公开(公告)号：US20130202915A1

公开(公告)日：2013-08-08

申请号：US13835544

申请日：2013-03-15

申请人： Seagate Technology, LLC

发明人： Ibro Tabakovic ,  Steve Riemer ,  Jie Gong ,  Mark Thomas Kief ,  Ming Sun

IPC分类号： G11B5/84 ,  G11B5/65

CPC分类号： G11B5/84 ,  B82Y10/00 ,  C25D5/022 ,  C25D11/20 ,  C25D11/34 ,  C25F3/14 ,  G11B5/656 ,  G11B5/743 ,  G11B5/82 ,  G11B5/855 ,  G11B5/858 ,  Y10T428/24355

摘要： A method is disclosed for defining discrete magnetic and non-magnetic regions on the magnetic film layer of a storage media substrate. The method applies anodic oxidation of a cobalt-containing magnetic film layer to remove cobalt, followed by controlled deposition of a non-magnetic matrix into the regions where the cobalt has been removed. Deposition may either be electrodeposition, collimated vacuum deposition, or other methods depending upon the composition of the non-magnetic matrix being deposited. The method may be performed in a single electrochemical cell.

摘要翻译： 公开了一种用于在存储介质基板的磁性膜层上定义分立的磁性和非磁性区域的方法。 该方法对含钴磁性膜层进行阳极氧化以除去钴，然后将非磁性基质控制沉积到去除了钴的区域中。 沉积可以是电沉积，准直真空沉积或取决于所沉积的非磁性基质的组成的其它方法。 该方法可以在单个电化学电池中进行。

公开(公告)号：US08501330B2

公开(公告)日：2013-08-06

申请号：US13270715

申请日：2011-10-11

申请人： Shaoping Li ,  Kaizhong Gao ,  Lei Wang ,  Wenzhong Zhu ,  Xiaobin Wang

发明人： Shaoping Li ,  Kaizhong Gao ,  Lei Wang ,  Wenzhong Zhu ,  Xiaobin Wang

IPC分类号： G11B5/66 ,  G11B5/65

CPC分类号： G11B5/667 ,  B82Y10/00 ,  G11B5/64 ,  G11B5/65 ,  G11B5/656 ,  G11B5/66 ,  G11B5/743 ,  G11B5/746 ,  G11B5/82 ,  G11B2005/0029 ,  H01F41/0206 ,  Y10S428/90 ,  Y10T29/4902 ,  Y10T29/49032 ,  Y10T29/49067 ,  Y10T428/12458 ,  Y10T428/12465 ,  Y10T428/12931 ,  Y10T428/26 ,  Y10T428/265

摘要： A perpendicular magnetic recording medium adapted for high recording density and high data recording rate comprises a non-magnetic substrate having at least one surface with a layer stack formed thereon, the layer stack including a perpendicular recording layer containing a plurality of columnar-shaped magnetic grains extending perpendicularly to the substrate surface for a length, with a first end distal the surface and a second end proximal the surface, wherein each of the magnetic grains has: (1) a gradient of perpendicular magnetic anisotropy field Hk extending along its length between the first end and second ends; and (2) predetermined local exchange coupling strengths along the length.

公开(公告)号：US20130175646A1

公开(公告)日：2013-07-11

申请号：US13549901

申请日：2012-07-16

申请人： Kwang-seok Kim ,  Sung-chul Lee

发明人： Kwang-seok Kim ,  Sung-chul Lee

IPC分类号： H01L29/82 ,  G11B5/66 ,  H01F41/14 ,  G11B5/65

CPC分类号： H01L43/02 ,  B82Y40/00 ,  G11C11/161 ,  G11C11/1675 ,  H01F10/30 ,  H01F10/3254 ,  H01F10/3286 ,  H01F41/302 ,  H01L27/228 ,  H01L43/08 ,  H01L43/12

摘要： Magnetic structures, methods of forming the same, and memory devices including a magnetic structure, include a magnetic layer, and a stress-inducing layer on a first surface of the magnetic layer, a non-magnetic layer on a second surface of the magnetic layer. The stress-inducing layer is configured to induce a compressive stress in the magnetic layer. The magnetic layer has a lattice structure compressively strained due to the stress-inducing layer.

公开(公告)号：US20120315505A1

公开(公告)日：2012-12-13

申请号：US13156272

申请日：2011-06-08

申请人： Ernesto E. Marinero ,  Dieter K. Weller ,  Brian R. York

发明人： Ernesto E. Marinero ,  Dieter K. Weller ,  Brian R. York

IPC分类号： G11B5/66 ,  G11B5/65

CPC分类号： G11B5/66 ,  G11B5/65 ,  G11B5/7325 ,  G11B5/82

摘要： A perpendicular magnetic recording disk has a graded-anisotropy recording layer (RL) formed of at least two ferromagnetically exchange coupled CoPtCr-oxide magnetic layers (MAG1 and MAG2) with two nucleation films (NF1 and NF2) between the magnetic layers. NF1 is a metal film, preferably Ru or a Ru-based alloy like RuCr, sputter deposited on MAG1 at low pressure to a thickness between about 0.1-1.5 nm. NF2 is a metal oxide film, preferably an oxide of Ta, sputter deposited on NF1 at high pressure to a thickness between about 0.2-1.0 nm. MAG2 is sputter deposited over NF2. NF1 and NF2 provide a significant reduction in average grain size in the RL from a graded-anisotropy RL without nucleation films between MAG1 and MAG2, while also assuring that MAG1 and MAG2 are strongly exchange coupled.

摘要翻译： 垂直磁记录盘具有由至少两个铁磁交换的CoPtCr-氧化物磁性层（MAG1和MAG2）与磁性层之间的两个成核膜（NF1和NF2）形成的渐变各向异性记录层（RL）。 NF1是金属膜，优选Ru或Ru基Ru合金，在低压下溅射沉积在MAG1上，厚度在约0.1-1.5nm之间。 NF2是金属氧化物膜，优选Ta的氧化物，在高压下溅射沉积在NF1上，厚度在约0.2-1.0nm之间。 MAG2溅射沉积在NF2上。 NF1和NF2从MAG1和MAG2之间没有成核膜的梯度各向异性RL提供RL中的平均晶粒尺寸的显着降低，同时还确保MAG1和MAG2强烈交换耦合。

公开(公告)号：US08329319B2

公开(公告)日：2012-12-11

申请号：US12090562

申请日：2005-10-17

申请人： Luping Shi ,  Wendong Song ,  Xiangshui Miao ,  Tow Chong Chong

发明人： Luping Shi ,  Wendong Song ,  Xiangshui Miao ,  Tow Chong Chong

IPC分类号： G11B5/65

CPC分类号： G11B7/00454 ,  G11B5/02 ,  G11B5/65 ,  G11B7/243 ,  G11B11/10586 ,  G11B2005/0002 ,  G11B2007/24308 ,  G11C11/14 ,  G11C13/0004 ,  H01F10/193 ,  H01F41/18 ,  H01F41/205 ,  H01F41/22 ,  H01F41/26 ,  H01F41/30 ,  H01L45/06 ,  H01L45/1233 ,  H01L45/126 ,  H01L45/143 ,  H01L45/144 ,  H01L45/148 ,  H01L45/1625 ,  Y10T428/115 ,  Y10T428/24942 ,  Y10T428/32

摘要： The invention relates to a phase change magnetic composite material for use in an information recording medium, said material comprising a phase change material component, and a ferromagnetic material component, wherein said material exhibits both magnetic effects and phase change effects, and is usable for optical media, phase change random access memory (PCRAM) devices, magnetic random access memory (MRAM) devices, solid state memory devices, sensor devices, logical devices, cognitive devices, artificial neuron network, three level device, control device, SOC (system on chip) device, and semiconductors.

摘要翻译： 本发明涉及用于信息记录介质的相变磁复合材料，所述材料包括相变材料组分和铁磁材料组分，其中所述材料表现出磁效应和相变效应，并且可用于光学 媒体，相变随机存取存储器（PCRAM）器件，磁随机存取存储器（MRAM）器件，固态存储器件，传感器器件，逻辑器件，认知器件，人造神经网络，三电平器件，控制器件，SOC 芯片）器件和半导体。

公开(公告)号：US20120275059A1

公开(公告)日：2012-11-01

申请号：US13351167

申请日：2012-01-16

申请人： Tomoyuki Maeda ,  Yousuke Isowaki ,  Akira Watanabe

发明人： Tomoyuki Maeda ,  Yousuke Isowaki ,  Akira Watanabe

IPC分类号： G11B5/127 ,  G11B5/667 ,  B05D5/12 ,  G11B5/65

CPC分类号： G11B5/7325 ,  G11B5/746 ,  G11B5/855

摘要： According to one embodiment, a magnetic recording medium includes a substrate, an auxiliary layer formed on the substrate, and at least one perpendicular magnetic recording layer formed on the auxiliary layer. The perpendicular magnetic recording layer includes a magnetic dot pattern. The perpendicular magnetic recording layer is made of an alloy material containing one element selected from iron and cobalt, and one element selected from platinum and palladium. This alloy material has the L10 structure, and is (001)-oriented. The auxiliary layer includes a dot-like first region covered with the magnetic dot pattern, and a second region not covered with the magnetic dot pattern. The first region is made of one metal selected from (100)-oriented nickel and (100)-oriented iron. The second region contains an oxide of the metal used in the first region.

摘要翻译： 根据一个实施例，磁记录介质包括基板，形成在基板上的辅助层以及形成在辅助层上的至少一个垂直磁记录层。 垂直磁记录层包括磁点图形。 垂直磁记录层由含有选自铁和钴的一种元素的合金材料和选自铂和钯的一种元素制成。 该合金材料具有L10结构，为（001）取向。 辅助层包括用磁点图案覆盖的点状第一区域和未被磁点图案覆盖的第二区域。 第一区域由选自（100）取向的镍和（100）取向的铁中的一种金属制成。 第二区域包含在第一区域中使用的金属的氧化物。

公开(公告)号：US20120156524A1

公开(公告)日：2012-06-21

申请号：US13330219

申请日：2011-12-19

申请人： Shinji KAWAKAMI ,  Sadamu KUSE ,  Kenji TANAKA

发明人： Shinji KAWAKAMI ,  Sadamu KUSE ,  Kenji TANAKA

IPC分类号： G11B5/65

CPC分类号： G11B5/714 ,  G11B5/70 ,  G11B5/70678

摘要： The magnetic recording medium of the present invention comprises: a non-magnetic substrate; a non-magnetic layer formed on one of principal surfaces of the non-magnetic substrate; and a magnetic layer formed on a principal surface of the non-magnetic layer opposite to the non-magnetic substrate. Mr and t satisfy 0.0020 μT·m≦Mr·t≦0.0150 μT·m, where Mr is the residual magnetic flux density of the magnetic layer, and t is the average thickness of the magnetic layer, L1 satisfies 2 nm≦L1≦6 nm, where L1 is the average thickness of a first mixed layer that is formed on the surface of the magnetic layer opposite to the non-magnetic layer, and L2 satisfies 0.1≦L2/t≦0.45, where L2 is the average thickness of a second mixed layer that is formed on the surface of the magnetic layer facing the non-magnetic layer.

摘要翻译： 本发明的磁记录介质包括：非磁性基片; 形成在非磁性基板的一个主表面上的非磁性层; 以及形成在与非磁性基板相对的非磁性层的主表面上的磁性层。 Mr和t满足0.0020μT·m＆nlE; Mr·t＆nlE; 0.0150μT·m，其中Mr是磁性层的剩余磁通密度，t是磁性层的平均厚度，L1满足2nm＆nlE; L1＆nlE; 6 nm，其中L1是形成在与非磁性层相反的磁性层的表面上的第一混合层的平均厚度，并且L2满足0.1＆lt; lE; L2 / t＆nlE; 0.45，其中L2是 形成在面向非磁性层的磁性层的表面上的第二混合层。

公开(公告)号：US20120147718A1

公开(公告)日：2012-06-14

申请号：US12964643

申请日：2010-12-09

申请人： Olav Hellwig ,  Andrew Thomas McCallum ,  Dieter K. Weller

发明人： Olav Hellwig ,  Andrew Thomas McCallum ,  Dieter K. Weller

IPC分类号： G11B5/667 ,  G11B11/00 ,  G11B5/127 ,  G11B5/66 ,  G11B5/65

CPC分类号： G11B5/855 ,  G11B5/1278 ,  G11B5/66 ,  G11B5/7325 ,  G11B5/746 ,  G11B5/82

摘要： A bit-patterned media (BPM) magnetic recording disk has discrete data islands with an exchange-coupled composite (ECC) recording layer (RL) formed of a high-anisotropy chemically-ordered FePt alloy lower layer, a lower-anisotropy Co/X laminate or multilayer (ML) upper layer with perpendicular magnetic anisotropy, wherein X is Pt, Pd or Ni, and an optional nonmagnetic separation layer or coupling layer (CL) between the FePt layer and the ML. The FePt alloy layer is sputter deposited onto a seed layer structure, like a CrRu/Pt bilayer, while the disk substrate is maintained at an elevated temperature to assure the high anisotropy field Hk is achieved. The high-temperature deposition together with the CrRu/Pt seed layer structure provide a very smooth surface for subsequent deposition of the ML (and optional CL). The separate Co/X ML has by itself a very narrow switching field distribution (SFD), so that the SFD of the ECC RL is much narrower than the SFD for the FePt layer alone.

摘要翻译： 位图形介质（BPM）磁记录盘具有离散数据岛，其具有由高各向异性化学排序的FePt合金下层，较低各向异性Co / X的低交换耦合复合（ECC）记录层 具有垂直磁各向异性的层压或多层（ML）上层，其中X是Pt，Pd或Ni，以及FePt层和ML之间的任选的非磁性分离层或偶合层（CL）。 将FePt合金层溅射沉积到种子层结构上，如CrRu / Pt双层，同时将盘基底保持在升高的温度，以确保实现高各向异性场Hk。 高温沉积与CrRu / Pt种子层结构一起提供了非常光滑的表面，用于随后沉积ML（和可选的CL）。 单独的Co / X ML本身具有非常窄的开关场分布（SFD），使得ECC RL的SFD比仅用于FePt层的SFD窄得多。

公开(公告)号：US08124255B2

公开(公告)日：2012-02-28

申请号：US12457194

申请日：2009-06-03

申请人： Shuichi Okawa ,  Kazuhiro Hattori ,  Narutoshi Fukuzawa ,  Takahiro Suwa

发明人： Shuichi Okawa ,  Kazuhiro Hattori ,  Narutoshi Fukuzawa ,  Takahiro Suwa

IPC分类号： G11B5/65

CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/746 ,  G11B5/855

摘要： A highly reliable magnetic recording medium is provided which has a recording layer formed in a concavo-convex pattern and wherein the recording layer is unlikely to cause a change in magnetic properties. The magnetic recording medium includes a substrate, a recording layer formed in a predetermined concavo-convex pattern over the substrate, convex portions of the concavo-convex pattern serving as recording elements; and a filler portion filling a concave portion between the recording elements. The filler portion comprises a metal-based main filler material and oxygen. Oxygen is unevenly distributed in the filler portion so that the ratio of the number of oxygen atoms to the total of the number of atoms of the main filler material and the number of oxygen atoms is greater in an upper surface portion of the filler portion than in a lower portion of the filler portion.

摘要翻译： 提供了一种高度可靠的磁记录介质，其具有形成为凹凸图案的记录层，并且其中记录层不太可能导致磁性变化。 磁记录介质包括基板，在基板上形成为预定的凹凸图案的记录层，作为记录元件的凹凸图案的凸部; 以及填充部分填充记录元件之间的凹部。 填料部分包括金属基填料和氧气。 氧气不均匀地分布在填料部分中，使得填料部分的上表面部分中的氧原子数与主填料材料的原子数和氧原子数的总和的比例大于在 填充部分的下部。

公开(公告)号：US08007932B2

公开(公告)日：2011-08-30

申请号：US12313409

申请日：2008-11-19

申请人： Yoshihiko Ooeda ,  Masayuki Ishikawa

发明人： Yoshihiko Ooeda ,  Masayuki Ishikawa

IPC分类号： G11B5/65

CPC分类号： G11B5/725 ,  G11B5/82

摘要： Embodiments of the present invention provide a magnetic disk having a lubricating layer formed on the surface thereof, which meets all the requirements for adhesiveness, adequate flowability, and strong binding power. In a particular embodiment, a magnetic disk has a magnetic layer, a protective layer, and a lubricating layer which are formed on a non-magnetic substrate, which is characterized in that said lubricating layer is comprised of a lubricant containing a first ingredient and a second ingredient, said first ingredient as the main constituent being a first perfluoropolyether compound represented by the formula (1) below, which has a weight-average molecular weight of 500 to 6000 and a dispersity smaller than 1.3, and said second ingredient being a second perfluoropolyether compound which has a weight-average molecular weight of 500 to 6000 and has 6 to 10 hydroxyl groups (on average) in one molecule, Rt-Rf1-Rt  (1) where, Rf1 denotes a perfluoropolyether chain represented by the formula (2) and Rt denotes a terminal group represented by the formula (3), —CF2O—[(CF2CF2O)m—(CF2O)n]—CF2—  (2) where, m and n each denote a natural number,

摘要翻译： 本发明的实施例提供一种具有形成在其表面上的润滑层的磁盘，其满足粘合性，足够的流动性和强的结合力的所有要求。 在特定实施例中，磁盘具有形成在非磁性基板上的磁性层，保护层和润滑层，其特征在于，所述润滑层由含有第一成分和 第二成分，所述第一成分作为主要成分是由下式（1）表示的第一全氟聚醚化合物，其重均分子量为500至6000，分散度小于1.3，所述第二成分为第二成分 全氟聚醚化合物，其重均分子量为500〜6000，在1分子中平均具有6〜10个羟基（Rt-Rf1-Rt（1）），Rf1表示由式（2）表示的全氟聚醚链 ）和Rt表示由式（3）表示的末端基团，-CF 2 O - [（CF 2 CF 2 O）m - （CF 2 O）n] -CF 2 - （2）其中，m和n各自表示自然数，