Perpendicular heat-assisted magnetic recording (HAMR) medium with a perovskite oxide intermediate layer
    3.
    发明授权
    Perpendicular heat-assisted magnetic recording (HAMR) medium with a perovskite oxide intermediate layer 有权
    具有钙钛矿氧化物中间层的垂直热辅助磁记录(HAMR)介质

    公开(公告)号:US09530445B1

    公开(公告)日:2016-12-27

    申请号:US15002543

    申请日:2016-01-21

    摘要: A heat-assisted magnetic recording medium has a heat-sink layer, a chemically-ordered FePt alloy magnetic layer and a perovskite oxide intermediate layer between the heat-sink layer and the magnetic layer. The perovskite oxide intermediate layer may function as both a seed layer for the magnetic layer and a thermal barrier layer, as just a seed layer for the magnetic layer, or as just a thermal barrier layer. The intermediate layer is formed of a material selected from a ABO3 perovskite oxide (where A is selected from one or more of Ba, Sr and Ca and B is selected from one or more of Zr, Ce, Hf, Sn, Ir, and Nb), and a A2REBO6 rare earth double perovskite oxide (where RE is a rare earth element, A is selected from Ba, Sr and Ca, and B is selected from Nb and Ta).

    摘要翻译: 热辅助磁记录介质在散热层和磁性层之间具有散热层,化学有序的FePt合金磁性层和钙钛矿氧化物中间层。 钙钛矿氧化物中间层既可以用作磁性层的种子层,也可以作为仅用于磁性层的种子层,或仅作为热障壁的热障壁。 中间层由选自ABO 3钙钛矿氧化物(其中A选自Ba,Sr和Ca中的一种或多种)中选择的材料形成,B选自Zr,Ce,Hf,Sn,Ir和Nb中的一种或多种 )和A2REBO6稀土双钙钛矿氧化物(其中RE为稀土元素,A选自Ba,Sr和Ca,B选自Nb和Ta)。

    Barium ferrite magnetic storage media
    4.
    发明授权
    Barium ferrite magnetic storage media 有权
    钡铁氧体磁存储介质

    公开(公告)号:US09324354B2

    公开(公告)日:2016-04-26

    申请号:US12753718

    申请日:2010-04-02

    IPC分类号: G11B5/706 G11B5/714 G11B5/738

    摘要: Magnetic storage media that include a multilayer structure are described. In general, the magnetic storage media include a substrate, an underlayer that includes a plurality of underlayer particles formed over the substrate, and a magnetic layer that includes a plurality of magnetic particles formed over the underlayer. The magnetic layer may define a saturated magnetization and thickness product less than or equal to approximately 1.00 memu per square centimeter, and the magnetic particles may be selected from the group consisting of magnetic platelet-shaped particles and magnetic particles with an aspect ratio less than or equal to approximately 1.5. In addition, the described magnetic storage media may exhibit minimal interlayer diffusion between the underlayer and magnetic layer. Reduced interlayer diffusion between different layers of a magnetic recording medium may result in an improved magnetic recording surface for recording and storing data.

    摘要翻译: 描述了包括多层结构的磁存储介质。 通常,磁性存储介质包括基板,包括在基板上形成的多个下层颗粒的底层,以及包含形成在该下层上的多个磁性粒子的磁性层。 磁性层可以限定小于或等于约1.00毫秒/平方厘米的饱和磁化和厚度产品,并且磁性颗粒可以选自磁性粒子形颗粒和磁性颗粒,磁性颗粒和磁性颗粒的纵横比小于或等于 等于大约1.5。 此外,所描述的磁存储介质可能在底层和磁性层之间表现出最小的层间扩散。 在磁记录介质的不同层之间减少层间扩散可导致用于记录和存储数据的改进的磁记录表面。

    Interlayer comprising chromium-containing alloy
    6.
    发明授权
    Interlayer comprising chromium-containing alloy 有权
    夹层包含含铬合金

    公开(公告)号:US09190095B2

    公开(公告)日:2015-11-17

    申请号:US14159362

    申请日:2014-01-20

    摘要: An apparatus and method are provided for improving perpendicular magnetic recording media. The present invention provides media, and a method of fabricating media in a cost-effective manner, with a reduced ruthenium (Ru) content interlayer structure, while meeting media performance requirements. A perpendicular magnetic recording medium is provided comprising a non-magnetic substrate having a surface, and a layer stack situated on the substrate surface. The layer stack comprises, in overlying sequence from the substrate surface a magnetically soft underlayer; an amorphous or crystalline, non-magnetic seed layer; an interlayer structure for crystallographically orienting a layer of a perpendicular magnetic recording material situated on the underlayer; and at least one crystallographically oriented, magnetically hard, perpendicular magnetic recording layer situated on the interlayer structure. The interlayer structure is a stacked structure comprising, in overlying sequence: a chromium alloy situated on the seed layer; and an upper interlayer situated on the chromium alloy.

    摘要翻译: 提供了用于改进垂直磁记录介质的装置和方法。 本发明在满足介质性能要求的同时,提供了具有降低的钌(Ru)含量层间结构的以成本有效的方式制造介质的介质和方法。 提供了包括具有表面的非磁性基底和位于基底表面上的层叠的垂直磁记录介质。 层叠体以从衬底表面的叠加顺序包括一个软磁软底层; 无定形或结晶的非磁性种子层; 用于晶体取向位于底层上的垂直磁记录材料层的层间结构; 以及位于层间结构上的至少一个晶体取向的磁性硬的垂直磁记录层。 层间结构是层叠结构,其叠加顺序为:位于种子层上的铬合金; 和位于铬合金上的上层。

    PATTERNED PERPENDICULAR MAGNETIC RECORDING MEDIUM WITH ULTRATHIN NOBLE METAL INTERLAYER
    7.
    发明申请
    PATTERNED PERPENDICULAR MAGNETIC RECORDING MEDIUM WITH ULTRATHIN NOBLE METAL INTERLAYER 有权
    带超声波金属中间层的图形磁性记录介质

    公开(公告)号:US20150302878A1

    公开(公告)日:2015-10-22

    申请号:US14255752

    申请日:2014-04-17

    IPC分类号: G11B5/738 G11B5/66

    摘要: A bit-patterned media (BPM) magnetic recording disk has a cobalt (Co) alloy recording layer (RL), a ruthenium (Ru) containing underlayer (UL), and a noble metal film (NMF) as an interlayer between the RL and the UL. The RL is preferably oxide-free and is a Co alloy, like a CoPtCr alloy, with a hexagonal-close-packed (hcp) crystalline structure with its c-axis oriented substantially perpendicular to the plane of the RL. The NMF is an element from the Pt group (Pt, Pd, Rh, Ir) and Au, or an alloy of two or more of these elements, and has a thickness less than 3.0 nm, preferably between 0.3 and 1.0 nm. The NMF does not interrupt the epitaxial growth of the RL and has little to no effect on the distribution of the RL c-axis orientation. The NMF increases the coercivity (Hc) and perpendicular magnetic anisotropy constant (Ku) of the RL.

    摘要翻译: 位图案介质(BPM)磁记录盘具有钴(Co)合金记录层(RL),含有钌(Ru)的底层(UL))和作为中间层的贵金属膜(NMF),其在RL和 UL。 RL优选为无氧化物,并且是Co合金,如CoPtCr合金,具有六方密堆积(hcp)晶体结构,其c轴取向为基本上垂直于RL的平面。 NMF是来自Pt族(Pt,Pd,Rh,Ir)和Au的元素,或这些元素中的两种以上的合金,其厚度小于3.0nm,优选为0.3〜1.0nm。 NMF不会中断RL的外延生长,并且对RL c轴取向的分布几乎没有影响。 NMF增加RL的矫顽力(Hc)和垂直磁各向异性常数(Ku)。

    Magnetic recording medium and magnetic storage apparatus
    9.
    发明授权
    Magnetic recording medium and magnetic storage apparatus 有权
    磁记录介质和磁存储装置

    公开(公告)号:US08902545B2

    公开(公告)日:2014-12-02

    申请号:US13920197

    申请日:2013-06-18

    申请人: Showa Denko K.K.

    IPC分类号: G11B5/667 G11B5/738 G11B5/65

    CPC分类号: G11B5/738 G11B5/667

    摘要: A magnetic recording medium may have a stacked structure including a first soft magnetic layer, an orientation control layer, a lower recording layer, an intermediate layer, and an upper recording layer that are sequentially stacked, and a second soft magnetic layer provided between the lower recording layer and the intermediate layer.

    摘要翻译: 磁记录介质可以具有堆叠结构,其包括依次层叠的第一软磁层,取向控制层,下记录层,中间层和上记录层,以及设置在下层 记录层和中间层。

    MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE APPARATUS
    10.
    发明申请
    MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE APPARATUS 有权
    磁记录介质和磁存储设备

    公开(公告)号:US20140002917A1

    公开(公告)日:2014-01-02

    申请号:US13920197

    申请日:2013-06-18

    申请人: SHOWA DENKO K.K.

    IPC分类号: G11B5/738

    CPC分类号: G11B5/738 G11B5/667

    摘要: A magnetic recording medium may have a stacked structure including a first soft magnetic layer, an orientation control layer, a lower recording layer, an intermediate layer, and an upper recording layer that are sequentially stacked, and a second soft magnetic layer provided between the lower recording layer and the intermediate layer.

    摘要翻译: 磁记录介质可以具有堆叠结构,其包括依次层叠的第一软磁层,取向控制层,下记录层,中间层和上记录层,以及设置在下层 记录层和中间层。