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：US07807278B2

公开(公告)日：2010-10-05

申请号：US11388991

申请日：2006-03-24

申请人： Toshio Sugimoto ,  Ryosaku Inamura ,  Takuya Uzumaki

发明人： Toshio Sugimoto ,  Ryosaku Inamura ,  Takuya Uzumaki

IPC分类号： G11B5/66

CPC分类号： G11B5/667 ,  G11B5/7325

摘要： A perpendicular magnetic recording medium, including a soft-magnetic backing layer; and a recording layer provided over the oft-magnetic backing layer. There is provided a magnetic flux slit layer between the soft-magnetic backing layer and the recording layer. The magnetic flux slit layer includes a soft-magnetic layer having a generally columnar structure generally isolated magnetically in an in-plane direction. The magnetic flux slit layer contains at least one selected from the group consisting of Co, Fe, Ni, a Co alloy, a Fe alloy, and a Ni alloy, as a major component, and the magnetic flux slit layer further contains any one selected from the group consisting of Ta, Cu, Pb, Cr, and Re.

摘要翻译： 垂直磁记录介质，包括软磁背衬层; 以及设置在磁性背衬层上的记录层。 在软磁背衬层和记录层之间设置磁通缝隙层。 磁通量狭缝层包括具有通常在面内方向上磁性地隔离的大致柱状结构的软磁性层。 磁通缝隙层包含选自由Co，Fe，Ni，Co合金，Fe合金和Ni合金组成的组中的至少一种作为主要成分，并且磁通量狭缝层还包含选择的任何一种 由Ta，Cu，Pb，Cr和Re组成的组。

公开(公告)号：US20090296278A1

公开(公告)日：2009-12-03

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： G11B5/82 ,  G11B5/66 ,  G11B5/667

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。 ％。

公开(公告)号：US20090197122A1

公开(公告)日：2009-08-06

申请号：US12362677

申请日：2009-01-30

申请人： Ryosaku INAMURA

发明人： Ryosaku INAMURA

IPC分类号： G11B5/706 ,  G11B5/33

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：US20080292909A1

公开(公告)日：2008-11-27

申请号：US12114431

申请日：2008-05-02

申请人： Satoshi Igarashi ,  Akira Kikuchi ,  Isatake Kaitsu ,  Ryosaku Inamura ,  Kenji Sato ,  Shinya Sato ,  Hideaki Takahoshi ,  Atsushi Endo ,  Hisato Shibata

发明人： Satoshi Igarashi ,  Akira Kikuchi ,  Isatake Kaitsu ,  Ryosaku Inamura ,  Kenji Sato ,  Shinya Sato ,  Hideaki Takahoshi ,  Atsushi Endo ,  Hisato Shibata

IPC分类号： G11B5/706

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

摘要： This magnetic recording medium has a substrate, a nonmagnetic granular layer formed above the substrate and a recording layer formed on the nonmagnetic granular layer. The nonmagnetic granular layer is made of CoCr alloy with an hcp or an fcc crystal structure in which a nonmagnetic material segregates virtually-columnar magnetic grains. The magnetic recording medium and the magnetic storage apparatus in which the medium is used have improved reading/writing performances.

摘要翻译： 该磁记录介质具有基板，形成在基板上方的非磁性粒状层和形成在非磁性粒状层上的记录层。 非磁性粒状层由具有hcp或fcc晶体结构的CoCr合金制成，其中非磁性材料分离出实际上柱状的磁性颗粒。 使用介质的磁记录介质和磁存储装置具有改进的读/写性能。

公开(公告)号：US20080080093A1

公开(公告)日：2008-04-03

申请号：US11898959

申请日：2007-09-18

申请人： Ryosaku Inamura ,  Isatake Kaitsu

发明人： Ryosaku Inamura ,  Isatake Kaitsu

IPC分类号： G11B5/127

CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/65 ,  G11B5/66 ,  G11B5/667 ,  G11B5/743 ,  G11B5/746 ,  G11B2005/0029

摘要： A magnetic recording medium according to the present invention includes a nonmagnetic base material, a soft magnetic under layer, an interlayer, a recording layer and a protective layer, which are stacked over the base material. The soft magnetic under layer is formed of a lower soft magnetic layer, a magnetic domain control layer (or a nonmagnetic layer) and an upper soft magnetic layer. The lower and upper soft magnetic layers are each made of a material amorphized by adding at least one of zirconium (Zr) and tantalum (Ta) to an iron-cobalt (Fe—Co) alloy which is composed to form a body-centered cubic (bcc) structure.

摘要翻译： 根据本发明的磁记录介质包括层叠在基材上的非磁性基材，软磁下层，中间层，记录层和保护层。 软磁下层由下软磁层，磁畴控制层（或非磁性层）和上软磁层构成。 下层和上层软磁性层均由通过将锆（Zr）和钽（Ta）中的至少一种添加到铁 - 钴（Fe-Co）合金中的非晶化材料制成，所述铁 - 钴（Fe-Co）合金被构成以形成体心立方 （bcc）结构。