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1. 发明申请

WO2005045809A2 METHOD AND SYSTEM FOR MAGNETIC RECORDING USING SELF-ORGANIZED MAGNETIC NANOPARTICLES 审中-公开
标题翻译：用于使用自组织磁性纳米颗粒的磁记录方法和系统
公开(公告)号：WO2005045809A2
公开(公告)日：2005-05-19
申请号：PCT/US2003/032173
申请日：2003-10-09
申请人： SEAGATE TECHNOLOGY LLC
发明人： VAN DE VEERDONK, Rene, J., M. , WU, Xiaowei , WELLER, Dieter, K.
IPC分类号： G11B5/00
CPC分类号： B82Y10/00 , G11B5/00 , G11B5/012 , G11B5/02 , G11B5/09 , G11B5/127 , G11B5/17 , G11B5/33 , G11B5/70605 , G11B5/712 , G11B5/74 , G11B5/743 , G11B5/82 , G11B5/855 , G11B11/002 , G11B11/03 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： A method and system (10) for magnetic recording using self-organized magnetic nanoparticles is disclosed. The method may include depositing surfactant coated nanoparticles (18) on a substrate (16), wherein the surfactant coated nanoparticles (18) represent first bits of recorded information. The surfactant coating (22) is then removed from selected of the surfactant coated nanoparticles (20). The selected nanoparticles (20) with their surfactant coating (22) removed may then be designated to represent second bits of recorded information. The surfactant coated nanoparticles (18) have a first saturation magnetic moment and the selected nanoparticles (20) with the surfactant coating (22) removed have a second saturation magnetic moment. Therefore, by selectively removing the surfactant coating (22) from certain nanoparticles (20), a write operation for recording the first and second bits of information may be performed. A read operation may be carried out by detecting the different magnetic moments of the surfactant coated nanoparticles (18) and the non-surfactant coated nanoparticles (20).
摘要翻译：公开了一种使用自组织磁性纳米粒子进行磁记录的方法和系统（10）。该方法可以包括将表面活性剂涂覆的纳米颗粒（18）沉积在基底（16）上，其中表面活性剂涂覆的纳米颗粒（18）代表记录信息的第一位。然后从选择的表面活性剂涂覆的纳米颗粒（20）中除去表面活性剂涂层（22）。然后可以指定去除其表面活性剂涂层（22）的所选纳米颗粒（20）以表示记录信息的第二位。涂覆有表面活性剂的纳米颗粒（18）具有第一饱和磁矩，并且除去表面活性剂涂层（22）的所选纳米颗粒（20）具有第二饱和磁矩。因此，通过从某些纳米颗粒（20）选择性地去除表面活性剂涂层（22），可以执行用于记录第一和第二位信息的写入操作。读取操作可以通过检测表面活性剂涂布的纳米颗粒（18）和非表面活性剂涂布的纳米颗粒（20）的不同磁矩来进行。

2. 发明申请

WO2004001725A1 MULTILAYER MAGNETIC RECORDING MEDIA 审中-公开
标题翻译：多层磁记录介质
公开(公告)号：WO2004001725A1
公开(公告)日：2003-12-31
申请号：PCT/US2003/001235
申请日：2003-01-06
申请人： SEAGATE TECHNOLOGY LLC
发明人： VAN DE VEERDONK, Rene, J. M. , KARNS, Duane, C. , WELLER, Dieter, K. , KUBOTA, Yukiko
IPC分类号： G11B5/66
CPC分类号： G11B5/66
摘要： Multilayer magnetic structures (20) comprising composite layers (22) and spacer layers (24) are disclosed. The composite layers (22) include a discontinuous magnetic phase (26) such as Co, Ni or Fe platelets, and a continuous nonmagnetic phase (28) such as C, AlO x, SiO x , ZrO x , Cu, Ag and Au. The spacer layers (24) may comprise Pt, Pd, Au or the like. The composite layers (22) and spacer layers (24) may be made by sputtering. The multilayer structures (20) are useful as magnetic recording layers of magnetic recording media (10). In one embodiment, the recording media (10) comprises a perpendicular magnetic recording medium including a substrate (12), a soft magnetic underlayer (14), a seed layer (16) and the multilayer structure (20).
摘要翻译：公开了包括复合层（22）和间隔层（24）的多层磁性结构（20）。复合层（22）包括诸如Co，Ni或Fe片晶的不连续磁性相（26）和诸如C，AlO x，SiO x，ZrO x，Cu，Ag和Au的连续非磁性相（28）。间隔层（24）可以包括Pt，Pd，Au等。复合层（22）和间隔层（24）可以通过溅射制成。多层结构（20）可用作磁记录介质（10）的磁记录层。在一个实施例中，记录介质（10）包括垂直磁记录介质，其包括基底（12），软磁性底层（14），种子层（16）和多层结构（20）。

3. 发明申请

WO2003075263A1 CHEMICALLY ORDERED, COBALT-PLATINUM ALLOYS FOR MAGNETIC RECORDING 审中-公开
标题翻译：化学订购用于磁记录的钴 - 铂合金
公开(公告)号：WO2003075263A1
公开(公告)日：2003-09-12
申请号：PCT/US2003/005916
申请日：2003-02-26
申请人： SEAGATE TECHNOLOGY LLC
发明人： LU, Bin , WELLER, Dieter, K.
IPC分类号： G11B5/64
CPC分类号： G11B5/656 , C23C14/3464 , C23C14/352 , G11B5/82 , G11B5/851 , Y10T428/24777
摘要： A magnetic recording layer having polycrystalline chemical ordered (CoX)3Pt or (CoX)3PtY alloys. The additive X comprises Sc, Ti, V, Cr, Mn, Ni, Cu, Zn, Ga, Ge, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Hf, Ta, W, Re, Os, B, or C, or any combination thereof. The additive Y comprises B, MgO, Al2O3, SiO2, P, CaO,CoO, B2O3, ZnO, NbO, Mo2O3, Co2O3, C, Cr, P, TiO2, Cr2O3, MnO, ZrO2, or BaO. The ratio z of (CoX) to Pt is 2.33 to 4.00, The additive Y may range from approximately 0 to 20% of the entire composition. The magnetic layer may be a constituent layer in a hard disc drive magnetic recording medium.
摘要翻译：具有多晶化学有序（CoX）3Pt或（CoX）3PtY合金的磁记录层。添加剂X包括Sc，Ti，V，Cr，Mn，Ni，Cu，Zn，Ga，Ge，Nb，Mo，Ru，Rh，Pd，Ag，Cd，In，Sn，Hf，Ta， Os，B或C，或其任何组合。添加剂Y包括B，MgO，Al2O3，SiO2，P，CaO，CoO，B2O3，ZnO，NbO，Mo2O3，Co2O3，C，Cr，P，TiO2，Cr2O3，MnO，ZrO2或BaO。（CoX）与Pt的比率z为2.33〜4.00，添加剂Y的范围为整个组合物的约0〜20％。磁性层可以是硬盘驱动器磁记录介质中的构成层。

4. 发明申请

WO2004105985A1 SYNTHESIS OF IRON-BASED ALLOY NANOPARTICLES 审中-公开
标题翻译：基于铁的合金纳米粒子的合成
公开(公告)号：WO2004105985A1
公开(公告)日：2004-12-09
申请号：PCT/US2003/017005
申请日：2003-05-29
申请人： SEAGATE TECHNOLOGY LLC
发明人： LIU, Chao , YANG, Xiaomin , WELLER, Dieter, K.
IPC分类号： B22F9/24
CPC分类号： C22C33/0278 , B22F1/0018 , B22F9/24 , B22F2998/00 , B82Y30/00 , C22C1/0466 , C23C18/50 , G11B5/70615 , G11B5/8416 , B22F1/0085
摘要： A method of forming iron-based alloy nanoparticles is disclosed. A solution containing iron salt, noble metal salt and a reducing reagent is heated, resulting in the precipitation of monodispersed nanoparticles such as FePt and FePd. The solution may also include a surfactant. After deposition, the iron-based alloy nanoparticles may be annealed in order to produce the desired crystal structure and magnetic properties. The annealed nanoparticles may comprise FePt having an L1 0 crystal structure and high magnetic coercivity. The magnetic iron-based nanoparticles are suitable for use in applications such as magnetic recording media, permanent magnet materials and magneto-transport systems.
摘要翻译：公开了一种形成铁基合金纳米颗粒的方法。含有铁盐，贵金属盐和还原剂的溶液被加热，导致单分散纳米颗粒例如FePt和FePd的沉淀。该溶液还可以包括表面活性剂。沉积后，铁基合金纳米颗粒可以退火以产生所需的晶体结构和磁性。退火的纳米颗粒可以包含具有L10晶体结构和高矫顽磁力的FePt。磁性铁基纳米粒子适用于磁记录介质，永磁材料和磁传输系统等应用。

5. 发明申请

WO2004032121A1 INTERMEDIATE LAYER FOR PERPENDICULAR MAGNETIC RECORDING MEDIA 审中-公开
标题翻译：中间磁记录介质的中间层
公开(公告)号：WO2004032121A1
公开(公告)日：2004-04-15
申请号：PCT/US2003/016758
申请日：2003-05-29
申请人： SEAGATE TECHNOLOGY LLC
发明人： LU, Bin , WELLER, Dieter, K.
IPC分类号： G11B5/66
CPC分类号： G11B5/732 , G11B5/656 , G11B5/66 , G11B5/667 , G11B5/7325
摘要： A perpendicular magnetic recording medium (16) includes a hard magnetic recording layer (42), a soft magnetic layer (40) and a non-magnetic intermediate layer (50) between the hard magnetic recording layer (42) and the soft magnetic layer (40). The non-magnetic intermediate layer (50) comprises a seedlayer (52) formed adjacent the soft magnetic layer (40) and an underlayer (54) formed between the seedlayer (52) and hard magnetic recording layer (42). The underlayer (54) comprises Ru or CrRu. The seedlayer (52) comprises CoCrRu, CoCr, W, Ta, Mo, Hf, or Ti. The non-magnetic intermediate layer (50) provides a means for inducing a substantially (00.2) orientation in the hard magnetic recording layer (42).
摘要翻译：垂直磁记录介质（16）包括在硬磁记录层（42）和软磁层（42）之间的硬磁记录层（42），软磁层（40）和非磁中间层（50） 40）。非磁性中间层（50）包括邻近软磁层（40）形成的种子层（52）和形成在种层（52）和硬磁记录层（42）之间的底层（54）。底层（54）包括Ru或CrRu。种子层（52）包括CoCrRu，CoCr，W，Ta，Mo，Hf或Ti。非磁性中间层（50）提供了用于在硬磁记录层（42）中诱导基本（00.2）取向的装置。

6. 发明申请

WO2004003945A1 INCREASED PACKING DENSITY IN SELF-ORGANIZED MAGNETIC ARRAY 审中-公开
标题翻译：自组织磁阵列中增加的包装密度
公开(公告)号：WO2004003945A1
公开(公告)日：2004-01-08
申请号：PCT/US2003/004620
申请日：2003-02-13
申请人： SEAGATE TECHNOLOGY LLC
发明人： WELLER, Dieter, K. , LIU, Chao , KLEMMER, Timothy, J.
IPC分类号： H01F1/00
CPC分类号： B82Y25/00 , B82Y40/00 , G11B5/65 , G11B5/712 , G11B5/842 , H01F1/0054 , H01F1/009 , H01F10/123 , H01F10/32 , H01F41/30 , Y10T428/265
摘要： A self-organized magnetic array includes a plurality of magnetic primary nanoparticles (122) are arranged on the substrate (152) in a self-organized magnetic array. A plurality of magnetic interstitial nanoparticles (170) are positioned between at least some of the primary nanoparticles (122) in the self-organized magnetic array. A method of making such an array is also provided.
摘要翻译：自组织磁阵列包括以自组织磁阵列布置在衬底（152）上的多个磁性初级纳米颗粒（122）。多个磁性间质纳米颗粒（170）位于自组织磁阵列中的至少一些初级纳米颗粒（122）之间。还提供了制造这种阵列的方法。

7. 发明申请

WO2002082431A2 PERPENDICULAR MAGNETIC RECORDING HEAD WITH SOFT UNDERLAYER BIASING 审中-公开
标题翻译：具有软底板偏心的全磁性记录头
公开(公告)号：WO2002082431A2
公开(公告)日：2002-10-17
申请号：PCT/US2002/009958
申请日：2002-03-28
申请人： SEAGATE TECHNOLOGY LLC
发明人： SEIGLER, Michael, A. , WELLER, Dieter, K. , ROTTMAYER, Robert, E.
IPC分类号： G11B5/00
CPC分类号： G11B5/1278 , G11B5/03 , G11B2005/001 , G11B2005/0016 , G11B2005/0029
摘要： A perpendicular magnetic recording head 22 includes a read head having means for generating a magnetic field which reduces noise from a soft magnetic underlayer 40 of a recording medium 16 during operation of the recording head 22. The means for generating a magnetic field includes a current perpendicular to the plane read sensor 46 of the read head 34. The electrical current generates a magnetic field which biases the magnetization of the soft magnetic underlayer 40. By controlling the amount of current or current density that is passed through the read sensor 46, the magnitude of the magnetic field for biasing the soft magnetic underlayer 40 may be controlled. A method of using a perpendicular magnetic recording head 22 to magnetically bias a soft magnetic underlayer 40 of a recording medium 16 is also disclosed.
摘要翻译：垂直磁记录头22包括具有用于产生磁场的读取头，该磁场在记录头22的操作期间减小来自记录介质16的软磁底层40的噪声。用于产生磁场的装置包括电流垂直到读取头34的平面读取传感器46.电流产生偏置软磁性底层40的磁化的磁场。通过控制通过读取传感器46的电流或电流密度的量，可以控制用于偏压软磁性底层40的磁场。还公开了使用垂直磁记录头22对记录介质16的软磁底层40进行磁偏置的方法。

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