-
1.发明授权
公开(公告)号：US6150015A
公开(公告)日：2000-11-21
申请号：US984753
申请日：1997-12-04
申请人： Gerardo Bertero , Charles Changqing Chen , Tu Chen , Tsutomu Yamashita , Makoto Imakawa , Michinobu Suekane
发明人： Gerardo Bertero , Charles Changqing Chen , Tu Chen , Tsutomu Yamashita , Makoto Imakawa , Michinobu Suekane
CPC分类号： G11B5/7325 , G11B5/8404 , Y10S428/90 , Y10T428/12854 , Y10T428/26 , Y10T428/265
摘要： In this invention, an ultra thin layer of CoCr alloy nucleation layer is sputtered at an extremely low deposition rate above a predominantly (200) oriented Cr film followed by a CoCrPt based alloy sputtered film at higher rates and moderate temperatures. This structure creates a media which has very high Hc, and excellent PW50, low noise and excellent low TNLD values. By using this technique, the CoCrPt magnetic film achieves excellent in-plane crystallographic orientation, and high Hc is achieved with minimal amount of Pt addition to the magnetic film. The method allows very fine grain structure of cobalt to be formed which contributes to good signal to noise ratio. A fine grain structure combined with chromium segregation between the grains improve the signal to noise ratio even more. A high degree of in-plane c-axis orientation is achieved in the cobalt layer which provides very high hysteresis loop squareness which helps to improve the OW and TNLD. The perfection of the grains is very high so that high anisotropy is obtained in the magnetic layer, resulting in high Hc without the necessity of addition of high level of Pt. The high degree of crystalline perfection also contributes to low TNLD.
-
公开(公告)号：US20070039922A1
公开(公告)日：2007-02-22
申请号：US11588698
申请日：2006-10-27
申请人： David Wachenschwanz , Gerardo Bertero , David Treves , Andrew Homola , James Chao , Christopher Bajorek
发明人： David Wachenschwanz , Gerardo Bertero , David Treves , Andrew Homola , James Chao , Christopher Bajorek
IPC分类号： B44C1/22
CPC分类号： G11B5/82 , B29C43/003 , B29C2043/025 , B82Y10/00 , G11B5/012 , G11B5/667 , G11B5/743 , G11B5/8404 , G11B5/855 , G11B5/858 , G11B2005/0029
摘要： A method of forming a discrete track recording pattern on a soft magnetic underlayer of a perpendicular magnetic recording disk. In one embodiment, the soft magnetic underlayer is continuous throughout the discrete track recording pattern.
-
公开(公告)号：US07179549B2
公开(公告)日：2007-02-20
申请号：US10761820
申请日：2004-01-21
CPC分类号： G11B5/7325 , G11B5/66
摘要： A magnetic recording medium constructed in accordance with the invention comprises a substrate, first, second and third underlayers formed over the substrate, and a magnetic data recording layer formed over the underlayers. The underlayers typically have a bcc crystal structure, and comprise Cr or Cr alloys. The magnetic data recording layer has a hcp crystal structure and comprises a Co alloy. The second underlayer typically comprises a material such as B, which tends to reduce the crystal size of the second underlayer and the layers deposited thereon, and also to increase crystal spacing.
摘要翻译： 根据本发明构造的磁记录介质包括在衬底上形成的衬底，第一，第二和第三底层，以及形成在衬底上的磁数据记录层。 底层通常具有bcc晶体结构，并且包括Cr或Cr合金。 磁数据记录层具有hcp晶体结构并且包括Co合金。 第二底层通常包括诸如B的材料，其倾向于降低第二底层和沉积在其上的层的晶体尺寸，并且还增加晶体间距。
-
公开(公告)号：US20050129984A1
公开(公告)日：2005-06-16
申请号：US11048153
申请日：2005-02-01
CPC分类号： G11B5/66 , Y10T428/12465 , Y10T428/12646 , Y10T428/12861 , Y10T428/12868 , Y10T428/12931 , Y10T428/13 , Y10T428/24942 , Y10T428/31
摘要： A magnetic recording medium includes a substrate, an underlayer, a lower magnetic layer formed on the underlayer, an intermediate layer, and an upper magnetic layer formed on the intermediate layer. The intermediate layer is typically Ru, and promotes anti ferromagnetic coupling between the upper and lower magnetic layers. The upper and lower magnetic layers are typically Co alloys. The lower magnetic layer has a high saturation magnetization Ms to promote high exchange coupling between the upper and lower magnetic layers. The dynamic coercivity of the lower magnetic layer is lower than the exchange field to ensure rapid switching of the lower magnetic layer.
摘要翻译： 磁记录介质包括基底，底层，形成在底层上的下磁性层，中间层和形成在中间层上的上磁性层。 中间层通常为Ru，并且促进上和下磁性层之间的反铁磁耦合。 上，下磁性层通常为Co合金。 下部磁性层具有高的饱和磁化强度Ms，以促进上部和下部磁性层之间的高交换耦合。 下磁层的动态矫顽力低于交换场，以确保下磁层的快速切换。
-
公开(公告)号：US06482505B1
公开(公告)日：2002-11-19
申请号：US09569345
申请日：2000-05-11
申请人： Gerardo Bertero , Javier Wong , Tu Chen
发明人： Gerardo Bertero , Javier Wong , Tu Chen
IPC分类号： G11B582
CPC分类号： G11B5/66 , Y10T428/12472 , Y10T428/12854 , Y10T428/12944 , Y10T428/24942
摘要： A method for improving corrosion resistance while maximizing magnetic performance of a magnetic disk employed in data storage applications. The invention includes providing a substrate and forming a first layer above the substrate, the first layer having a first degree of abrasion resistance. The invention includes forming a second layer such as a Ni-containing layer above the first layer, the Ni-containing layer having a second degree of abrasion resistance lower than the first degree of abrasion resistance. The invention further includes forming grooves in the Ni-containing layer.
摘要翻译： 一种提高耐腐蚀性的方法，同时最大化数据存储应用中使用的磁盘的磁性能。 本发明包括提供衬底并在衬底上形成第一层，第一层具有第一耐磨性。 本发明包括在第一层上方形成诸如含Ni层的第二层，具有低于第一耐磨性的第二耐磨性的含Ni层。 本发明还包括在含Ni层中形成沟槽。
-
公开(公告)号：US20070041306A1
公开(公告)日：2007-02-22
申请号：US11588699
申请日：2006-10-27
申请人： David Wachenschwanz , Gerardo Bertero , David Treves , Andrew Homola , James Chao , Christopher Bajorek
发明人： David Wachenschwanz , Gerardo Bertero , David Treves , Andrew Homola , James Chao , Christopher Bajorek
IPC分类号： G11B3/70
CPC分类号： G11B5/82 , B29C43/003 , B29C2043/025 , B82Y10/00 , G11B5/012 , G11B5/667 , G11B5/743 , G11B5/8404 , G11B5/855 , G11B5/858 , G11B2005/0029
摘要： A method of forming a discrete track recording pattern on a soft magnetic underlayer of a perpendicular magnetic recording disk. In one embodiment, the soft magnetic underlayer is continuous throughout the discrete track recording pattern.
摘要翻译： 在垂直磁记录盘的软磁性底层上形成离散轨道记录图案的方法。 在一个实施例中，软磁性底层在整个离散轨道记录图案中是连续的。
-
公开(公告)号：US06893748B2
公开(公告)日：2005-05-17
申请号：US10442756
申请日：2003-05-20
CPC分类号： G11B5/667 , G11B5/66 , Y10S428/90 , Y10T428/24942 , Y10T428/259 , Y10T428/265
摘要： A perpendicular magnetic recording disk having a soft magnetic film disposed between a substrate and a magnetic recording layer. The soft magnetic film includes a soft magnetic underlayer and one or more layer groups having a spacer layer and a soft magnetic layer disposed above the spacer layer in each layer group. The spacer layers induce anti-ferromagnetic coupling between the surrounding ferromagnetic layers. The spacer layers may be comprised of ruthenium. The soft magnetic layers may have a granular decoupled structured through the use of a segregate.
摘要翻译： 具有设置在基板和磁记录层之间的软磁性膜的垂直磁记录盘。 软磁性膜包括软磁性底层和在各层组中具有间隔层和位于间隔层上方的软磁性层的一个或多个层组。 间隔层在周围的铁磁层之间引起反铁磁耦合。 间隔层可以由钌组成。 软磁性层可以具有通过使用分离体的结构的颗粒分离。
-
公开(公告)号：US07070870B2
公开(公告)日：2006-07-04
申请号：US11048153
申请日：2005-02-01
IPC分类号： G11B5/66
CPC分类号： G11B5/66 , Y10T428/12465 , Y10T428/12646 , Y10T428/12861 , Y10T428/12868 , Y10T428/12931 , Y10T428/13 , Y10T428/24942 , Y10T428/31
摘要： A magnetic recording medium includes a substrate, an underlayer, a lower magnetic layer formed on the underlayer, an intermediate layer, and an upper magnetic layer formed on the intermediate layer. The intermediate layer is typically Ru, and promotes anti ferromagnetic coupling between the upper and lower magnetic layers. The upper and lower magnetic layers are typically Co alloys. The lower magnetic layer has a high saturation magnetization Ms to promote high exchange coupling between the upper and lower magnetic layers. The dynamic coercivity of the lower magnetic layer is lower than the exchange field to ensure rapid switching of the lower magnetic layer.
摘要翻译： 磁记录介质包括基底，底层，形成在底层上的下磁性层，中间层和形成在中间层上的上磁性层。 中间层通常为Ru，并且促进上和下磁性层之间的反铁磁耦合。 上，下磁性层通常为Co合金。 下部磁性层具有高的饱和磁化强度Ms，以促进上部和下部磁性层之间的高交换耦合。 下磁层的动态矫顽力低于交换场，以确保下磁层的快速切换。
-
公开(公告)号：US20050036223A1
公开(公告)日：2005-02-17
申请号：US10306182
申请日：2002-11-27
申请人： David Wachenschwanz , Gerardo Bertero , David Treves , Andrew Homola , James Chao , Christopher Bajorek
发明人： David Wachenschwanz , Gerardo Bertero , David Treves , Andrew Homola , James Chao , Christopher Bajorek
IPC分类号： G11B5/65 , G11B5/667 , G11B5/73 , G11B5/738 , G11B5/82 , G11B5/84 , G11B5/855 , G11B5/858 , B44C1/22 , G11B5/09 , G11B5/72
CPC分类号： G11B5/8404 , G11B5/667 , G11B5/855 , G11B5/858 , Y10T29/49021 , Y10T29/49025
摘要： A method of forming a discrete track recording pattern in a magnetic recording disk. In one embodiment, the discrete track recording pattern may be formed in a NiP layer continuous throughout the discrete track recording pattern. Alternatively, the discrete track recording pattern may be formed in a substrate.
-
公开(公告)号：US20050008902A1
公开(公告)日：2005-01-13
申请号：US10442756
申请日：2003-05-20
CPC分类号： G11B5/667 , G11B5/66 , Y10S428/90 , Y10T428/24942 , Y10T428/259 , Y10T428/265
摘要： A perpendicular magnetic recording disk having a soft magnetic film disposed between a substrate and a magnetic recording layer. The soft magnetic film includes a soft magnetic underlayer and one or more layer groups having a spacer layer and a soft magnetic layer disposed above the spacer layer in each layer group. The spacer layers induce anti-ferromagnetic coupling between the surrounding ferromagnetic layers. The spacer layers may be comprised of ruthenium. The soft magnetic layers may have a granular decoupled structured through the use of a segregate.
摘要翻译： 具有设置在基板和磁记录层之间的软磁性膜的垂直磁记录盘。 软磁性膜包括软磁性底层和在各层组中具有间隔层和位于间隔层上方的软磁性层的一个或多个层组。 间隔层在周围的铁磁层之间引起反铁磁耦合。 间隔层可以由钌组成。 软磁性层可以具有通过使用分离体结构的颗粒分离。
-
-
-
-
-
-
-
-
-
搜索结果
16 条记录 (耗时 0.011 秒)
