公开(公告)号：US07947385B2

公开(公告)日：2011-05-24

申请号：US12496299

申请日：2009-07-01

申请人： Ryosaku Inamura ,  Yuta Toyoda

发明人： Ryosaku Inamura ,  Yuta Toyoda

IPC分类号： G11B5/66

CPC分类号： G11B5/732

摘要： A magnetic storage medium includes a seed layer made of non-magnetic and amorphous Co—Cr—W, an intermediate layer having a crystalline structure, which is made of a non-magnetic material on the seed layer and has a c-axis oriented in a thickness direction of the seed layer in a hexagonal close-packed structure, and a recording layer made of mainly a magnetic material on the intermediate layer and having information magnetically recorded therein.

摘要翻译： 磁存储介质包括由非磁性和无定形Co-Cr-W制成的晶种层，该晶体结构在晶种层上由非磁性材料制成并且具有c轴取向为 六方密堆积结构中种子层的厚度方向以及在中间层上主要由磁性材料制成的记录层，并且具有磁性地记录在其中的信息。

公开(公告)号：US07862916B2

公开(公告)日：2011-01-04

申请号：US12362677

申请日：2009-01-30

申请人： Ryosaku Inamura

发明人： Ryosaku Inamura

IPC分类号： G11B5/66

CPC分类号： G11B5/667 ,  G11B5/65 ,  G11B5/66 ,  G11B5/82 ,  Y10T428/115

摘要： The perpendicular magnetic recording medium includes a non-magnetic underlayer composed of Ru or an Ru alloy having a columnar structure in which crystalline particles are isolated from each other by a space, a non-magnetic granular layer provided on the non-magnetic underlayer and composed of crystalline particles and a non-soluble phase and a granular magnetic layer provided on the non-magnetic granular layer and composed of CoCrPt alloy crystalline particles and the non-soluble phase, wherein when a lattice constant in an in-plane direction of the non-magnetic underlayer is a1, the lattice constant in the in-plane direction of the non-magnetic granular layer is a2, and the lattice constant in the in-plane direction of the granular magnetic layer is a3, the relation a1>a2>a3 is satisfied.

摘要翻译： 垂直磁记录介质包括由Ru组成的非磁性底层或具有结晶颗粒通过空间彼此隔离的柱状结构的Ru合金，设置在非磁性底层上的非磁性粒状层， 的非磁性颗粒层和由CoCrPt合金结晶颗粒和非可溶相组成的不溶性相和不溶性相和粒状磁性层，其中当非磁性颗粒层在非磁性颗粒层的非平面方向上的晶格常数 非磁性粒子层的面内方向的晶格常数为a2，粒状磁性层的面内方向的晶格常数为a3，关系式a1> a2> a3 满意

公开(公告)号：US07596058B2

公开(公告)日：2009-09-29

申请号：US11038679

申请日：2005-01-19

申请人： Toshio Sugimoto ,  Ryosaku Inamura

发明人： Toshio Sugimoto ,  Ryosaku Inamura

IPC分类号： G11B11/00

CPC分类号： G11B5/66 ,  G11B5/82 ,  G11B2005/0002 ,  G11B2005/0021 ,  G11B2005/0029

摘要： The magnetic recording medium comprises a backing layer including a first magnetic layer, a second magnetic layer which is formed over the first magnetic layer, is ferrimagnetic and is magnetized in a direction opposite to the first magnetic layer, and a third magnetic layer formed over the second magnetic layer and magnetized in a direction opposite to the second magnetic layer; and a perpendicular magnetic recording layer for recording magnetic information formed over the backing layer. Antiferromagnetic exchange interconnection is formed between the first magnetic layer and the second magnetic layer and between the second magnetic layer and the third magnetic layer.

摘要翻译： 磁记录介质包括背衬层，其包括第一磁性层，形成在第一磁性层上的第二磁性层，是亚铁磁性的，并且沿与第一磁性层相反的方向被磁化;以及第三磁性层 第二磁性层，并在与第二磁性层相反的方向上磁化; 以及用于记录形成在背衬层上的磁信息的垂直磁记录层。 在第一磁性层和第二磁性层之间以及第二磁性层和第三磁性层之间形成反铁磁性交换互连。

公开(公告)号：US07525762B2

公开(公告)日：2009-04-28

申请号：US10718202

申请日：2003-11-20

申请人： Ryosaku Inamura ,  Kazumasa Shimoda ,  Toshio Sugimoto ,  Takuya Uzumaki

发明人： Ryosaku Inamura ,  Kazumasa Shimoda ,  Toshio Sugimoto ,  Takuya Uzumaki

IPC分类号： G11B5/667

CPC分类号： G11B5/7325 ,  G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/64 ,  G11B5/66 ,  G11B5/82 ,  G11B2005/0002 ,  G11B2005/0021 ,  G11B2005/0029

摘要： A perpendicular magnetic recording medium at least comprises a perpendicular magnetic recording layer and a backing layer backing the perpendicular magnetic recording layer. The backing layer has an in-plane magnetization and is formed of a ferrimagnetic material having a compensation temperature in the vicinity of a recording/reproducing temperature in which reproducing of magnetic information is made from the perpendicular magnetic recording layer. A magnetic storage apparatus for recording and reproducing magnetic information using the perpendicular magnetic recording medium is also disclosed.

摘要翻译： 垂直磁记录介质至少包括垂直磁记录层和背衬垂直磁记录层的背衬层。 背衬层具有平面内磁化，并且由具有补偿温度的磁铁材料形成，所述补偿温度在记录/再现温度附近，其中磁信息从垂直磁记录层进行再现。 还公开了一种使用垂直磁记录介质记录和再现磁信息的磁存储装置。

公开(公告)号：US20070124749A1

公开(公告)日：2007-05-31

申请号：US11699707

申请日：2007-01-30

申请人： Ryosaku Inamura ,  Kazumasa Shimoda ,  Toshio Sugimoto ,  Takuya Uzumaki

发明人： Ryosaku Inamura ,  Kazumasa Shimoda ,  Toshio Sugimoto ,  Takuya Uzumaki

IPC分类号： G11B7/24 ,  G11B23/03

CPC分类号： G11B5/7325 ,  G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/64 ,  G11B5/66 ,  G11B5/82 ,  G11B2005/0002 ,  G11B2005/0021 ,  G11B2005/0029

摘要： A perpendicular magnetic recording medium at least comprises a perpendicular magnetic recording layer and a backing layer backing the perpendicular magnetic recording layer. The backing layer has an in-plane magnetization and is formed of a ferrimagnetic material having a compensation temperature in the vicinity of a recording/reproducing temperature in which reproducing of magnetic information is made from the perpendicular magnetic recording layer. A magnetic storage apparatus for recording and reproducing magnetic information using the perpendicular magnetic recording medium is also disclosed.

摘要翻译： 垂直磁记录介质至少包括垂直磁记录层和背衬垂直磁记录层的背衬层。 背衬层具有平面内磁化，并且由具有补偿温度的磁铁材料形成，所述补偿温度在记录/再现温度附近，其中磁信息从垂直磁记录层进行再现。 还公开了一种使用垂直磁记录介质记录和再现磁信息的磁存储装置。

公开(公告)号：US07611783B2

公开(公告)日：2009-11-03

申请号：US11374424

申请日：2006-03-14

申请人： Ryosaku Inamura ,  Isatake Kaitsu ,  Takuya Uzumaki

发明人： Ryosaku Inamura ,  Isatake Kaitsu ,  Takuya Uzumaki

IPC分类号： G11B5/66

CPC分类号： G11B5/65 ,  G11B5/656 ,  G11B5/66 ,  G11B5/667 ,  G11B5/732 ,  G11B5/7325

摘要： A magnetic recording medium includes; a base member; an underlayer formed on the base member; a main recording layer formed on the underlayer, and a writing assist layer formed on or under the main recording layer in contact with the main recording layer. The main recording layer has perpendicular magnetic anisotropy with an anisotropic magnetic field of Hk1 and an inclination of a reversal part of a magnetization curve of a1. The writing assist layer has an anisotropic magnetic field of Hk2 and an inclination of a reversal part of a magnetization curve of a2. The anisotropic magnetic fields Hk1 and Hk2 and the inclinations a1 and a2 satisfy Hk1>Hk2 and a2>a1.

摘要翻译： 磁记录介质包括： 基地会员 形成在所述基底构件上的底层; 形成在底层上的主记录层，以及形成在与主记录层接触的主记录层上或下面的书写辅助层。 主记录层具有Hk1的各向异性磁场和a1的磁化曲线的反转部分的倾斜的垂直磁各向异性。 写辅助层具有Hk2的各向异性磁场和a2的磁化曲线的反转部分的倾斜度。 各向异性磁场Hk1和Hk2以及倾角a1和a2满足Hk1> Hk2和a2> a1。

公开(公告)号：US07295404B2

公开(公告)日：2007-11-13

申请号：US11699707

申请日：2007-01-30

申请人： Ryosaku Inamura ,  Kazumasa Shimoda ,  Toshio Sugimoto ,  Takuya Uzumaki

发明人： Ryosaku Inamura ,  Kazumasa Shimoda ,  Toshio Sugimoto ,  Takuya Uzumaki

IPC分类号： G11B5/66

CPC分类号： G11B5/7325 ,  G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/64 ,  G11B5/66 ,  G11B5/82 ,  G11B2005/0002 ,  G11B2005/0021 ,  G11B2005/0029

摘要： A perpendicular magnetic recording medium at least comprises a perpendicular magnetic recording layer and a backing layer backing the perpendicular magnetic recording layer. The backing layer has an in-plane magnetization and is formed of a ferrimagnetic material having a compensation temperature in the vicinity of a recording/reproducing temperature in which reproducing of magnetic information is made from the perpendicular magnetic recording layer. A magnetic storage apparatus for recording and reproducing magnetic information using the perpendicular magnetic recording medium is also disclosed.

公开(公告)号：US20070224453A1

公开(公告)日：2007-09-27

申请号：US11475997

申请日：2006-06-28

申请人： Ryosaku Inamura ,  Isatake Kaitsu

发明人： Ryosaku Inamura ,  Isatake Kaitsu

IPC分类号： G11B5/66

CPC分类号： G11B5/66 ,  G11B5/65

摘要： According to the present invention, there is provided a magnetic recording medium 10 which includes: a non-magnetic base 1; a non-magnetic underlayer 3 formed on the non-magnetic base 1; a first recording layer 4 formed on the non-magnetic underlayer 3, the first recording layer 4 having a perpendicular magnetic anisotropy with an anisotropic magnetic field of Hk1, a thickness of t1, and a saturation magnetization of Ms1; and a second recording layer 5 formed above or under the first recording layer 4, the second recording layer 5 having a perpendicular magnetic anisotropy with an anisotropic magnetic field of Hk2, a thickness of t2, and a saturation magnetization of Ms2, wherein the anisotropic magnetic fields Hk1 and Hk2, the thicknesses t1 and t2, and the saturation magnetizations Ms1 and Ms2 satisfy Hk2

摘要翻译： 根据本发明，提供了一种磁记录介质10，其包括：非磁性基座1; 形成在非磁性基体1上的非磁性底层3; 形成在非磁性底层3上的第一记录层4，具有垂直磁各向异性的第一记录层4，具有H k1的各向异性磁场，厚度t 1， SUB>，以及Ms <1的饱和磁化强度; 和形成在第一记录层4的上方或下方的第二记录层5，具有垂直磁各向异性的第二记录层5，具有H 2 K 2 N的各向异性磁场，厚度t 2 和 _{2的饱和磁化强度，其中各向异性磁场H k1和H k2，厚度t 1 和t 2> 2，饱和磁化Ms Ms 1和Ms 2满足H k2 < 分别为（H 1/2）2和（t 2，M 2）2。}

公开(公告)号：US20060222900A1

公开(公告)日：2006-10-05

申请号：US11167579

申请日：2005-06-28

申请人： Ryosaku Inamura ,  Isatake Kaitsu ,  Takuya Uzumaki

发明人： Ryosaku Inamura ,  Isatake Kaitsu ,  Takuya Uzumaki

IPC分类号： G11B5/66

CPC分类号： G11B5/65 ,  G11B5/656 ,  G11B5/66 ,  G11B5/667 ,  G11B5/7325 ,  G11B5/7379

摘要： A magnetic recording medium includes; a base member; an underlayer formed on the base member; a main recording layer formed on the underlayer, and a writing assist layer formed on or under the main recording layer in contact with the main recording layer. The main recording layer has perpendicular magnetic anisotropy with an anisotropic magnetic field of Hk1 and an inclination of a reversal part of a magnetization curve of a1. The writing assist layer has an anisotropic magnetic field of Hk2 and an inclination of a reversal part of a magnetization curve of a2. The anisotropic magnetic fields Hk1 and Hk2 and the inclinations a1 and a2 satisfy Hk1>Hk2 ∞0 and a1>a2.

摘要翻译： 磁记录介质包括： 基地会员 形成在所述基底构件上的底层; 形成在底层上的主记录层，以及形成在与主记录层接触的主记录层上或下面的书写辅助层。 主记录层具有垂直磁各向异性，其各向异性磁场为H＆gt; k1＆lt; 1＆lt; 1＆gt;的磁化曲线的反转部分的倾斜度。 写辅助层具有H＆gt; k2＆gt;的各向异性磁场和2 的磁化曲线的反转部分的倾斜度。 各向异性磁场H k1和H k2以及倾斜a 1和2 2都满足H < k1 H＆lt; k2＆gt;∞0和＆lt; 1＆lt; / SUB＆gt;＆lt; 2＆lt; 2＆gt ;.

公开(公告)号：US07871718B2

公开(公告)日：2011-01-18

申请号：US12403215

申请日：2009-03-12

申请人： Ryosaku Inamura ,  Yuta Toyoda

发明人： Ryosaku Inamura ,  Yuta Toyoda

IPC分类号： G11B5/66

CPC分类号： G11B5/732 ,  B82Y10/00 ,  G11B5/66 ,  G11B5/743 ,  G11B5/746 ,  G11B5/82

摘要： A perpendicular magnetic recording medium includes a nonmagnetic seed layer, a nonmagnetic intermediate layer provided on the nonmagnetic seed layer, and a perpendicular recording layer provided on the nonmagnetic intermediate layer. The nonmagnetic seed layer includes a first seed layer made of an amorphous material, and a second seed layer provided between the first seed layer and the nonmagnetic intermediate layer and made of a material having a fcc structure. The amorphous material includes at least one element selected from a group consisting of Ta, W, Nb, Mo, Zr and alloys thereof which include at least one of Ta, W, Nb, Mo and Zr as a main component exceeding 50 at. %.

摘要翻译： 垂直磁记录介质包括非磁性种子层，设置在非磁性种子层上的非磁性中间层和设置在非磁性中间层上的垂直记录层。 非磁性种子层包括由非晶材料制成的第一籽晶层和设置在第一种子层和非磁性中间层之间并由具有fcc结构的材料制成的第二籽晶层。 无定形材料包括选自Ta，W，Nb，Mo，Zr及其合金中的至少一种元素，其包括作为主要成分的Ta，W，Nb，Mo和Zr中的至少一种超过50at。 ％。