Recording medium comprising laminated underlayer structures
    52.
    发明授权
    Recording medium comprising laminated underlayer structures 有权
    记录介质包括层压下层结构

    公开(公告)号:US07722967B2

    公开(公告)日:2010-05-25

    申请号:US11192387

    申请日:2005-07-27

    IPC分类号: G11B5/66

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

    摘要: A perpendicular recording medium having an underlayer structure that improves the microstructural properties of the recording layer. A spacer layer is intercalated between the lower and upper hcp metal layers. This results in improvements in microstructure of the upper hcp metal layer and the recording magnetic layer, which in turn results in gains in recording media performance. Further, the thickness of the upper hcp metal layer can be reduced, thereby reducing the distance between the recording layer and the soft underlayer, providing further gains in recording media performance.

    摘要翻译: 具有改善记录层的显微组织性质的底层结构的垂直记录介质。 间隔层插入在下部和上部hcp金属层之间。 这导致上部hcp金属层和记录磁性层的微观结构的改善,这又导致记录介质性能的提高。 此外,可以减小上部hcp金属层的厚度,从而减小记录层和软底层之间的距离,从而进一步提高记录介质的性能。

    GENERATION OF MULTILAYER STRUCTURES IN A SINGLE SPUTTERING MODULE OF A MULTI-STATION MAGNETIC RECORDING MEDIA FABRICATION TOOL
    53.
    发明申请
    GENERATION OF MULTILAYER STRUCTURES IN A SINGLE SPUTTERING MODULE OF A MULTI-STATION MAGNETIC RECORDING MEDIA FABRICATION TOOL 有权
    多站式磁记录介质制造工具单片机中多层结构的生成

    公开(公告)号:US20090205948A1

    公开(公告)日:2009-08-20

    申请号:US12032669

    申请日:2008-02-16

    IPC分类号: C23C14/34

    摘要: Methods of fabricating perpendicular magnetic recording media are disclosed. The multilayer structures of the perpendicular magnetic recording media are fabricated by varying the sputtering conditions (i.e., pressure, sputtering gas, etc) in a single sputtering module so that multiple sputtering modules are not needed to form the multilayer structures. These fabrication methods allow sputtering tools with a limited number of chambers, which were designed for the manufacture of longitudinal media, to be used to efficiently produce perpendicular media architectures which heretofore required a large number of sputtering modules. It is further shown that media structures involving a geometric weak-link architecture are suited for these fabrication techniques.

    摘要翻译: 公开了制造垂直磁记录介质的方法。 通过改变单个溅射模块中的溅射条件(即,压力,溅射气体等)来制造垂直磁记录介质的多层结构,从而不需要多个溅射模块来形成多层结构。 这些制造方法允许具有有限数量的腔室的溅射工具,其被设计用于制造纵向介质,以用于有效地产生迄今为止需要大量溅射模块的垂直介质结构。 进一步表明涉及几何弱链结构的介质结构适用于这些制造技术。

    Positioning of a magnetic head in a magnetic data recording device using a multiple sensor array
    55.
    发明授权
    Positioning of a magnetic head in a magnetic data recording device using a multiple sensor array 失效
    使用多传感器阵列将磁头定位在磁数据记录装置中

    公开(公告)号:US07502193B2

    公开(公告)日:2009-03-10

    申请号:US11508538

    申请日:2006-08-22

    IPC分类号: G11B21/02

    摘要: A system method and apparatus for determining a position error signal (PES) for servo tracking in a data recording system using a data track. The PES is determined using a sensor array that includes a plurality of sensors offset from one another by certain predetermined distances in a direction perpendicular to the track direction. Correlation functions can be determined for pairs of sensors in the sensor array based on the signals read by the sensors. The results of these correlation functions can then be used to determine a PES by using a look up table or computational processor.

    摘要翻译: 一种用于在使用数据轨道的数据记录系统中确定用于伺服跟踪的位置误差信号(PES)的系统方法和装置。 使用包括多个传感器的传感器阵列来确定PES,所述传感器阵列在垂直于轨道方向的方向上彼此偏移了特定的预定距离。 可以基于传感器读取的信号,确定传感器阵列中的传感器对的相关函数。 这些相关函数的结果然后可以用于通过使用查询表或计算处理器来确定PES。

    Method for improving a patterned perpendicular magnetic recording disk with annealing
    58.
    发明授权
    Method for improving a patterned perpendicular magnetic recording disk with annealing 有权
    用于退火的图案化垂直磁记录盘的改进方法

    公开(公告)号:US09147423B2

    公开(公告)日:2015-09-29

    申请号:US13449279

    申请日:2012-04-17

    CPC分类号: G11B5/855 C22C1/02 C22C19/07

    摘要: A method for making a bit-patterned-media magnetic recording disk with discrete magnetic islands includes annealing the data islands after they have been formed by an etching process. A hard mask, such as a layer of silicon nitride or carbon, may be first formed on the recording layer and a patterned resist formed on the hard mask. The resist pattern is then transferred into the hard mask, which is used as the etch mask to etch the recording layer and form the discrete data islands. After the data islands are formed by the etching process, the patterned recording layer is annealed. The annealing may be done in a vacuum, or in an inert gas, like helium or argon, or in a forming gas such as a reducing atmosphere of argon plus hydrogen. The annealing improves the coercivity, the effective saturation magnetization and the thermal stability of the patterned media.

    摘要翻译: 用于制造具有离散磁岛的位图形介质磁记录盘的方法包括在通过蚀刻工艺形成数据岛之后退火数据岛。 可以首先在记录层上形成诸如氮化硅或碳的一层的硬掩模和形成在硬掩模上的图案化抗蚀剂。 然后将抗蚀剂图案转移到硬掩模中,其用作蚀刻掩模以蚀刻记录层并形成离散数据岛。 在通过蚀刻工艺形成数据岛之后,对图案化记录层进行退火。 退火可以在真空中或在诸如氦或氩的惰性气体中进行,或者在形成气体如氩气和氢气的还原气氛中进行。 退火提高了图案化介质的矫顽力,有效饱和磁化强度和热稳定性。

    Patterned perpendicular magnetic recording disk drive and medium with patterned exchange bridge layer below the data islands
    59.
    发明授权
    Patterned perpendicular magnetic recording disk drive and medium with patterned exchange bridge layer below the data islands 有权
    图案化的垂直磁记录磁盘驱动器和介质,在数据岛下方有图案交换桥接层

    公开(公告)号:US08541116B2

    公开(公告)日:2013-09-24

    申请号:US12906909

    申请日:2010-10-18

    IPC分类号: G11B5/66

    摘要: A patterned perpendicular magnetic recording disk with discrete data islands of recording layer (RL) material includes a substrate, a patterned exchange bridge layer of magnetic material between the substrate and the islands, and an optional exchange-coupling control layer (CCL) between the exchange bridge layer and the islands. The exchange bridge layer has patterned pedestals below the islands. The exchange bridge layer controls exchange interactions between the RLs in adjacent islands to compensate the dipolar fields between islands, and the pedestals concentrate the flux from the write head. The disk may include a soft underlayer (SUL) of soft magnetically permeable material on the substrate and a nonmagnetic exchange break layer (EBL) on the SUL between the SUL and the exchange bridge layer. In a thermally-assisted recording (TAR) disk a heat sink layer may be located below the exchange bridge layer and the SUL may be optional.

    摘要翻译: 具有记录层(RL)材料的离散数据岛的图案化垂直磁记录盘包括衬底,在衬底和岛之间的图案化的磁性材料交换桥接层,以及在交换器之间的任选的交换耦合控制层(CCL) 桥梁层和岛屿。 交换桥层在岛屿下方有图案化的基座。 交换桥接层控制相邻岛中的RL之间的交换相互作用以补偿岛之间的偶极场,并且基座集中来自写头的磁通。 盘可以包括在衬底上的软磁性可渗透材料的软底层(SUL)和在SUL和交换桥接层之间的SUL上的非磁性交换断层(EBL)。 在热辅助记录(TAR)盘中,散热层可以位于交换桥接层下方,并且SUL可以是可选的。

    QUANTUM WELL GRAPHENE STRUCTURE FORMED ON A DIELECTRIC LAYER HAVING A FLAT SURFACE
    60.
    发明申请
    QUANTUM WELL GRAPHENE STRUCTURE FORMED ON A DIELECTRIC LAYER HAVING A FLAT SURFACE 有权
    在具有平坦表面的电介质层上形成的量子孔结构

    公开(公告)号:US20120261640A1

    公开(公告)日:2012-10-18

    申请号:US13532679

    申请日:2012-06-25

    IPC分类号: H01L29/06

    摘要: An electronic device employing a graphene layer as a charge carrier layer. The graphene layer is sandwiched between layers that are constructed of a material having a highly ordered crystalline structure and a high dielectric constant. The highly ordered crystalline structure of the layers surrounding the graphene layer has low density of charged defects that can lead to scattering of charge carriers in the graphene layer. The high dielectric constant of the layers surrounding the graphene layer also prevents charge carrier scattering by minimizing interaction between the charge carriers and the changed defects in the surrounding layers. An interracial layer constructed of a thin, non-polar, dielectric material can also be provided between the graphene layer and each of the highly ordered crystalline high dielectric constant layers to minimize charge carrier scattering in the graphene layer through remote interfacial phonons.

    摘要翻译: 一种使用石墨烯层作为电荷载体层的电子器件。 石墨烯层夹在由具有高度有序晶体结构和高介电常数的材料构成的层之间。 围绕石墨烯层的层的高度有序的结晶结构具有低的带电缺陷密度,这可导致石墨烯层中的载流子的散射。 围绕石墨烯层的层的高介电常数也通过最小化电荷载体和周围层中改变的缺陷之间的相互作用来防止电荷载体的散射。 也可以在石墨烯层和每个高阶结晶高介电常数层之间提供由薄的非极性介电材料构成的界面层,以通过远程界面声子最小化石墨烯层中的载流子散射。