利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

22 条记录 (耗时 0.025 秒)

    Magnetic thin film media with a pre-seed layer of CrTi
    1.
    发明授权
    Magnetic thin film media with a pre-seed layer of CrTi 失效
    具有CrTi预种子层的磁性薄膜介质

    公开(公告)号：US06852430B2

    公开(公告)日：2005-02-08

    申请号：US10059780

    申请日：2002-01-29

    申请人： Xiaoping Bian ,  Mary Frances Doerner ,  James A. Hagan ,  Tim Minvielle ,  Mohammad Taghi Mirzamaani ,  Adam Daniel Polcyn ,  Kai Tang

    发明人： Xiaoping Bian ,  Mary Frances Doerner ,  James A. Hagan ,  Tim Minvielle ,  Mohammad Taghi Mirzamaani ,  Adam Daniel Polcyn ,  Kai Tang

    IPC分类号： G11B5/73 ,  H01F10/30 ,  H01F10/32 ,  G11B5/66 ,  G11B5/70

    CPC分类号： B82Y25/00 ,  G11B5/732 ,  H01F10/30 ,  H01F10/32 ,  Y10S428/90 ,  Y10T428/12472 ,  Y10T428/12681 ,  Y10T428/265

    摘要： A thin film magnetic media structure with a pre-seed layer of CrTi is disclosed. The CrTi pre-seed layer presents an amorphous or nanocrystalline structure. The preferred seed layer is RuAl for use with the CrTi pre-seed layer. The use of the CrTi/RuAl bilayer structure provides superior adhesion to the substrate and resistance to scratching, as well as, excellent coercivity and signal-to-noise ratio (SNR) and reduced cost over the prior art. One embodiment of the invention sputter-deposits a CrTi pre-seed layer and a RuAl seed layer followed by at least one underlayer and at least one magnetic layer on a circumferentially polished substrate structure to achieve an Mrt orientation ratio greater than one. Two methods according to the invention allow the Mrt orientation ratio of the disk to be adjusted or maximized by varying the thickness of the RuAl seed layer and/or altering the atomic percentage of titanium in the pre-seed layer.

    摘要翻译： 公开了一种具有CrTi预种子层的薄膜磁介质结构。 CrTi预种子层呈现无定形或纳米晶体结构。 优选的种子层是用于CrTi预种子层的RuAl。 CrTi / RuAl双层结构的使用提供了优异的与基板的粘附性和耐划伤性，以及优于现有技术的矫顽力和信噪比（SNR）以及降低的成本。 本发明的一个实施方案溅射沉积CrTi预种子层和RuAl种子层，随后是周向抛光的衬底结构上的至少一个底层和至少一个磁性层，以实现大于1的Mrt取向比。 根据本发明的两种方法允许通过改变RuAl种子层的厚度和/或改变预种子层中钛的原子百分比来调节或最大化盘的Mrt取向比。

    Thin film magnetic recording disk with a chromium-nickel pre-seed layer
    3.
    发明授权
    Thin film magnetic recording disk with a chromium-nickel pre-seed layer 失效
    具有铬镍预种子层的薄膜磁记录盘

    公开(公告)号：US06572989B2

    公开(公告)日：2003-06-03

    申请号：US09876571

    申请日：2001-06-06

    申请人： Xiaoping Bian ,  Mary Frances Doerner ,  Tim Minvielle ,  Mohammad Taghi Mirzamaani ,  Kai Tang

    发明人： Xiaoping Bian ,  Mary Frances Doerner ,  Tim Minvielle ,  Mohammad Taghi Mirzamaani ,  Kai Tang

    IPC分类号： G11B566

    CPC分类号： G11B5/732 ,  G11B5/66 ,  G11B5/7325 ,  Y10S428/90 ,  Y10T428/12465 ,  Y10T428/12847 ,  Y10T428/12854 ,  Y10T428/12944 ,  Y10T428/24975 ,  Y10T428/265

    摘要： In a thin film magnetic disk, a crystalline CrNi pre-seed layer is sputtered onto a substrate such as glass, followed by a RuAl seed layer. The CrNi pre-seed layer reduces grain size and its distribution, and improves in-plane crystallographic orientation, coercivity (Hc) and SNR. In a preferred embodiment the RuAl seed layer is followed by a Cr alloy underlayer. In a preferred embodiment the Cr alloy underlayer is followed by an onset layer and a magnetic layer, or by two or more magnetic layers antiferromagnetically coupled through one or more spacer layers. The crystalline CrNi pre-seed layer allows use of a thinner RuAl seed layer which results in smaller overall grain size, as well as a reduction in manufacturing cost due to relatively high cost of ruthenium. The CrNi pre-seed layer also allows use of a thinner Cr alloy underlayer which also contributes to reduce overall grain size.

    摘要翻译： 在薄膜磁盘中，将结晶CrNi预种子层溅射到诸如玻璃的衬底上，随后是RuAl种子层。 CrNi预种子层减小晶粒尺寸及其分布，并提高晶面取向，矫顽力（Hc）和信噪比。 在优选的实施方案中，RuAl种子层之后是Cr合金底层。 在优选的实施方案中，Cr合金底层之后是起始层和磁性层，或者由两个或更多个通过一个或多个间隔层反铁磁耦合的磁性层。 结晶CrNi预种子层允许使用更薄的RuAl种子层，其导致更小的总体晶粒尺寸，以及由于钌的相对高的成本而导致的制造成本的降低。 CrNi预种子层还允许使用更薄的Cr合金底层，这也有助于减小总体晶粒尺寸。

    Thin film magnetic recording disk with ruthenium-aluminum layer
    8.
    发明授权
    Thin film magnetic recording disk with ruthenium-aluminum layer 失效
    带钌铝层的薄膜磁记录盘

    公开(公告)号：US06846543B2

    公开(公告)日：2005-01-25

    申请号：US10850735

    申请日：2004-05-21

    申请人： Xiaoping Bian ,  Mary Frances Doerner ,  Jinshan Li ,  Mohammad Taghi Mirzamaani ,  Kai Tang

    发明人： Xiaoping Bian ,  Mary Frances Doerner ,  Jinshan Li ,  Mohammad Taghi Mirzamaani ,  Kai Tang

    IPC分类号： G11B5/64 ,  G11B5/73 ,  G11B5/84 ,  G11B5/66 ,  B05D5/12 ,  B32B3/02 ,  B32B15/00 ,  G11B5/70

    CPC分类号： G11B5/732 ,  G11B5/656 ,  G11B5/7325 ,  G11B5/8404 ,  Y10S428/90 ,  Y10T428/12465 ,  Y10T428/12861 ,  Y10T428/265

    摘要： A magnetic thin film disk for use in a disk drive with a ruthenium-aluminum (RuAl) seed layer with B2 structure followed by a NiAl layer is described. The disk has reduced noise and increased squareness which results in improved recording performance in a disk drive utilizing the disk. The improved disk is formed by first depositing the RuAl seed layer on the substrate then the NiAl layer is deposited onto the NiAl, followed by the other layers required for a magnetic disk such as an underlayer material with a lattice parameter compatible with RuAl such as Cr-alloy, followed by a standard hcp magnetic material. The RuAl seed layer promotes a [100] preferred orientation in the underlayer which in turn promotes a [11{overscore (2)}0] preferred orientation in the magnetic layer.

    摘要翻译： 描述了一种用于带有B2结构的钌 - 铝（RuAl）晶种层的磁盘驱动器的磁性薄膜盘片，然后是NiAl层。 磁盘具有降低的噪声和增加的矩形度，这导致利用磁盘的磁盘驱动器中的记录性能得到改善。 通过首先在衬底上沉积RuAl籽晶层，然后将NiAl层沉积到NiAl上，然后沉积到具有与RuAl相容的晶格参数如Cr的磁盘所需的其它层，形成改进的盘 合金，其次是标准的hcp磁性材料。 RuAl种子层促进底层中的优选取向，这进一步促进了磁性层中的[11（超（20））优选取向。

    Laminated thin film disk for longitudinal recording
    9.
    发明授权
    Laminated thin film disk for longitudinal recording 失效
    用于纵向记录的层压薄膜盘

    公开(公告)号：US6077586A

    公开(公告)日：2000-06-20

    申请号：US892724

    申请日：1997-07-15

    申请人： Xiaoping Bian ,  Mary Frances Doerner ,  Mohammad Taghi Mirzamaani

    发明人： Xiaoping Bian ,  Mary Frances Doerner ,  Mohammad Taghi Mirzamaani

    IPC分类号： G11B5/64 ,  G11B5/65 ,  G11B5/66 ,  G11B5/738 ,  G11B5/84

    CPC分类号： G11B5/66 ,  Y10S428/90 ,  Y10T428/265

    摘要： A thin film disk with laminated magnetic layers, for use in a disk drive, is described which exhibits a single switching behavior resulting in a smooth hysteresis loop. This is achieved by depositing a seed layer prior to depositing the Cr or Cr alloy underlayer. The seed layer material is selected to promote a [112] PO in the underlayer and subsequently a [1010] PO in the two or more laminated magnetic layers. The [1010] PO aids in maintaining minimal Hc variations between the magnetic layers. The seed layer can be a B2 type structure material such as NiAl or FeAl or any other material which results in the [112] PO in the underlayer. The underlayer is preferably Cr or a Cr alloy; the magnetic layers are preferably CoPtCr, CoPtCrTa or CoPtCrB. The spacer layer between the magnetic layers may be made from the same material as the underlayer, but may also be different, e.g. an hexagonal crystalline material such as Ru. The disks of the invention can be manufactured in standard high volume sputtering systems by virtue of the fact the magnetic layers have a reduced dependency on substrate temperature.

    摘要翻译： 描述了一种用于磁盘驱动器的具有层叠磁性层的薄膜盘，其具有导致平滑磁滞回线的单一切换行为。 这是通过在沉积Cr或Cr合金底层之前沉积种子层来实现的。 选择种子层材料以促进底层中的[112] PO和随后在两个或更多个层叠磁性层中的[10 + E，ov 1 + EE 0] PO。 [10 + E，ovs 1 + EE 0] PO有助于保持磁层之间的最小Hc变化。 种子层可以是B2型结构材料，例如NiAl或FeAl，或其它材料，其导致底层中的PO。 底层优选为Cr或Cr合金; 磁性层优选为CoPtCr，CoPtCrTa或CoPtCrB。 磁性层之间的间隔层可以由与底层相同的材料制成，但是也可以不同。 六方晶结晶材料如Ru。 由于磁性层对衬底温度的依赖性降低，本发明的磁盘可以用标准的高体积溅射系统制造。

    Seed layer and underlayer with high and low oxygen concentration portions for hand disk magnetic recording medium on a glass substrate
    10.
    发明授权
    Seed layer and underlayer with high and low oxygen concentration portions for hand disk magnetic recording medium on a glass substrate 失效
    在玻璃基板上的手盘磁记录介质的种子层和具有高和低氧浓度部分的底层

    公开(公告)号：US06413608B1

    公开(公告)日：2002-07-02

    申请号：US09336641

    申请日：1999-06-18

    申请人： Xiaoping Bian ,  Mary Frances Doerner ,  Shanlin Duan ,  Jinshan Li ,  Mohammad Taghi Mirzamaani

    发明人： Xiaoping Bian ,  Mary Frances Doerner ,  Shanlin Duan ,  Jinshan Li ,  Mohammad Taghi Mirzamaani

    IPC分类号： G11B566

    CPC分类号： G11B5/732 ,  C23C14/185 ,  G11B5/7325 ,  Y10S428/90 ,  Y10T428/24942 ,  Y10T428/265

    摘要： The thin film magnetic disk of the present invention includes a non-metallic substrate having a seed layer deposited on the substrate, an underlayer deposited upon the seed layer composed of a chromium alloy having a relatively high oxygen concentration portion of from 2,000 ppm to 20,000 ppm and preferably approximately 4,000 ppm to 12,000 ppm, followed by a relatively low oxygen concentration portion of from 0-2,000 ppm, and preferably from 500 ppm to 1,500 ppm and a magnetic layer that is deposited upon the underlayer. The underlayer total thickness is in the range of from approximately 250 Å to approximately 700 Å with a preferred thickness of approximately 450 Å, wherein approximately half of the underlayer thickness is the high oxygen concentration portion and half is the low oxygen concentration portion.

    摘要翻译： 本发明的薄膜磁盘包括具有沉积在基板上的种子层的非金属基板，沉积在由具有2000ppm至20,000ppm的较高氧浓度部分的铬合金构成的种子层的底层 优选为约4,000ppm〜12,000ppm，其次为相对较低的氧浓度部分为0〜2,000ppm，优选为500ppm〜1500ppm，以及沉积在底层上的磁性层。 底层总厚度在约250至约700的范围内，优选的厚度约为450，其中下层厚度的大约一半是高氧浓度部分，一半是低氧浓度部分。