HEAT-ASSISTED MAGNETIC RECORDING (HAMR) SLIDER WITH STRAY LIGHT REMOVAL

    公开(公告)号:WO2023086125A1

    公开(公告)日:2023-05-19

    申请号:PCT/US2022/029341

    申请日:2022-05-14

    Abstract: A heat‑assisted magnetic recording (HAMR) disk drive uses a semiconductor laser mounted on a slider to deliver light to a near-field transducer (NFT) via a waveguide located inside the slider. The waveguide includes a core and cladding material that is transparent to the laser light and surrounds the core. Layers of stray light absorption material are located inside the slider on opposite edges of the waveguide core in the same plane as the core and on opposite sides of the waveguide core in planes spaced from the plane of the core. Portions of the waveguide cladding material are located between the waveguide core and the stray light absorption layers. The stray light absorption layers absorb light that leaks into the cladding material and substantially reduces stray light reflected to the laser to prevent undesirable laser power fluctuation.

    VERTICAL CAVITY SURFACE EMITTING LASER AND HEAD GIMBAL ASSEMBLY

    公开(公告)号:WO2022265693A1

    公开(公告)日:2022-12-22

    申请号:PCT/US2022/016654

    申请日:2022-02-16

    Abstract: Embodiments of the present disclosure generally relate to a vertical cavity surface emitting laser, a head gimbal assembly for mounting a vertical cavity surface emitting laser, and devices incorporating such articles. In an embodiment, a vertical cavity surface emitting laser (VCSEL) device is provided. The VCSEL device includes a chip for mounting on a slider and two laser diode electrodes. The chip has six surfaces, wherein a first surface of the chip is for facing the slider, a second surface of the chip is opposite the first surface, and the two laser diode electrodes are positioned in any combination on one or more of a third surface, a fourth surface, a fifth surface, or a sixth surface of the chip.

    HARD DISK DRIVE GIMBAL DESIGN WITH HIGH YAW MODE

    公开(公告)号:WO2022178171A1

    公开(公告)日:2022-08-25

    申请号:PCT/US2022/016859

    申请日:2022-02-17

    Abstract: A trace gimbal is described herein. In some embodiments, the trace gimbal includes outer struts including a front outrigger at a distal end of the trace gimbal and a rear outrigger at a proximal end of the trace gimbal. The front outrigger includes a distal front outrigger and a proximal front outrigger, and the rear outrigger includes a distal rear outrigger and a proximal rear outrigger. The trace gimbal further includes a middle strut extending in a width direction of the trace gimbal and adjoining the proximal front outrigger to the rear outrigger, and an inner strut connecting the middle strut to a slider tongue. The inner strut includes a slot, and the inner strut and the middle strut adjoin the outer gimbal struts to the slider tongue.

    THERMAL COMPENSATION FOR LASER IN HEAT ASSISTED MAGNETIC RECORDING

    公开(公告)号:WO2020089686A1

    公开(公告)日:2020-05-07

    申请号:PCT/IB2019/001154

    申请日:2019-10-29

    Abstract: A storage medium controller has been designed to maintain thermal stability of a heat source based on a history of heat source active/inactive durations so that a variation in spot size generated by the heat source is reduced during Heat Assisted Magnetic Recording (HAMR). The storage medium controller modulates power to the heat source based on these active/inactive durations. While the heat source is inactive, the storage medium controller increases a thermal compensation value and after the heat source is activated, the storage medium controller drives the heat source according to a current parameter proportional to the thermal compensation value. As the heat source continues being active, the storage medium controller decreases the thermal compensation value and proportional current parameter so that thermal stability of the heat source is maintained.

    磁気テープ装置、磁気テープの検査方法、及び非一時的なコンピュータ可読媒体

    公开(公告)号:WO2019188279A1

    公开(公告)日:2019-10-03

    申请号:PCT/JP2019/010225

    申请日:2019-03-13

    Inventor: 鈴木 光則

    Abstract: 磁気テープの状態をより正確に検出することができる磁気テープ装置を提供する。磁気テープ装置(100)は、磁気テープ(201)を巻き取る巻き取りリール(101)と、磁気テープ(201)への情報の書き込みと、磁気テープ(201)に記録された情報の読み取りとの少なくとも一方を行うドライブヘッド(103)と、磁気テープ(201)の表面を撮像するイメージセンサ(104)と、イメージセンサ(104)によって撮像された画像を画像処理し、磁気テープ(201)の表面に異常があるか否かを判断する制御部(105)と、を備え、制御部(105)は、イメージセンサ(104)が磁気テープ(201)の表面を撮像する際に、ドライブヘッド(103)の種類と磁気テープ(201)の記録密度との少なくとも一方に応じて、巻き取りリール(101)による磁気テープ(201)の巻き取り速さを調整する。

    MULTIPIECE NEAR FIELD TRANSDUCERS (NFTS)
    6.
    发明申请
    MULTIPIECE NEAR FIELD TRANSDUCERS (NFTS) 审中-公开
    多个近场传感器(NFTS)

    公开(公告)号:WO2016191707A1

    公开(公告)日:2016-12-01

    申请号:PCT/US2016/034709

    申请日:2016-05-27

    Abstract: Devices having air bearing surfaces (ABS), the devices including a near field transducer (NFT) that includes a disc configured to convert photons incident thereon into plasmons; and a peg configured to couple plasmons coupled from the disc into an adjacent magnetic storage medium, wherein at least one of a portion of the peg, a portion of the disc, or a portion of both the peg and the disc include a multilayer structure including at least two layers including at least one layer of a first material and at least one layer of a second material, wherein the first material and the second material are not the same and wherein the first and the second materials independently include aluminum (Al), antimony (Sb), bismuth (Bi), boron (B), barium (Ba), calcium (Ca), cerium (Ce), chromium (Cr), cobalt (Co), copper (Cu), erbium (Er), gadolinium (Gd), gallium (Ga), germanium (Ge), gold (Au), hafnium (Hf), indium (In), iridium (Ir), iron (Fe), lanthanum (La), magnesium (Mg), manganese (Mn), molybdenum (Mo), nickel (Ni), niobium (Nb), osmium (Os), palladium (Pd), platinum (Pt), rhenium (Re), rhodium (Rh), ruthenium (Ru), scandium (Sc), silicon (Si), silver (Ag), strontium (Sr), tantalum (Ta), thorium (Th), tin (Sn), titanium (Ti), vanadium (V), tungsten (W), ytterbium (Yb), yttrium (Y), zirconium (Zr), or combinations thereof.

    Abstract translation: 具有空气轴承表面(ABS)的装置,所述装置包括近场换能器(NFT),所述近场换能器包括配置成将入射到其上的光子转换成等离子体的盘; 以及钉构造成将从所述盘耦合的等离子体信号耦合到相邻的磁存储介质中,其中所述钉的一部分,所述盘的一部分或所述钉和盘的一部分中的至少一个包括多层结构,所述多层结构包括 至少两层,包括至少一层第一材料和至少一层第二材料,其中所述第一材料和所述第二材料不相同,并且其中所述第一和第二材料独立地包括铝(Al), 锑(锑),铋(Bi),硼(B),钡(Ba),钙(Ca),铈(Ce),铬(Cr) 钆(Gd),镓(Ga),锗(Ge),金(Au),铪(Hf),铟(In),铱(Ir),铁(Fe),镧(La) 锰(Mo),镍(Ni),铌(Nb),锇(Os),钯(Pd),铂(Pt),铼(Re),铑(Rh),钌(Ru) 钪(Sc),硅(Si),银(Ag),锶(S r),钽(Ta),钍(Th),锡(Sn),钛(Ti),钒(V),钨(W),镱(Yb),钇(Y),锆(Zr) 它们。

    NEAR FIELD TRANSDUCERS (NFTS) INCLUDING BARRIER LAYER AND METHODS OF FORMING
    7.
    发明申请
    NEAR FIELD TRANSDUCERS (NFTS) INCLUDING BARRIER LAYER AND METHODS OF FORMING 审中-公开
    包括障碍层的近场传感器(NFTS)和形成方法

    公开(公告)号:WO2016191666A1

    公开(公告)日:2016-12-01

    申请号:PCT/US2016/034615

    申请日:2016-05-27

    CPC classification number: G11B5/6088 G11B5/314 G11B5/3163 G11B2005/0021

    Abstract: Devices having an air bearing surfaces (ABS), the devices including a near field transducer (NFT) that includes a disc having a front edge; a peg, the peg having a front surface at the air bearing surface of the apparatus, an opposing back surface, a top surface that extends from the front surface to the back surface, two side surfaces that expend from the front surface to the back surface and a bottom surface that extends from the front surface to the back surface; and a barrier layer, the barrier layer separating at least the back surface of the peg from the disc and the barrier layer having a thickness from 10 nm to 50 nm.

    Abstract translation: 具有空气轴承表面(ABS)的装置,所述装置包括近场传感器(NFT),其包括具有前缘的盘; 栓钉,该钉在设备的空气支承表面具有前表面,相对的后表面,从前表面延伸到后表面的顶表面,从前表面延伸到后表面的两个侧表面 以及从前表面延伸到后表面的底表面; 和阻挡层,所述阻挡层至少将所述钉的后表面与所述盘分离,并且所述阻挡层具有10nm至50nm的厚度。

    MAGNETIC DEVICES INCLUDING FILM STRUCTURES
    8.
    发明申请
    MAGNETIC DEVICES INCLUDING FILM STRUCTURES 审中-公开
    包括电影结构的磁性装置

    公开(公告)号:WO2014205040A1

    公开(公告)日:2014-12-24

    申请号:PCT/US2014/042878

    申请日:2014-06-18

    Abstract: A device including a magnetic structure, the magnetic structure having a substrate adjacent surface and a second, opposing surface, the magnetic structure having a near field transducer (NFT), wherein the NFT includes gold or an alloy thereof, and is positioned at the second surface an overcoat structure; and a film structure, the film structure positioned between the magnetic structure and the overcoat structure, the film structure having a total thickness of not greater than about 100 A, and the film structure including: a first interfacial structure having a first and a second opposing surface; a second interfacial structure having a first and a second opposing surface; and an intermediate structure wherein the first surface of the first interfacial structure is positioned adjacent the NFT of the magnetic structure, and the second surface of the second interfacial structure is positioned adjacent the overcoat structure, and the intermediate structure is positioned between the first interfacial structure and the second interfacial structure, and wherein the first interfacial structure includes one or more rare earth elements, one or more alkaline earth metals, one or more alkali metals, or a combination thereof.

    Abstract translation: 一种包括磁性结构的装置,具有基板相邻表面的磁性结构和具有近场换能器(NFT)的磁性结构的第二相对表面,其中NFT包括金或其合金,并且位于第二 表面涂层结构; 以及膜结构,所述膜结构位于所述磁性结构和所述外涂层结构之间,所述膜结构的总厚度不大于约100A,并且所述膜结构包括:第一界面结构,其具有第一和第二相对 表面; 具有第一和第二相对表面的第二界面结构; 以及中间结构,其中所述第一界面结构的第一表面位于所述磁性结构的NFT附近,并且所述第二界面结构的所述第二表面位于所述外涂层结构附近,并且所述中间结构位于所述第一界面结构 和第二界面结构,其中第一界面结构包括一种或多种稀土元素,一种或多种碱土金属,一种或多种碱金属或其组合。

    垂直磁気記録媒体の評価方法及び垂直磁気記録媒体の製造方法
    10.
    发明申请
    垂直磁気記録媒体の評価方法及び垂直磁気記録媒体の製造方法 审中-公开
    全磁记录介质的评估方法和全磁记录介质的制造方法

    公开(公告)号:WO2011004700A1

    公开(公告)日:2011-01-13

    申请号:PCT/JP2010/060525

    申请日:2010-06-22

    Inventor: 齋藤 智代

    Abstract: 【課題】よりいっそうの高記録密度化に対応可能な垂直磁気記録媒体を得るために好適な垂直磁気記録媒体の特性評価方法を提供する。 【解決手段】垂直磁気記録媒体に任意の第1の位置で特定周波数の第1の信号を記録する工程と、前記第1の信号の再生出力を測定し、再生出力が最大となるピーク位置における第1の信号の信号対ノイズ比(初期の値)を測定する工程と、第1の位置から垂直磁気記録媒体の半径方向に所定距離離れた第2の位置に特定周波数の信号を記録する工程と、再度前記ピーク位置における第1の信号の信号対ノイズ比を測定する工程と、前記第2の位置から第1の位置方向に所定距離近づけた位置に特定周波数の信号を記録し、再度前記ピーク位置における第1の信号の信号対ノイズ比を測定する工程を第2の位置から第1の位置方向に順次近づけながら繰り返す工程と、信号対ノイズ比の値が初期の値よりも所定範囲以上低下したかどうかを判断する工程とを含む垂直磁気記録媒体の評価方法である。

    Abstract translation: 一种用于评估适于获得适于增加记录密度的垂直磁记录介质的垂直磁记录介质的特性的方法。 垂直磁记录介质的评估方法包括:在垂直磁记录介质上的任意第一位置记录特定频率的第一信号的步骤; 测量第一信号的再现输出并测量在再现输出变得最大的峰值位置处的第一信号的信噪比(默认值)的步骤; 在与第一位置分离的第二位置处,在垂直磁记录介质的径向上记录特定频率的信号预定距离的步骤; 用于再次测量峰值位置处的第一信号的信噪比的步骤; 重复在距离第二位置更靠近第一位置的位置记录特定频率的信号预定距离的步骤,并再次测量峰值位置处的第一信号的信噪比, 同时从第二位置顺序地接近第一位置的方向; 以及确定所述信噪比相对于所述默认值是否已经降低至少预定范围的步骤。

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