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公开(公告)号：US20110037464A1
公开(公告)日：2011-02-17
申请号：US12539437
申请日：2009-08-11
IPC分类号： G01R33/02
CPC分类号： G01R33/09 , G01R33/095 , H01L43/065 , H01L43/08
摘要： A magnetic field sensor employing a graphene sense layer, wherein the Lorentz force acting on charge carriers traveling through the sense layer causes a change in path of charge carriers traveling through the graphene layer. This change in path can be detected indicating the presence of a magnetic field. The sensor includes one or more gate electrodes that are separated from the graphene layer by a non-magnetic, electrically insulating material. The application of a gate voltage to the gate electrode alters the electrical resistance of the graphene layer and can be used to control the sensitivity and speed of the sensor.
摘要翻译： 采用石墨烯感应层的磁场传感器，其中作用在穿过感测层的电荷载流子上的洛伦兹力导致穿过石墨烯层的电荷载流子的路径变化。 可以检测到路径的这种变化，指示存在磁场。 传感器包括一个或多个通过非磁性的电绝缘材料与石墨烯层分离的栅电极。 栅极电压施加到栅极电极改变了石墨烯层的电阻，并且可以用于控制传感器的灵敏度和速度。
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2.发明授权Magnetic field sensor with graphene sense layer and ferromagnetic biasing layer below the sense layer 有权磁场传感器具有石墨烯感应层和感应层下方的铁磁偏置层公开(公告)号：US08189302B2
公开(公告)日：2012-05-29
申请号：US12880071
申请日：2010-09-11
IPC分类号： G11B5/33
CPC分类号： G11B5/3903 , G01R33/095 , G11B5/3993 , H01F10/123
摘要： A graphene magnetic field sensor has a ferromagnetic biasing layer located beneath and in close proximity to the graphene sense layer. The sensor includes a suitable substrate, the ferromagnetic biasing layer, the graphene sense layer, and an electrically insulating underlayer between the ferromagnetic biasing layer and the graphene sense layer. The underlayer may be a hexagonal boron-nitride (h-BN) layer, and the sensor may include a seed layer to facilitate the growth of the h-BN underlayer. The ferromagnetic biasing layer has perpendicular magnetic anisotropy with its magnetic moment oriented substantially perpendicular to the plane of the layer. The graphene magnetic field sensor based on the extraordinary magnetoresistance (EMR) effect may function as the magnetoresistive read head in a magnetic recording disk drive.
摘要翻译： 石墨烯磁场传感器具有位于石墨烯感测层下方并且非常接近石墨烯感测层的铁磁偏置层。 传感器包括合适的衬底，铁磁偏置层，石墨烯感测层以及铁磁偏置层和石墨烯感应层之间的电绝缘底层。 底层可以是六方氮化硼（h-BN）层，并且传感器可以包括种子层以促进h-BN底层的生长。 铁磁偏置层具有垂直的磁各向异性，其磁矩基本上垂直于层的平面定向。 基于异常磁阻（EMR）效应的石墨烯磁场传感器可以用作磁记录盘驱动器中的磁阻读取头。
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3.发明申请MAGNETIC FIELD SENSOR WITH GRAPHENE SENSE LAYER AND FERROMAGNETIC BIASING LAYER BELOW THE SENSE LAYER 有权磁感应传感器，具有感光层和感光层下面的感光层公开(公告)号：US20120063033A1
公开(公告)日：2012-03-15
申请号：US12880071
申请日：2010-09-11
CPC分类号： G11B5/3903 , G01R33/095 , G11B5/3993 , H01F10/123
摘要： A graphene magnetic field sensor has a ferromagnetic biasing layer located beneath and in close proximity to the graphene sense layer. The sensor includes a suitable substrate, the ferromagnetic biasing layer, the graphene sense layer, and an electrically insulating underlayer between the ferromagnetic biasing layer and the graphene sense layer. The underlayer may be a hexagonal boron-nitride (h-BN) layer, and the sensor may include a seed layer to facilitate the growth of the h-BN underlayer. The ferromagnetic biasing layer has perpendicular magnetic anisotropy with its magnetic moment oriented substantially perpendicular to the plane of the layer. The graphene magnetic field sensor based on the extraordinary magnetoresistance (EMR) effect may function as the magnetoresistive read head in a magnetic recording disk drive.
摘要翻译： 石墨烯磁场传感器具有位于石墨烯感测层下方并且非常接近石墨烯感测层的铁磁偏置层。 传感器包括合适的衬底，铁磁偏置层，石墨烯感测层以及铁磁偏置层和石墨烯感应层之间的电绝缘底层。 底层可以是六方氮化硼（h-BN）层，并且传感器可以包括种子层以促进h-BN底层的生长。 铁磁偏置层具有垂直的磁各向异性，其磁矩基本上垂直于层的平面定向。 基于异常磁阻（EMR）效应的石墨烯磁场传感器可以用作磁记录盘驱动器中的磁阻读取头。
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4.发明授权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阱石墨烯结构公开(公告)号：US08618587B2
公开(公告)日：2013-12-31
申请号：US13532679
申请日：2012-06-25
申请人： Ernesto E. Marinero , Simone Pisana
发明人： Ernesto E. Marinero , Simone Pisana
IPC分类号： H01L29/76
CPC分类号： H01L29/0665 , B82Y10/00 , H01L29/0673 , H01L29/1606 , H01L29/775 , H01L29/7781 , H01L43/08 , H01L43/10 , Y10S977/734 , Y10S977/738
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。
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5.发明授权Thermally-assisted recording (TAR) disk with low thermal-conductivity underlayer 有权热辅助记录（TAR）磁盘，具有低导热性底层公开(公告)号：US08509039B1
公开(公告)日：2013-08-13
申请号：US13535499
申请日：2012-06-28
CPC分类号： G11B5/65 , G11B5/7325 , G11B5/746 , G11B2005/0021
摘要： A thermally-assisted recording (TAR) disk has an improved insulating layer beneath the chemically-ordered FePt (or CoPt) alloy recording layer. The insulating layer is a solid substitution crystalline alloy MgXO, where the element X is selected from nickel (Ni) and cobalt (Co). The composition of the MgXO crystalline solid substitutional alloy is of the form (Mg(100-y)Xy)O where y is between 10 and 90, and more preferably between 20 and 80. An optional layer of crystalline “pure” MgO may be located between the MgXO layer and the FePt recording layer and in contact with the recording layer, or between an underlayer and the MgXO layer.
摘要翻译： 热辅助记录（TAR）盘在化学有序的FePt（或CoPt）合金记录层下面具有改进的绝缘层。 绝缘层是固体取代结晶合金MgXO，元素X选自镍（Ni）和钴（Co）。 MgXO结晶固体取代合金的组成为（Mg（100-y）Xy）O形式，其中y在10和90之间，更优选在20和80之间。任选的结晶“纯”MgO层可以是 位于MgXO层和FePt记录层之间并与记录层接触，或位于底层与MgXO层之间。
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6.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
申请人： Ernesto E. Marinero , Simone Pisana
发明人： Ernesto E. Marinero , Simone Pisana
IPC分类号： H01L29/06
CPC分类号： H01L29/0665 , B82Y10/00 , H01L29/0673 , H01L29/1606 , H01L29/775 , H01L29/7781 , H01L43/08 , H01L43/10 , Y10S977/734 , Y10S977/738
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。
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7.发明申请FePt-C BASED MAGNETIC RECORDING MEDIA WITH ONION-LIKE CARBON PROTECTION LAYER 审中-公开基于FePt-C的磁性记录介质，具有类似保护层的保护层公开(公告)号：US20130114165A1
公开(公告)日：2013-05-09
申请号：US13290940
申请日：2011-11-07
摘要： A magnetic media for magnetic data recording having a plurality of magnetic grains protected by thin layers of graphitic carbon. The layers of graphitic carbon are formed in a manner similar to onion skins on an onion and can be constructed as single monatomic layers of carbon. The thin layers of graphitic carbon can be formed as layers of graphene or as fullerenes that either cover or partially encapsulate the magnetic gains. The layers of graphitic carbon provide excellent protection against corrosion and wear and greatly reduce magnetic spacing for improved magnetic performance.
摘要翻译： 一种用于磁数据记录的磁介质，具有被薄层石墨碳保护的多个磁性颗粒。 石墨碳层以与洋葱上的洋葱皮相似的方式形成，并且可以被构造为单个单原子层的碳。 石墨碳的薄层可以形成为石墨烯层或作为覆盖或部分地包封磁增益的富勒烯。 石墨碳层提供优异的防腐蚀和耐磨性保护，并大大减少磁间隔，以改善磁性能。
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公开(公告)号：US20110068320A1
公开(公告)日：2011-03-24
申请号：US12563446
申请日：2009-09-21
申请人： Ernesto E. Marinero , Simone Pisana
发明人： Ernesto E. Marinero , Simone Pisana
IPC分类号： H01L29/66
CPC分类号： H01L29/0665 , B82Y10/00 , H01L29/0673 , H01L29/1606 , H01L29/775 , H01L29/7781 , H01L43/08 , H01L43/10 , Y10S977/734 , Y10S977/738
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 charged 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结晶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的带电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。
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公开(公告)号：US09305571B2
公开(公告)日：2016-04-05
申请号：US12646851
申请日：2009-12-23
CPC分类号： G11B5/3106 , G11B5/102 , G11B5/72 , G11B5/8408
摘要： A magnetic disk according to one embodiment includes a recording layer; and a layer of graphene formed above the recording layer. A nucleation layer may be formed between the recording layer and the graphene layer in some approaches. A magnetic device according to another embodiment includes a transducer; a nucleation layer formed above the transducer; and a layer of graphene formed on the nucleation layer. A method according to one embodiment includes forming a nucleation layer above a magnetic layer of a magnetic disk or magnetic device; and forming a layer of graphene on the nucleation layer. A method according to another embodiment includes depositing SiC above a magnetic layer of a magnetic disk or magnetic device, the SiC being equivalent to several monolayers thick; and surface heating the SiC to selectively evaporate some of the Si from the SiC for forming a layer of graphene on a SiC layer. Additional products and methods are also presented.
摘要翻译： 根据一个实施例的磁盘包括记录层; 以及形成在记录层上方的一层石墨烯。 在一些方法中，可以在记录层和石墨烯层之间形成成核层。 根据另一实施例的磁性装置包括换能器; 形成在换能器上方的成核层; 并在成核层上形成一层石墨烯。 根据一个实施方案的方法包括在磁盘或磁性装置的磁性层上形成成核层; 并在成核层上形成一层石墨烯。 根据另一实施例的方法包括在磁盘或磁性装置的磁性层上沉积SiC，所述SiC相当于多个单层厚度; 并表面加热SiC以选择性地从SiC中蒸发出一些Si，以在SiC层上形成一层石墨烯。 还介绍了其他产品和方法。
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10.发明授权Method for making a perpendicular thermally-assisted recording (TAR) magnetic recording disk having a carbon segregant 失效制造具有碳分离器的垂直热辅助记录（TAR）磁记录盘的方法公开(公告)号：US08623670B1
公开(公告)日：2014-01-07
申请号：US13549500
申请日：2012-07-15
IPC分类号： H01L21/00 , H01L21/302
摘要： A method of making a thermally-assisted recording (TAR) disk includes etching an initial layer of generally spherically shaped FePt grains encapsulated by shells of graphitic carbon layers. The etching partially or completely removes the carbon layers on the tops of the shells, exposing the FePt grains while leaving carbon segregant material between the FePt grains. Additional Fe, Pt and C are then simultaneously deposited. The additional Fe and Pt grow on the exposed FePt grains and increase the vertical height of the grains, resulting in growth of columnar FePt grains. The additional C forms on top of the grains that together with the intergranular carbon form larger carbon shells. The resulting FePt grains thus have a generally columnar shape with perpendicular magnetic anisotropy, rather than a generally spherical shape. Lateral grain isolation is maintained by the carbon segregant remaining between the grains.
摘要翻译： 制造热辅助记录（TAR）盘的方法包括蚀刻由石墨碳层包裹的通常球形FePt晶粒的初始层。 蚀刻部分或完全去除壳的顶部上的碳层，暴露FePt晶粒，同时留下碳分离材料在FePt晶粒之间。 然后同时沉积额外的Fe，Pt和C。 附加的Fe和Pt在暴露的FePt晶粒上生长并增加晶粒的垂直高度，导致柱状FePt晶粒的生长。 在颗粒顶部附加的C形成与晶粒碳一起形成更大的碳壳。 所得到的FePt晶粒因此具有垂直磁各向异性的大致圆柱形状，而不是大致球形。 侧面颗粒分离由残留在颗粒之间的碳分离体维持。
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