公开(公告)号：US08634153B2

公开(公告)日：2014-01-21

申请号：US13351167

申请日：2012-01-16

申请人： Tomoyuki Maeda ,  Yousuke Isowaki ,  Akira Watanabe

发明人： Tomoyuki Maeda ,  Yousuke Isowaki ,  Akira Watanabe

IPC分类号： G11B5/09 ,  G11B5/82 ,  G11B5/65 ,  G11B5/66

CPC分类号： G11B5/7325 ,  G11B5/746 ,  G11B5/855

摘要： According to one embodiment, a magnetic recording medium includes a substrate, an auxiliary layer formed on the substrate, and at least one perpendicular magnetic recording layer formed on the auxiliary layer. The perpendicular magnetic recording layer includes a magnetic dot pattern. The perpendicular magnetic recording layer is made of an alloy material containing one element selected from iron and cobalt, and one element selected from platinum and palladium. This alloy material has the L10 structure, and is (001)-oriented. The auxiliary layer includes a dot-like first region covered with the magnetic dot pattern, and a second region not covered with the magnetic dot pattern. The first region is made of one metal selected from (100)-oriented nickel and (100)-oriented iron. The second region contains an oxide of the metal used in the first region.

摘要翻译： 根据一个实施例，磁记录介质包括基板，形成在基板上的辅助层以及形成在辅助层上的至少一个垂直磁记录层。 垂直磁记录层包括磁点图形。 垂直磁记录层由含有选自铁和钴的一种元素的合金材料和选自铂和钯的一种元素制成。 该合金材料具有L10结构，为（001）取向。 辅助层包括用磁点图案覆盖的点状第一区域和未被磁点图案覆盖的第二区域。 第一区域由选自（100）取向的镍和（100）取向的铁中的一种金属制成。 第二区域包含在第一区域中使用的金属的氧化物。

公开(公告)号：US08034472B2

公开(公告)日：2011-10-11

申请号：US12542372

申请日：2009-08-17

申请人： Shinichi Ishibashi ,  Migaku Takahashi ,  Shin Saito ,  Yuzo Sasaki ,  Atsushi Hashimoto ,  Gohei Kurokawa ,  Tomoyuki Maeda ,  Akihiko Takeo

发明人： Shinichi Ishibashi ,  Migaku Takahashi ,  Shin Saito ,  Yuzo Sasaki ,  Atsushi Hashimoto ,  Gohei Kurokawa ,  Tomoyuki Maeda ,  Akihiko Takeo

IPC分类号： G11B5/66

CPC分类号： G11B5/732 ,  B82Y25/00 ,  B82Y40/00 ,  G11B5/65 ,  G11B5/667 ,  H01F10/3272 ,  H01F41/306

摘要： The present invention provides a magnetic recording medium which is capable of improving the perpendicular orientation of a perpendicular magnetic recording layer while maintaining a writing performance during recording and obtaining both an improvement in the perpendicular orientation and fine magnetic crystal particles with a uniform diameter, and which enables information to be recorded or reproduced at high density, a method of manufacturing the same, and a magnetic recording/reproducing apparatus. A magnetic recording medium 10 according to the present invention includes at least a soft magnetic underlayer 2, an orientation control layer 3, a magnetic recording layer 4, and a protective layer 5 formed on a non-magnetic substrate 1. The orientation control layer 3 has a seed layer 6 and an intermediate layer 7. The seed layer 6 is made of a Cu—Ti alloy that has a face-centered cubic structure and includes Cu as a main component. The Cu—Ti alloy has a (111) crystal plane oriented substantially perpendicular to the surface of the non-magnetic substrate 1 and has a pseudo-hexagonal structure.

摘要翻译： 本发明提供一种磁记录介质，其能够在记录期间保持写入性能并且获得具有均匀直径的垂直取向和精细磁性结晶颗粒的改善的同时改善垂直磁记录层的垂直取向，并且其中 能够以高密度记录或再现信息，其制造方法和磁记录/再现装置。 根据本发明的磁记录介质10至少包括形成在非磁性基板1上的软磁性底层2，取向控制层3，磁记录层4和保护层5.取向控制层3 具有种子层6和中间层7.种子层6由具有面心立方结构并且包括Cu作为主要成分的Cu-Ti合金制成。 Cu-Ti合金具有大致垂直于非磁性基板1的表面定向的（111）晶面，并且具有假六边形结构。

公开(公告)号：US07901801B2

公开(公告)日：2011-03-08

申请号：US12166592

申请日：2008-07-02

申请人： Soichi Oikawa ,  Tomoyuki Maeda

发明人： Soichi Oikawa ,  Tomoyuki Maeda

IPC分类号： G11B5/66

CPC分类号： G11B5/732 ,  G11B5/66 ,  G11B5/667 ,  Y10T428/115

摘要： According to one embodiment, a perpendicular magnetic recording medium includes a substrate, and a first magnetic layer and a second magnetic layer formed on the substrate, in which supposing that, for the first and second magnetic layers, respectively, uniaxial magnetic anisotropy constants are Ku1 and Ku2, saturation magnetizations are Ms1 and Ms2, anisotropic magnetic fields are Hk1 and Hk2 and the thicknesses are t1 and t2, then following conditions are satisfied that Ku1 and Ku2 are 3×106 erg/cc or more, Ms1 is smaller than Ms2, Hk1 is larger than Hk2 and t1 is larger than t2.

摘要翻译： 根据一个实施例，垂直磁记录介质包括基板，以及形成在基板上的第一磁性层和第二磁性层，其中，对于第一和第二磁性层，单轴磁各向异性常数分别为Ku1 Ku2，饱和磁化为Ms1和Ms2，各向异性磁场为Hk1和Hk2，厚度为t1和t2，则满足Ku1和Ku2为3×106erg / cc或更高的条件，Ms1小于Ms2， Hk1大于Hk2，t1大于t2。

公开(公告)号：US07830058B2

公开(公告)日：2010-11-09

申请号：US11666754

申请日：2005-11-08

申请人： Tomoyuki Maeda

发明人： Tomoyuki Maeda

IPC分类号： H02K1/27 ,  H02K15/03

CPC分类号： H02K15/03 ,  H02K1/2733 ,  Y10T29/49012

摘要： A surface magnet type motor having a magnet at a surface of a rotor includes an anti-scattering tube formed in a cylindrical configuration longer in length than the magnet of the rotor in the axial direction, having the magnet press-fitted inside to prevent scattering of the magnet. A stress alleviation portion is provided to alleviate stress generated at an end of the magnet press-fitted into the anti-scattering tube.

摘要翻译： 具有转子表面的磁铁的表面磁铁式电动机包括形成为长轴方向长度比圆筒状的圆筒状的防散射管，该轴线方向的磁体压入内部，以防止散射 磁铁。 提供了一种减轻应力部分以减轻压入到防散射管中的磁体末端产生的应力。

公开(公告)号：US07694414B2

公开(公告)日：2010-04-13

申请号：US12099213

申请日：2008-04-08

申请人： Tomoyuki Maeda ,  Hideaki Matsushima

发明人： Tomoyuki Maeda ,  Hideaki Matsushima

IPC分类号： H05K3/30

CPC分类号： H01F17/0013 ,  H01F2017/002 ,  Y10T29/49002 ,  Y10T29/4902 ,  Y10T29/49071 ,  Y10T29/49073 ,  Y10T29/49078 ,  Y10T29/4913 ,  Y10T29/49155

摘要： A multilayered electronic component that is easy to manufacture and that has excellent electrical characteristics includes end portions of coil wiring patterns that oppose a coil connection electrode that is displaced on the surface of a second ceramic layer due to an increase or decrease in the number of first ceramic layers. A coil connection electrode has a shape in which surface portions of second ceramic layers or opposed second ceramic layers having the first ceramic layers disposed in between are connected to the end portions of the coil wiring patterns that oppose the respective coil connection electrode, which are displaced due to the increase or decrease in the number of the first ceramic layers. A connection wiring pattern has a shape in which one portion of a coil connection electrode is connected to one portion of an external extension electrode connection pattern.

摘要翻译： 容易制造并且具有优异的电特性的多层电子部件包括由于第一陶瓷层的数量的增加或减少而在第二陶瓷层的表面上位移的线圈连接电极的线圈布线图案的端部 陶瓷层。 线圈连接电极具有这样的形状，其中具有设置在其间的第一陶瓷层的第二陶瓷层或相对的第二陶瓷层的表面部分连接到与相应的线圈连接电极相对的线圈布线图案的端部， 由于第一陶瓷层的数量的增加或减少。 连接布线图形具有线圈连接电极的一部分连接到外部延伸电极连接图案的一部分的形状。

公开(公告)号：US20100033873A1

公开(公告)日：2010-02-11

申请号：US12536225

申请日：2009-08-05

申请人： Shinichi ISHIBASHI ,  Migaku Takahashi ,  Shin Saito ,  Yuzo Sasaki ,  Atsushi Hashimoto ,  Gohei Kurokawa ,  Tomoyuki Maeda ,  Akihiko Takeo

发明人： Shinichi ISHIBASHI ,  Migaku Takahashi ,  Shin Saito ,  Yuzo Sasaki ,  Atsushi Hashimoto ,  Gohei Kurokawa ,  Tomoyuki Maeda ,  Akihiko Takeo

IPC分类号： G11B5/667 ,  G11B5/84 ,  G11B5/82

CPC分类号： G11B5/82 ,  G11B5/65 ,  G11B5/667 ,  G11B5/732

摘要： In a perpendicular magnetic recording medium in which at least a soft magnetic underlayer, an orientation control layer, a magnetic recording layer and a protective layer are formed on a non-magnetic substrate in order from the bottom, the orientation control layer has a laminated structure of two or more layers including an intermediate layer and a seed layer which is disposed closer to the non-magnetic substrate than the intermediate layer. The seed layer includes two or more kinds of elements having a face-centered cubic structure, has face-centered cubic (111) plane crystals oriented in a direction perpendicular to a substrate surface, and has a pseudo-hexagonal structure.

摘要翻译： 在从底部起依次形成至少软磁性底层，取向控制层，磁记录层和保护层的垂直磁记录介质中，取向控制层具有层叠结构 包括比中间层更靠近非磁性基板设置的中间层和种子层的两层以上的层。 种子层包括具有面心立方结构的两种或更多种元件，具有在垂直于衬底表面的方向上取向的面心立方（111）面晶体，并且具有假六边形结构。

公开(公告)号：US20090141399A1

公开(公告)日：2009-06-04

申请号：US12274879

申请日：2008-11-20

申请人： Akira SAKAWAKI ,  Kenji Shimizu ,  Kazuo Kobayashi ,  Hiroshi Sakai ,  Soichi Oikawa ,  Takeshi Iwasaki ,  Tomoyuki Maeda ,  Futoshi Nakamura

发明人： Akira SAKAWAKI ,  Kenji Shimizu ,  Kazuo Kobayashi ,  Hiroshi Sakai ,  Soichi Oikawa ,  Takeshi Iwasaki ,  Tomoyuki Maeda ,  Futoshi Nakamura

IPC分类号： G11B5/82 ,  G11B5/66

CPC分类号： G11B5/656 ,  G11B5/65 ,  G11B5/66

摘要： A magnetic-recording medium which is provided on a nonmagnetic substrate with at least an orientation-controlling layer for controlling the orientation of a layer formed directly thereon, a perpendicularly magnetic layer having an easily magnetizing axis oriented mainly perpendicularly relative to the nonmagnetic substrate, and a protective layer. The perpendicularly magnetic layer includes two or more magnetic layers, at least one of the magnetic layers is a layer having Co as a main component and containing Pt as well and containing an oxide, and at least another of the magnetic layers is a layer having Co as a main component and containing Cr as well and containing no oxide.

摘要翻译： 一种磁记录介质，其设置在至少具有用于控制直接形成的层的取向的取向控制层的非磁性基板上，具有相对于非磁性基板主要垂直取向的易磁化轴的垂直磁性层，以及 保护层。 垂直磁性层包括两个或更多个磁性层，至少一个磁性层是具有Co作为主要成分并且还含有Pt并含有氧化物的层，并且至少另一个磁性层是具有Co 作为主要成分，并含有Cr，也不含氧化物。

公开(公告)号：US07453344B2

公开(公告)日：2008-11-18

申请号：US11842645

申请日：2007-08-21

申请人： Tomoyuki Maeda ,  Mitsuru Ueda

发明人： Tomoyuki Maeda ,  Mitsuru Ueda

IPC分类号： H01F5/00

CPC分类号： H01F17/0013 ,  H01F2017/002

摘要： A multilayer coil component is constructed such that inductance can be finely adjusted and the coupling between two helical coils can be strengthened without increasing the types of patterns of coil conductors. Coil conductors of a first coil unit are connected to each other in series via via-hole conductors so as to form a first helical coil. Coil conductors of a second coil unit are connected to each other in series via via-hole conductors so as to form a second helical coil. The first and second helical coils are coaxially positioned, have different numbers of turns, and are electrically connected to each other in parallel. The sum of turns of the coil conductors facing each other at a portion where the first coil unit and the second coil unit are adjacent to each other is larger than the sum of turns of the coil conductors positioned on both outer sides in the coil axis direction of the first and second helical coils.

摘要翻译： 构造多层线圈部件，使得可以精细地调整电感，并且可以加强两个螺旋线圈之间的耦合，而不增加线圈导体的图案的类型。 第一线圈单元的线圈导体经由通孔导体串联连接，以形成第一螺旋线圈。 第二线圈单元的线圈导体经由通孔导体串联连接，以形成第二螺旋线圈。 第一和第二螺旋线圈同轴定位，具有不同的匝数，并且彼此电连接。 在第一线圈单元和第二线圈单元彼此相邻的部分处彼此相对的线圈导体的匝数之和大于线圈轴线方向上位于两个外侧的线圈导体的匝数之和 的第一和第二螺旋线圈。

公开(公告)号：US20080250628A1

公开(公告)日：2008-10-16

申请号：US12099213

申请日：2008-04-08

申请人： Tomoyuki Maeda ,  Hideaki Matsushima

发明人： Tomoyuki Maeda ,  Hideaki Matsushima

IPC分类号： H01F7/06

CPC分类号： H01F17/0013 ,  H01F2017/002 ,  Y10T29/49002 ,  Y10T29/4902 ,  Y10T29/49071 ,  Y10T29/49073 ,  Y10T29/49078 ,  Y10T29/4913 ,  Y10T29/49155

摘要： A multilayered electronic component that is easy to manufacture and that has excellent electrical characteristics includes end portions of coil wiring patterns that oppose a coil connection electrode that is displaced on the surface of a second ceramic layer due to an increase or decrease in the number of first ceramic layers. A coil connection electrode has a shape in which surface portions of second ceramic layers or opposed second ceramic layers having the first ceramic layers disposed in between are connected to the end portions of the coil wiring patterns that oppose the respective coil connection electrode, which are displaced due to the increase or decrease in the number of the first ceramic layers. A connection wiring pattern has a shape in which one portion of a coil connection electrode is connected to one portion of an external extension electrode connection pattern.

摘要翻译： 容易制造并且具有优异的电特性的多层电子部件包括由于第一陶瓷层的数量的增加或减少而在第二陶瓷层的表面上位移的线圈连接电极的线圈布线图案的端部 陶瓷层。 线圈连接电极具有这样的形状，其中具有设置在其间的第一陶瓷层的第二陶瓷层或相对的第二陶瓷层的表面部分连接到与相应的线圈连接电极相对的线圈布线图案的端部， 由于第一陶瓷层的数量的增加或减少。 连接布线图形具有线圈连接电极的一部分连接到外部延伸电极连接图案的一部分的形状。

公开(公告)号：US20080131733A1

公开(公告)日：2008-06-05

申请号：US11947975

申请日：2007-11-30

申请人： Tomoyuki Maeda

发明人： Tomoyuki Maeda

IPC分类号： G11B5/66 ,  G01D9/00

CPC分类号： G11B5/667 ,  G11B5/65

摘要： According to one embodiment, disclosed is a perpendicular magnetic recording medium in which a magnetic recording layer has a stacked structure including a hard magnetic recording layer and soft magnetic recording layer each having magnetic crystal grains and a grain boundary region. The magnetic crystal grains in the hard magnetic recording layer contain Co and Pt, have the hcp structure, and are orientated in the (0001) plane. The magnetic recording layer has a residual squareness ratio of 0.95 or less and an irreversible reversal magnetic field of 0 Oe or less on a magnetization curve when a magnetic field perpendicular to the substrate surface is applied.

摘要翻译： 根据一个实施例，公开了一种垂直磁记录介质，其中磁记录层具有包括硬磁记录层和软磁记录层的堆叠结构，每个磁记录层和软磁记录层各具有磁晶粒和晶界区域。 硬磁记录层中的磁晶粒含有Co和Pt，具有hcp结构，并且在（0001）面内取向。 当施加垂直于衬底表面的磁场时，磁记录层的磁化曲线上的残余矩形比为0.95以下，不可逆的反转磁场为0Oe以下。