公开(公告)号：US07252896B2

公开(公告)日：2007-08-07

申请号：US10788259

申请日：2004-02-27

申请人： Futoshi Nakamura ,  Takashi Hikosaka ,  Soichi Oikawa ,  Takeshi Iwasaki ,  Tomoyuki Maeda ,  Hiroshi Sakai ,  Kenji Shimizu ,  Akira Sakawaki

发明人： Futoshi Nakamura ,  Takashi Hikosaka ,  Soichi Oikawa ,  Takeshi Iwasaki ,  Tomoyuki Maeda ,  Hiroshi Sakai ,  Kenji Shimizu ,  Akira Sakawaki

IPC分类号： G11B5/66

CPC分类号： G11B5/732 ,  G11B5/667 ,  G11B5/7325

摘要： An orientation control layer having a granular structure is formed between a substrate and magnetic recording layer, contains a base material and grains dispersed in the base material, and having a thickness smaller than a grain size of the grains.

摘要翻译： 具有颗粒结构的取向控制层形成在基板和磁记录层之间，包含分散在基材中的基材和颗粒，其厚度小于晶粒的晶粒尺寸。

公开(公告)号：US20060204791A1

公开(公告)日：2006-09-14

申请号：US10552445

申请日：2004-04-07

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： G11B5/66 ,  B05D5/12

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

摘要： A magnetic recording medium which is provided on a nonmagnetic substrate 1 with at least an orientation-controlling layer 3 for controlling the orientation of a layer formed directly thereon, a perpendicularly magnetic layer 4 having an easily magnetizing axis oriented mainly perpendicularly relative to the nonmagnetic substrate 1, and a protective layer 5 and characterized in that the perpendicularly magnetic layer 4 includes two or more magnetic layers, that at least one of the magnetic layers is a layer 4a having Co as a main component and containing Pt as well and containing an oxide and that at least another of the magnetic layers is a layer 4b having Co as a main component and containing Cr as well and containing no oxide.

摘要翻译： 一种磁性记录介质，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3的非磁性基板1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4 1和保护层5，其特征在于，垂直磁性层4包括两个或更多个磁性层，至少一个磁性层是具有Co作为主要成分并且含有Pt的层4a，并且含有 并且至少另一个磁性层是具有Co作为主要成分并且含有Cr并且不含氧化物的层4b。

公开(公告)号：US06972923B2

公开(公告)日：2005-12-06

申请号：US10396514

申请日：2003-03-26

申请人： Junichi Akiyama ,  Akira Kikitsu ,  Tadashi Kai ,  Toshihiko Nagase ,  Tomoyuki Maeda ,  Hisanori Aikawa

发明人： Junichi Akiyama ,  Akira Kikitsu ,  Tadashi Kai ,  Toshihiko Nagase ,  Tomoyuki Maeda ,  Hisanori Aikawa

IPC分类号： G11B5/65 ,  G11B5/00 ,  G11B5/596 ,  G11B5/66 ,  G11B5/667 ,  G11B5/738 ,  G11B5/74 ,  G11B5/82

CPC分类号： G11B5/66 ,  G11B5/59633 ,  G11B5/59683 ,  G11B5/667 ,  G11B5/74 ,  G11B5/82 ,  G11B2005/0029

摘要： A magnetic recording medium has a substrate, and a servo signal recording magnetic layer whose magnetization is oriented in a direction perpendicular to a surface thereof, a non-magnetic layer and a data recording magnetic layer, which are stacked on the substrate in the order mentioned. The servo signal recording magnetic layer has a coercivity higher than that of the data recording magnetic layer. The servo signal recording magnetic layer has servo tracks formed with a track pitch Tps, the servo tracks adjacent to each other in a track width direction being magnetized to opposite directions perpendicular to the film surface.

摘要翻译： 磁记录介质具有基板，磁化沿与其表面垂直的方向取向的伺服信号记录磁性层，非磁性层和数据记录磁性层，按照所述顺序堆叠在基板上 。 伺服信号记录磁性层的矫顽力高于数据记录磁性层的矫顽力。 伺服信号记录磁性层具有形成有磁道间距Tps的伺服磁道，在磁道宽度方向上彼此相邻的伺服磁道被磁化成垂直于膜表面的相反方向。

公开(公告)号：US20130302635A1

公开(公告)日：2013-11-14

申请号：US13988236

申请日：2011-11-22

申请人： Shinichi Obata ,  Shinya Hiraoka ,  Fumiaki Hosokoshi ,  Ayumu Tateoka ,  Hideaki Matsushima ,  Koichi Miyake ,  Sakiko Tomonaga ,  Tomoyuki Maeda

发明人： Shinichi Obata ,  Shinya Hiraoka ,  Fumiaki Hosokoshi ,  Ayumu Tateoka ,  Hideaki Matsushima ,  Koichi Miyake ,  Sakiko Tomonaga ,  Tomoyuki Maeda

IPC分类号： B32B15/01

CPC分类号： B32B15/01 ,  C23C2/02 ,  C23C28/00 ,  C23C28/30 ,  C23C28/321 ,  C23C28/324 ,  C23C28/3455 ,  C25D1/04 ,  C25D3/565 ,  C25D5/10 ,  C25D5/48 ,  C25D7/0614 ,  C25D11/38 ,  H01B1/026 ,  H05K1/09 ,  H05K2201/0355 ,  Y10T428/12438 ,  Y10T428/12472 ,  Y10T428/12792

摘要： An object of the present invention is to provide a copper foil excellent in softening resistance performance which reduces decrease in tensile strength after heat treatment at about 350° C. to 400° C. In order to achieve the object, a surface-treated copper foil provided with a rust-proofing treatment layer on both surfaces of a copper foil in which a rust-proofing treatment layer is constituted by zinc, and the either rust-proofing treatment layer is a zinc layer having zinc amount of 20 mg/m2 to 1,000 mg/m2; and the copper foil contains one or two or more of small amount elements selected from carbon, sulfur, chlorine and nitrogen, and a sum amount thereof is 100 ppm or more is adopted.

摘要翻译： 本发明的目的是提供一种耐软化性能优异的铜箔，其在约350℃〜400℃下热处理后的抗拉强度降低。为了达到上述目的，将表面处理铜箔 在由铜构成的防锈处理层的铜箔的两面上设有防锈处理层，任一防锈处理层为锌量为20mg / m 2〜1000的锌层 mg / m2; 铜箔含有一种或两种以上选自碳​​，硫，氯和氮的少量元素，其总量为100ppm以上。

公开(公告)号：US20120275059A1

公开(公告)日：2012-11-01

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： G11B5/127 ,  G11B5/667 ,  B05D5/12 ,  G11B5/65

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：US20120275058A1

公开(公告)日：2012-11-01

申请号：US13351127

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： G11B5/66 ,  G11B5/127 ,  G11B5/84 ,  B05D5/12

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

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 a (100)-oriented nickel oxide. The second region contains nickel used in the first region as a main component.

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（100）取向的氧化镍制成。 第二区域包含在第一区域中使用的镍作为主要成分。

公开(公告)号：US08034471B2

公开(公告)日：2011-10-11

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： G11B5/66

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：US20110242702A1

公开(公告)日：2011-10-06

申请号：US13051640

申请日：2011-03-18

申请人： Tomoyuki Maeda

发明人： Tomoyuki Maeda

IPC分类号： G11B5/127 ,  G11B5/667 ,  C23C14/08 ,  C23C14/14 ,  C23C14/34

CPC分类号： C23C14/08 ,  C23C14/083 ,  C23C14/10 ,  C23C14/16 ,  C23C14/3414 ,  G11B5/65 ,  G11B5/66 ,  G11B5/667 ,  G11B5/7325 ,  G11B5/7379 ,  G11B5/851 ,  H01J37/3429

摘要： According to one embodiment, a perpendicular magnetic recording layer comprises a granular film type recording layer and a continuous film type recording layer. The granular film type recording layer comprises a first granular film type recording layer in which magnetic crystal grains in a film plane has an average crystal grain diameter of 3 to 7 nm, and a second granular film type recording layer including magnetic crystal grains having an in plane average crystal grain diameter larger than that of the magnetic crystal grains of the first granular film type recording layer.

摘要翻译： 根据一个实施例，垂直磁记录层包括粒状膜型记录层和连续膜型记录层。 粒状膜型记录层包括第一粒状膜型记录层，其中膜平面中的磁性晶粒具有3至7nm的平均晶粒直径，以及第二粒状膜型记录层，包括具有 平面晶粒直径大于第一粒状膜型记录层的磁晶粒的平均晶粒直径。

公开(公告)号：US07862915B2

公开(公告)日：2011-01-04

申请号：US11640979

申请日：2006-12-19

申请人： Tomoyuki Maeda ,  Migaku Takahashi ,  Masahiro Oka

发明人： Tomoyuki Maeda ,  Migaku Takahashi ,  Masahiro Oka

IPC分类号： G11B5/65

CPC分类号： G11B5/7325 ,  G11B5/1278 ,  G11B5/82

摘要： According to one embodiment, a multilayered underlayer including a first underlayer containing Cu aligned in a (111) plane and a second underlayer formed on the Cu underlayer and containing Cu and nitrogen as main components is formed.

摘要翻译： 根据一个实施方案，形成包含在（111）面中排列的Cu的第一底层和形成在Cu底层上并含有Cu和氮作为主要成分的第二底层的多层底层。

公开(公告)号：US20100165510A1

公开(公告)日：2010-07-01

申请号：US12601372

申请日：2008-05-21

申请人： Migaku Takahashi ,  Shin Saito ,  Tomoyuki Maeda ,  Akihiko Takeo ,  Yuzo Sasaki ,  Ryuji Sakaguchi

发明人： Migaku Takahashi ,  Shin Saito ,  Tomoyuki Maeda ,  Akihiko Takeo ,  Yuzo Sasaki ,  Ryuji Sakaguchi

IPC分类号： G11B5/82

CPC分类号： G11B5/667 ,  G11B5/65 ,  G11B5/66 ,  G11B5/7379

摘要： A magnetic recording medium comprising a substrate, at least one soft magnetic underlayer formed on the substrate, a perpendicular magnetic recording layer formed on the soft magnetic underlayer, and a protective layer formed on the perpendicular magnetic recording layer, is provided wherein the perpendicular magnetic recording layer is comprised of a primary recording layer, a non-magnetic intermediate layer and an auxiliary layer; the primary recording layer comprises magnetic crystal grains and grain boundary portions surrounding the magnetic crystal grains, and has a perpendicular magnetic anisotropy; the auxiliary layer has a negative magneto crystalline anisotropy; and the non-magnetic intermediate layer is formed between the primary recording layer and the auxiliary layer and comprises at least one metal selected from Ru, Rh and Ir, or at least one alloy thereof. This magnetic recording medium exhibits high heat resistance and good recording/reproducing characteristics, and enables a high recording density.

摘要翻译： 一种磁记录介质，其特征在于，包括基板，形成在基板上的至少一个软磁性底层，形成在软磁性底层上的垂直磁记录层和形成在垂直磁记录层上的保护层，其中垂直磁记录 层由主记录层，非磁性中间层和辅助层构成; 主记录层包括磁晶粒和围绕磁晶粒的晶界部分，并且具有垂直的磁各向异性; 辅助层具有负磁结晶各向异性; 并且非磁性中间层形成在初级记录层和辅助层之间，并且包含至少一种选自Ru，Rh和Ir的金属，或其至少一种合金。 该磁记录介质具有高的耐热性和良好的记录/再现特性，并且能够实现高的记录密度。