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1. 发明授权

US09240204B2 Perpendicular magnetic recording disc 有权
标题翻译：垂直磁记录盘
公开(公告)号：US09240204B2
公开(公告)日：2016-01-19
申请号：US13112323
申请日：2011-05-20
申请人： Teiichiro Umezawa , Takenori Kajiwara , Tokichiro Sato
发明人： Teiichiro Umezawa , Takenori Kajiwara , Tokichiro Sato
IPC分类号： G11B5/66 , C23C16/26
CPC分类号： G11B5/66 , C23C16/26
摘要： A perpendicular magnetic disk is provided. The disk includes, on a base and in the order from bottom, a first granular magnetic layer group including a plurality of magnetic layers each having a granular structure, a non-magnetic layer having Ru or a Ru alloy as a main component, a second granular magnetic layer group including a plurality of magnetic layers each having the granular structure, and an auxiliary recording layer having a CoCrPtRu alloy as a main component. Layers closer to a front surface among the plurality of magnetic layers included in the first granular magnetic layer group having an equal or smaller content of Pt. Layers closer to the front surface among the plurality of magnetic layers included in the second granular magnetic layer group having an equal or smaller content of Pt and having an equal or larger content of an oxide.
摘要翻译：提供垂直磁盘。该盘在基部上并且从底部开始依次包括具有粒状结构的多个磁性层的第一粒状磁性层组，具有Ru或Ru合金作为主要成分的非磁性层，第二包括具有颗粒结构的多个磁性层的粒状磁性层组以及以CoCrPtRu合金为主要成分的辅助记录层。更靠近Pt含量相同或更小的第一粒状磁性层组中包含的多个磁性层中的前表面。在具有等于或更小含量的Pt并且具有相等或更大含量的氧化物的第二粒状磁性层组中包含的多个磁性层中更靠近前表面的层。

2. 发明申请

US20120189872A1 Perpendicular Magnetic Recording Disc 有权
标题翻译：垂直磁记录盘
公开(公告)号：US20120189872A1
公开(公告)日：2012-07-26
申请号：US13112323
申请日：2011-05-20
申请人： Teiichiro Umezawa , Takenori Kajiwara , Tokichiro Sato
发明人： Teiichiro Umezawa , Takenori Kajiwara , Tokichiro Sato
IPC分类号： G11B5/66 , B82Y25/00 , B82Y10/00
CPC分类号： G11B5/66 , C23C16/26
摘要： A perpendicular magnetic disk is provided. The disk includes, on a base and in the order from bottom, a first granular magnetic layer group including a plurality of magnetic layers each having a granular structure, a non-magnetic layer having Ru or a Ru alloy as a main component, a second granular magnetic layer group including a plurality of magnetic layers each having the granular structure, and an auxiliary recording layer having a CoCrPtRu alloy as a main component. Layers closer to a front surface among the plurality of magnetic layers included in the first granular magnetic layer group having an equal or smaller content of Pt. Layers closer to the front surface among the plurality of magnetic layers included in the second granular magnetic layer group having an equal or smaller content of Pt and having an equal or larger content of an oxide.
摘要翻译：提供垂直磁盘。该盘在基部上并且从底部开始依次包括具有粒状结构的多个磁性层的第一粒状磁性层组，具有Ru或Ru合金作为主要成分的非磁性层，第二包括具有颗粒结构的多个磁性层的粒状磁性层组以及以CoCrPtRu合金为主要成分的辅助记录层。更靠近Pt含量相同或更小的第一粒状磁性层组中包含的多个磁性层中的前表面。在具有等于或更小含量的Pt并且具有相等或更大含量的氧化物的第二粒状磁性层组中包含的多个磁性层中更靠近前表面的层。

3. 发明授权

US08057926B2 Perpendicular magnetic recording medium 有权
标题翻译：垂直磁记录介质
公开(公告)号：US08057926B2
公开(公告)日：2011-11-15
申请号：US12666561
申请日：2008-09-26
申请人： Kenji Ayama , Tokichiro Sato , Teiichiro Umezawa , Masafumi Ishiyama , Junichi Horikawa
发明人： Kenji Ayama , Tokichiro Sato , Teiichiro Umezawa , Masafumi Ishiyama , Junichi Horikawa
IPC分类号： G11B5/66
CPC分类号： G11B5/66 , G11B5/855
摘要： The present invention provides a perpendicular magnetic recording medium that can reduce noise by further size reduction and isolation of magnetic grains in a magnetic recording layer and can increase the recording density by improvement of the SNR. A typical configuration of a perpendicular magnetic recording medium according to the present invention is a perpendicular magnetic recording medium having a magnetic recording layer with a granular structure in which non-magnetic grain boundary portions are formed between magnetic grains that have grown continuously in a columnar shape, wherein the grain boundary portions contain a plurality of kinds of oxides.
摘要翻译：本发明提供一种能够通过磁记录层中的磁性颗粒的进一步的尺寸减小和隔离来降低噪声的垂直磁记录介质，并且可以通过提高SNR来提高记录密度。根据本发明的垂直磁记录介质的典型结构是具有具有颗粒结构的磁记录层的垂直磁记录介质，其中在磁性颗粒之间形成非磁性晶界部分，该磁性颗粒连续生长成柱状其中，晶界部分含有多种氧化物。

4. 发明申请

US20110111262A1 METHOD FOR MANUFACTURING PERPENDICULAR MAGNETIC RECORDING MEDIUM AND PERPENDICULAR MAGNETIC RECORDING MEDIUM 有权
标题翻译：制造全能磁记录介质和全磁记录介质的方法
公开(公告)号：US20110111262A1
公开(公告)日：2011-05-12
申请号：US12934975
申请日：2009-03-25
申请人： Teiichiro Umezawa , Masafumi Ishiyama , Tokichiro Sato , Kenji Ayama , Takahiro Onoue , Junichi Horikawa
发明人： Teiichiro Umezawa , Masafumi Ishiyama , Tokichiro Sato , Kenji Ayama , Takahiro Onoue , Junichi Horikawa
IPC分类号： G11B5/66 , B05D5/12 , G11B5/667 , G11B5/72 , G11B5/85 , G11B5/851
CPC分类号： G11B5/65 , G11B5/84
摘要： An object of the present invention is to provide a method of manufacturing a perpendicular magnetic recording medium (100) in which both of a coercive force Hc and reliability can be achieved at a higher level even with heating at the time of forming a medium protective layer (126) and to provide the perpendicular magnetic recording medium (100). Thus, in a typical structure of the present invention, in the method of manufacturing the perpendicular magnetic recording medium (100) including at least a magnetic recording layer (122b), which is a ferromagnetic layer of a granular structure in which a non-magnetic grain boundary part is formed between crystal grains each grown in a columnar shape, and a medium protective layer (126) with carbon hydride as a main component in this order on a disk base (110), the method includes a magnetic recording layer forming step of forming the magnetic recording layer (122b) so that the grain boundary part contains oxides of a plurality of types and a medium protective layer forming step of forming the medium protective layer (126) in a state where the disk base (110) having the magnetic recording layer (122b) formed thereon is heated at 160 to 200 degrees Celsius.
摘要翻译：本发明的目的是提供一种制造垂直磁记录介质（100）的方法，其中即使在形成介质保护层时加热也可以在更高的水平上实现矫顽力Hc和可靠性（126）并提供垂直磁记录介质（100）。因此，在本发明的典型结构中，在制造至少包括磁记录层（122b）的垂直磁记录介质（100）的制造方法中，所述磁记录层是粒状结构的铁磁层，其中非磁性在圆盘基体（110）上依次形成以圆柱状生长的晶粒和碳氢化合物作为主要成分的介质保护层（126）之间的晶界部分，该方法包括磁记录层形成步骤形成磁记录层（122b），使得晶界部分包含多种类型的氧化物和形成介质保护层（126）的介质保护层形成步骤，所述介质保护层形成步骤处于具有在其上形成的磁记录层（122b）在160至200摄氏度下被加热。

5. 发明授权

US08142916B2 Magnetic recording medium 有权
标题翻译：磁记录介质
公开(公告)号：US08142916B2
公开(公告)日：2012-03-27
申请号：US12594043
申请日：2008-03-28
申请人： Teiichiro Umezawa , Masafumi Ishiyama , Kenji Ayama , Tokichiro Sato
发明人： Teiichiro Umezawa , Masafumi Ishiyama , Kenji Ayama , Tokichiro Sato
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/66
摘要： Provided is a magnetic recording medium which maintains high S/N ratio and coercive force (Hc) and has high recording density, even with fine magnetic particles, by further improving crystal orientation of a magnetic recording layer. The magnetic recording medium is provided with an orientation control layer (16), a nonmagnetic under layer (18), and a magnetic recording layer (22) on a substrate. The orientation control layer (16) has an fcc structure and a (111) plane parallel to the substrate. The under layer (18) has an hcp structure and a (0001) plane parallel to the substrate. An atomic distance of the (111) plane of the orientation control layer (16) is −0.2 Å to +0.15 Å to a lattice spacing of the under layer (18).
摘要翻译：提供了通过进一步改善磁记录层的晶体取向，即使使用细小的磁性颗粒，仍然保持高S / N比和矫顽力（Hc）并且具有高记录密度的磁记录介质。磁记录介质在基板上设置有取向控制层（16），非磁性底层（18）和磁记录层（22）。取向控制层（16）具有fcc结构和平行于基板的（111）平面。底层（18）具有hcp结构和平行于衬底的（0001）平面。取向控制层（16）的（111）面的原子距离相对于下层（18）的晶格间距为-0.2到+0.15。

6. 发明申请

US20100112379A1 PERPENDICULAR MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING THE SAME 有权
标题翻译：全能磁记录介质及其制造方法
公开(公告)号：US20100112379A1
公开(公告)日：2010-05-06
申请号：US12594092
申请日：2008-03-28
申请人： Teiichiro Umezawa , Masafumi Ishiyama , Kenji Ayama , Tokichiro Sato
发明人： Teiichiro Umezawa , Masafumi Ishiyama , Kenji Ayama , Tokichiro Sato
IPC分类号： G11B5/706 , G11B5/84
CPC分类号： G11B5/72 , G11B5/66 , G11B5/667
摘要： A vertical magnetic recording disc (100) includes a base (10), a magnetic recording layer (22), and a medium protection layer (26). The magnetic recording layer (22) is a ferromagnetic layer having a granular structure where a granular portion is formed. The medium protection layer (26) contains nitrogen (N) atoms and carbon (C) atoms with a number ratio (N/C) in a range from 0.050 to 0.150. In a Raman spectrum obtained by exciting the medium protection layer (26) by argon ion laser light of wavelength 514.5 nm, from which a fluorescence is removed, the peak ratio Dh/Gh is in a range from 0.70 to 0.95, when a D peak Dh appearing in the vicinity of 1350 cm−1 is separated from G peak Gh appearing in the vicinity of 1520 cm−1 by the Gauss function.
摘要翻译：垂直磁记录盘（100）包括基座（10），磁记录层（22）和介质保护层（26）。磁记录层（22）是形成粒状部的粒状结构的铁磁层。介质保护层（26）含有氮（N）原子和碳（C）原子，其数量比（N / C）在0.050至0.150的范围内。在通过从其去除荧光的波长514.5nm的氩离子激光激发介质保护层（26）而获得的拉曼光谱中，峰值比Dh / Gh在0.70至0.95的范围内，当D峰出现在1350cm-1附近的Dh通过高斯函数与在1520cm -1附近出现的G峰Gh分离。

7. 发明授权

US08795857B2 Perpendicular magnetic recording medium and manufacturing method of the same 有权
标题翻译：垂直磁记录介质及其制造方法相同
公开(公告)号：US08795857B2
公开(公告)日：2014-08-05
申请号：US12665271
申请日：2008-09-24
申请人： Kenji Ayama , Tokichiro Sato , Teiichiro Umezawa , Masafumi Ishiyama
发明人： Kenji Ayama , Tokichiro Sato , Teiichiro Umezawa , Masafumi Ishiyama
IPC分类号： G11B5/66
CPC分类号： G11B5/667 , G11B5/66 , G11B5/72 , G11B5/851
摘要： A perpendicular magnetic recording medium of the invention is characterized by having, on a disk substrate 110, a soft magnetic layer 14, a magnetic recording layer 22, a continuous layer 24 magnetically continuous in the in-plane direction of the substrate, a blocking layer 25 for blocking shock imposed on the continuous layer, and a medium protective layer 28 containing carbon formed on the blocking layer.
摘要翻译：本发明的垂直磁记录介质的特征在于，在盘基板110上具有在基板的面内方向上磁连续的软磁层14，磁记录层22，连续层24，阻挡层 25，用于阻挡施加在连续层上的冲击，以及包含形成在阻挡层上的碳的介质保护层28。

8. 发明授权

US08309239B2 Perpendicular magnetic recording medium and method of manufacturing the same 有权
标题翻译：垂直磁记录介质及其制造方法
公开(公告)号：US08309239B2
公开(公告)日：2012-11-13
申请号：US12594092
申请日：2008-03-28
申请人： Teiichiro Umezawa , Masafumi Ishiyama , Kenji Ayama , Tokichiro Sato
发明人： Teiichiro Umezawa , Masafumi Ishiyama , Kenji Ayama , Tokichiro Sato
IPC分类号： G11B5/66
CPC分类号： G11B5/72 , G11B5/66 , G11B5/667
摘要： A vertical magnetic recording disc (100) includes a base (10), a magnetic recording layer (22), and a medium protection layer (26). The magnetic recording layer (22) is a ferromagnetic layer having a granular structure where a granular portion is formed. The medium protection layer (26) contains nitrogen (N) atoms and carbon (C) atoms with a number ratio (N/C) in a range from 0.050 to 0.150. In a Raman spectrum obtained by exciting the medium protection layer (26) by argon ion laser light of wavelength 514.5 nm, from which a fluorescence is removed, the peak ratio Dh/Gh is in a range from 0.70 to 0.95, when a D peak Dh appearing in the vicinity of 1350 cm−1 is separated from G peak Gh appearing in the vicinity of 1520 cm−1 by the Gauss function.
摘要翻译：垂直磁记录盘（100）包括基座（10），磁记录层（22）和介质保护层（26）。磁记录层（22）是形成粒状部的粒状结构的铁磁层。介质保护层（26）含有氮（N）原子和碳（C）原子，其数量比（N / C）在0.050至0.150的范围内。在通过从其去除荧光的波长514.5nm的氩离子激光激发介质保护层（26）而获得的拉曼光谱中，峰值比Dh / Gh在0.70至0.95的范围内，当D峰出现在1350cm-1附近的Dh通过高斯函数与在1520cm -1附近出现的G峰Gh分离。

9. 发明申请

US20100119878A1 MAGNETIC RECORDING MEDIUM 有权
标题翻译：磁记录介质
公开(公告)号：US20100119878A1
公开(公告)日：2010-05-13
申请号：US12594043
申请日：2008-03-28
申请人： Teiichiro Umezawa , Masafumi Ishiyama , Kenji Ayama , Tokichiro Sato
发明人： Teiichiro Umezawa , Masafumi Ishiyama , Kenji Ayama , Tokichiro Sato
IPC分类号： G11B5/706
CPC分类号： G11B5/7325 , G11B5/66
摘要： Provided is a magnetic recording medium which maintains high S/N ratio and coercive force (Hc) and has high recording density, even with fine magnetic particles, by further improving crystal orientation of a magnetic recording layer. The magnetic recording medium is provided with an orientation control layer (16), a nonmagnetic under layer (18), and a magnetic recording layer (22) on a substrate. The orientation control layer (16) has an fcc structure and a (111) plane parallel to the substrate. The under layer (18) has an hcp structure and a (0001) plane parallel to the substrate. An atomic distance of the (111) plane of the orientation control layer (16) is −0.2 Å to +0.15 Å to a lattice spacing of the under layer (18).
摘要翻译：提供了通过进一步改善磁记录层的晶体取向，即使使用细小的磁性颗粒，仍然保持高S / N比和矫顽力（Hc）并且具有高记录密度的磁记录介质。磁记录介质在基板上设置有取向控制层（16），非磁性底层（18）和磁记录层（22）。取向控制层（16）具有fcc结构和平行于基板的（111）平面。底层（18）具有hcp结构和平行于衬底的（0001）平面。取向控制层（16）的（111）面的原子距离相对于下层（18）的晶格间距为-0.2到+0.15。

10. 发明授权

US08623528B2 Method of manufacturing perpendicular magnetic recording medium and perpendicular magnetic recording medium 有权
标题翻译：制造垂直磁记录介质和垂直磁记录介质的方法
公开(公告)号：US08623528B2
公开(公告)日：2014-01-07
申请号：US12934975
申请日：2009-03-25
申请人： Teiichiro Umezawa , Masafumi Ishiyama , Tokichiro Sato , Kenji Ayama , Takahiro Onoue , Junichi Horikawa
发明人： Teiichiro Umezawa , Masafumi Ishiyama , Tokichiro Sato , Kenji Ayama , Takahiro Onoue , Junichi Horikawa
IPC分类号： G11B5/66
CPC分类号： G11B5/65 , G11B5/84
摘要： An object of the present invention is to provide a method of manufacturing a perpendicular magnetic recording medium (100) in which both of a coercive force Hc and reliability can be achieved at a higher level even with heating at the time of forming a medium protective layer (126) and to provide the perpendicular magnetic recording medium (100). Thus, in a typical structure of the present invention, in the method of manufacturing the perpendicular magnetic recording medium (100) including at least a magnetic recording layer (122b), which is a ferromagnetic layer of a granular structure in which a non-magnetic grain boundary part is formed between crystal grains each grown in a columnar shape, and a medium protective layer (126) with carbon hydride as a main component in this order on a disk base (110), the method includes a magnetic recording layer forming step of forming the magnetic recording layer (122b) so that the grain boundary part contains oxides of a plurality of types and a medium protective layer forming step of forming the medium protective layer (126) in a state where the disk base (110) having the magnetic recording layer (122b) formed thereon is heated at 160 to 200 degrees Celsius.
摘要翻译：本发明的目的是提供一种制造垂直磁记录介质（100）的方法，其中即使在形成介质保护层时加热也可以在更高的水平上实现矫顽力Hc和可靠性（126）并提供垂直磁记录介质（100）。因此，在本发明的典型结构中，在制造至少包括磁记录层（122b）的垂直磁记录介质（100）的制造方法中，所述磁记录层是粒状结构的铁磁层，其中非磁性在圆盘基体（110）上依次形成以圆柱状生长的晶粒和碳氢化合物作为主要成分的介质保护层（126）之间的晶界部分，该方法包括磁记录层形成步骤形成磁记录层（122b），使得晶界部分包含多种类型的氧化物和形成介质保护层（126）的介质保护层形成步骤，所述介质保护层形成步骤处于具有在其上形成的磁记录层（122b）在160至200摄氏度下被加热。

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