ,  Hitoshi IWASAKI ,  Junichi AKIYAMA

发明人： Akihiko TAKEO ,  Tomomi FUNAYAMA ,  Masayuki TAKAGISHI ,  Masahiro TAKASHITA ,  Kenichiro YAMADA ,  Mariko SHIMIZU ,  Hitoshi IWASAKI ,  Junichi AKIYAMA

IPC分类号： G11B21/02

CPC分类号： G11B5/102 ,  G11B5/314 ,  G11B5/6064 ,  G11B5/607 ,  G11B2005/0005 ,  G11B2005/0024

摘要： According to one embodiment, a magnetic head having a head slider which holds a magnetic head unit including a heat-generating element for controlling the flying-height and a high-frequency oscillator for performing high-frequency assisted writing, and on which terminals connected to the magnetic head elements are used in the smallest number required. Terminals are mounted on the head slider and are connected to the magnetic head unit. The terminals include at least one current-supplying terminal that is connected to the heat-generating element serving to control the flying height and to the high-frequency oscillator.

摘要翻译： 根据一个实施例，一种具有磁头滑块的磁头，该磁头滑动器保持包括用于控制飞行高度的发热元件的磁头单元和用于执行高频辅助写入的高频振荡器， 磁头元件以所需的最小数量使用。 端子安装在磁头滑块上并连接到磁头单元。 端子包括连接到用于控制飞行高度的发热元件和至高频振荡器的至少一个供电端子。

公开(公告)号：US20120009440A1

公开(公告)日：2012-01-12

申请号：US13242190

申请日：2011-09-23

申请人： Hideaki FUKUZAWA ,  Katsuhiko KOI ,  Hiromi FUKE ,  Hiroshi TOMITA ,  Hitoshi IWASAKI ,  Masashi SAHASHI

发明人： Hideaki FUKUZAWA ,  Katsuhiko KOI ,  Hiromi FUKE ,  Hiroshi TOMITA ,  Hitoshi IWASAKI ,  Masashi SAHASHI

IPC分类号： G11B5/39

CPC分类号： H01F10/3272 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3903 ,  G11B5/3932 ,  G11B2005/3996 ,  H01F10/3259 ,  H01F10/3295 ,  H01F41/325 ,  H01L43/08 ,  H01L43/10 ,  Y10T428/1114 ,  Y10T428/1121

摘要： There are provided a magnetoresistance effect element, a magnetic head, a magnetic head assembly and a magnetic recording system, which have high sensitivity and high reliability. The magnetoresistance effect element has two ferromagnetic layers, a non-magnetic layer provided between the ferromagnetic layers, and a layer containing an oxide or nitride as a principal component, wherein the layer containing the oxide or nitride as the principal component contains a magnetic transition metal element which does not bond to oxygen and nitrogen and which is at least one of Co, Fe and Ni.

摘要翻译： 提供了具有高灵敏度和高可靠性的磁阻效应元件，磁头，磁头组件和磁记录系统。 磁阻效应元件具有两个铁磁层，设置在铁磁层之间的非磁性层和包含以氧化物或氮化物为主要成分的层，其中以氧化物或氮化物为主要成分的层含有磁性过渡金属 元素，其不结合氧和氮并且是Co，Fe和Ni中的至少一种。

公开(公告)号：US20150221327A1

公开(公告)日：2015-08-06

申请号：US14171959

申请日：2014-02-04

申请人： Yousuke ISOWAKI ,  Satoshi SHIROTORI ,  Masayuki TAKAGISHI ,  Hitoshi IWASAKI

发明人： Yousuke ISOWAKI ,  Satoshi SHIROTORI ,  Masayuki TAKAGISHI ,  Hitoshi IWASAKI

IPC分类号： G11B5/39

CPC分类号： G11B5/3912 ,  G01R33/098 ,  G11B5/1272 ,  G11B5/3163 ,  G11B5/3932 ,  G11B5/398 ,  G11B2005/3996 ,  H01L43/08 ,  H01L43/12 ,  Y10T29/49826

摘要： According to one embodiment, a magnetoresistance effect element includes first and second shields, first and second side magnetic units, a stacked body, and a hard bias unit. The first side magnetic unit includes a first soft magnetic layer, a first nonmagnetic intermediate layer, and a second soft magnetic layer. The second side magnetic unit includes a third soft magnetic layer, a second nonmagnetic intermediate layer, and a fourth soft magnetic layer. The stacked body includes a fifth ferromagnetic layer, a third nonmagnetic intermediate layer, and a sixth ferromagnetic layer. The hard bias unit is provided between the first and second shields. A first distance between the first and fifth magnetic layers is shorter than a second distance between the second and sixth magnetic layers. A third distance between the third and fifth magnetic layers is shorter than a fourth distance between the fourth and sixth magnetic layers.

摘要翻译： 根据一个实施例，磁阻效应元件包括第一和第二屏蔽，第一和第二侧磁单元，堆叠体和硬偏置单元。 第一侧磁性单元包括第一软磁性层，第一非磁性中间层和第二软磁性层。 第二侧磁性单元包括第三软磁层，第二非磁性中间层和第四软磁层。 层叠体包括第五铁磁层，第三非磁性中间层和第六铁磁层。 硬偏置单元设置在第一和第二屏蔽之间。 第一和第五磁性层之间的第一距离比第二和第六磁性层之间的第二距离短。 第三和第五磁性层之间的第三距离比第四和第六磁性层之间的第四距离短。