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公开(公告)号：US08142916B2
公开(公告)日：2012-03-27
申请号：US12594043
申请日：2008-03-28
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。
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2.发明申请公开(公告)号：US20100112379A1
公开(公告)日：2010-05-06
申请号：US12594092
申请日：2008-03-28
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。
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3.发明申请MAGNETIC RECORDING MEDIUM MANUFACTURING METHOD AND LAMINATE MANUFACTURING METHOD 有权磁记录介质制造方法和层压制造方法公开(公告)号：US20100028560A1
公开(公告)日：2010-02-04
申请号：US12443142
申请日：2007-09-26
申请人： Kenji Ayama
发明人： Kenji Ayama
摘要： [Problems] To have a thin film suitably function even when the thickness of the thin film is reduced.[Means for Solving Problems] Provided is a method for manufacturing a magnetic recording medium by forming a thin film on a substrate (12). The method is provided with a thin film forming step of forming the thin film by using a substance brought into the plasma state as a material. In the thin film forming step, the thin film is formed by using a material substance gathering means (30) for gathering the substance brought into the plasma state to the periphery of the substrate. The material substance gathering means (30) gathers the substance brought into the plasma state, for instance, to the periphery of the substrate (12) by generating a magnetic field at the periphery of the substrate (12).
摘要翻译： [问题]即使当薄膜的厚度减小时，也能适当地发挥薄膜的功能。 解决问题的手段提供一种通过在基板（12）上形成薄膜来制造磁记录介质的方法。 该方法具有通过使用进入等离子体状态的物质作为材料来形成薄膜的薄膜形成步骤。 在薄膜形成步骤中，通过使用用于将进入等离子体状态的物质收集到基板的周边的材料物质聚集装置（30）形成薄膜。 材料收集装置（30）通过在基板（12）的周边产生磁场，将被引入等离子体状态的物质例如聚集到基板（12）的周围。
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4.发明申请公开(公告)号：US20080268294A1
公开(公告)日：2008-10-30
申请号：US12141593
申请日：2008-06-18
申请人： Masafumi Ishiyama , Kenji Ayama
发明人： Masafumi Ishiyama , Kenji Ayama
CPC分类号： G11B5/72 , C23C14/3414 , C23C16/26 , G11B5/8408
摘要： A protection layer containing carbon as a major component is deposited by plasma CVD. The protection layer has film quality such that, when a spectrum is obtained by excluding photoluminescence from a Raman spectrum in a wavenumber band from 900 cm−1 to 1800 cm−1 obtained by exciting the protection layer with an argon ion laser beam having a wavelength of 514.5 nm and the spectrum is subjected to waveform separation by the Gaussian function to split a D peak appearing around 1350 cm−1 and a G peak appearing around 1520 cm−1, the ratio Dw/Gw between a half width Dw of the D peak and a half width Gw of the G peak exceeds 0 and is not greater than 2.7.
摘要翻译： 通过等离子体CVD沉积包含碳作为主要成分的保护层。 保护层具有这样的膜质量，使得当通过从获得的900cm -1至1800cm -1的波数谱带中的拉曼光谱中排除光致发光而获得光谱时 通过用波长为514.5nm的氩离子激光束激发保护层，并且通过高斯函数对光谱进行波形分离，以分裂出现在1350cm -1附近的D峰和G 出现在1520cm -1附近的峰值，D峰的半值宽度Dw与G峰值的半值宽度Gw之间的比率Dw / Gw超过0并且不大于2.7。
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公开(公告)号：US06670055B2
公开(公告)日：2003-12-30
申请号：US09925573
申请日：2001-08-09
IPC分类号： G11B566
CPC分类号： G11B5/851 , G11B5/66 , Y10S428/90 , Y10T428/12465 , Y10T428/12847
摘要： A magnetic recording medium that is high coersive force, hard to receive influence of thermal fluctuation, and brings about a considerable improvement of S/N ratio, and in which at least an underlayer and a magnetic layer are sequentially laminated on a substrate, wherein a pre-coat layer is interposed between said underlayer and said substrate and said pre-coat layer is constructed by sequentially laminating a lower layer containing Ni and P and an upper layer made of a Cr alloy.
摘要翻译： 一种磁性记录介质，其具有高的强力，难以接受热波动的影响，并且导致S / N比的显着提高，并且其中至少底层和磁性层依次层压在基板上，其中 预涂层介于所述底层和所述基材之间，并且所述预涂层通过依次层压含有Ni和P的下层和由Cr合金制成的上层来构造。
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6.发明授权公开(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
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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公开(公告)号：US20100215992A1
公开(公告)日：2010-08-26
申请号：US12709845
申请日：2010-02-22
IPC分类号： G11B5/706
CPC分类号： G11B5/7325 , G11B5/65
摘要： A magnetic recording medium used for perpendicular magnetic recording, the magnetic recording medium comprising: a substrate having a first surface and a second surface opposite to the first surface; a magnetic recording medium constituent layer formed on the first surface of the substrate, the magnetic recording medium constituent layer including at least a magnetic recording layer; a non-magnetic metal film formed on the second surface of the substrate; and a carbon-based protective film formed on the non-magnetic metal film.
摘要翻译： 一种用于垂直磁记录的磁记录介质，所述磁记录介质包括：具有第一表面和与所述第一表面相对的第二表面的基底; 形成在所述基板的第一表面上的磁记录介质构成层，所述磁记录介质构成层至少包括磁记录层; 形成在所述基板的第二表面上的非磁性金属膜; 以及形成在非磁性金属膜上的碳类保护膜。
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公开(公告)号：US20100209740A1
公开(公告)日：2010-08-19
申请号：US12666561
申请日：2008-09-26
IPC分类号： G11B5/706
摘要： [Object] 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.[Means for Solution] A typical configuration of a perpendicular magnetic recording medium according to the present invention is a perpendicular magnetic recording medium 100 having a magnetic recording layer 122 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： 本发明提供一种垂直磁记录介质，其可以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，并且可以通过提高SNR来提高记录密度。 [解决方案]根据本发明的垂直磁记录介质的典型配置是具有具有粒状结构的磁记录层122的垂直磁记录介质100，其中在磁性颗粒之间形成非磁性晶界部分， 连续生长成柱状，其中晶界部分含有多种氧化物。
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9.发明申请公开(公告)号：US20100196740A1
公开(公告)日：2010-08-05
申请号：US12665271
申请日：2008-09-24
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。
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10.发明授权公开(公告)号：US08795857B2
公开(公告)日：2014-08-05
申请号：US12665271
申请日：2008-09-24
IPC分类号： G11B5/66
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。
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