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    • 1. 发明申请
    • METHOD FOR CONTROLLING THE SHAPE OF SYNTHESIS PARTICLES AND FOR PRODUCING MATERIALS AND DEVICES CONTAINING ORIENTED ANISOTROPIC PARTICLES AND NANOSTRUCTURES
    • 用于控制合成颗粒的形状和用于生产包含定向的各向异性颗粒和纳米结构的材料和装置的方法
    • WO00015545A1
    • 2000-03-23
    • PCT/RU1999/000091
    • 1999-03-30
    • B82B3/00B22F9/30G11B5/62G11B5/845H01F1/00H01F41/30
    • B82Y25/00B82Y10/00B82Y40/00G11B5/62H01F1/0045H01F1/0072H01F41/30
    • The present invention relates to a method for controlling the shape of synthesis particles and for producing materials and devices containing extended and oriented nanostructures, wherein said method comprises a plurality of processes that involve shaping and growing particles under the action of external electric and magnetic fields. This method is used for producing discrete, metal-containing magnetic particles, including metallic amorphous ones, having a shape that can be modified in a predetermined manner. The particles are thus modified from a spherical or disc shape into an anisotropic, ellipsoidal and acicular shape with characteristic dimensions ranging from one to several hundreds of nanometers. This method is also used for producing chain clusters of particles. It is also possible to produce oriented, metallic and thread-shaped nanostructures (nanotubes) having a cross-sectional diameter of approximately 10 nm or less, as well as mono- or multi-layered systems on a solid substrate. This method can be used in the production of metallo-polymeric materials, including thin-film ones, which are used for the production of functional elements in electronics, nanotechnologies, electrical engineering as well as in optics and non-linear optics systems and devices. This method can further be used for the production of new magnetic memory elements and magnetic information carriers, as well as in the production of colloidal particles used in magnetic and magneto-rheologic fluids and in the production of absorbent protective coatings.
    • 本发明涉及一种用于控制合成颗粒形状和用于生产含有延伸和定向纳米结构的材料和装置的方法,其中所述方法包括在外部电场和磁场的作用下成形和生长颗粒的多个方法。 该方法用于生产具有可以预定方式修饰的形状的离散的含金属磁性颗粒,包括金属非晶体磁性颗粒。 因此,颗粒从球形或盘状变为各向异性,椭圆形和针状,其特征尺寸范围为一至几百纳米。 该方法也用于生产颗粒链簇。 还可以生产具有约10nm或更小的截面直径的取向的金属和线形纳米结构(纳米管),以及固体基底上的单层或多层系统。 该方法可用于生产包括薄膜的金属 - 聚合物材料,其用于生产电子学,纳米技术,电气工程以及光学和非线性光学系统和器件中的功能元件。 该方法可以进一步用于生产新的磁存储元件和磁信息载体,以及用于磁性和磁流变流体中使用的胶体颗粒的生产以及生产吸收性保护涂层。
    • 3. 发明申请
    • A METHOD OF MANUFACTURING FLEXIBLE MAGNETIC TAPE
    • 一种制造柔性磁带的方法
    • WO01022411A1
    • 2001-03-29
    • PCT/GB2000/003634
    • 2000-09-22
    • G11B5/70G06K19/06G06K19/12G11B5/84G11B5/845G11B5/85G11B5/852
    • G11B5/852G06K19/06G06K19/12
    • A method of manufacturing flexible magnetic tape having a permanently structured magnetic characteristic which varies from place to place in two different directions in the plane of the tape, includes: a) coating a flexible substrate with a slurry comprising anisotropic magnetic particles; b) moving the substrate and slurry coating relative to a first magnetic field having a field strength which varies with time in a first direction, thereby selectively orienting the said particles in areas spaced apart in a first direction; c) subsequently moving the substrate and slurry coating relative to a second magnetic field having a field strength which varies with time in a second direction making an oblique angle with the first direction, such that the said magnetic particles are selectively oriented in spaced areas in both said first and said further directions, and d) solidifying the slurry to fix the said particles in place.
    • 一种制造具有永久结构的磁特性的柔性磁带的方法,其特征在于,在磁带的平面中,沿着两个不同方向的位置不同,包括:a)用包含各向异性磁性颗粒的浆料涂覆柔性基板; b)相对于具有在第一方向上随时间变化的场强的第一磁场移动衬底和浆料涂层,从而在所述第一方向上间隔开的区域中选择性地定向所述颗粒; c)随后相对于具有随第一方向倾斜的第二方向随时间变化的场强的第二磁场移动衬底和浆料涂层,使得所述磁性颗粒选择性地定向在两个 所述第一和所述另外的方向,以及d)固化所述浆料以将所述颗粒固定在适当位置。
    • 8. 发明申请
    • A MAGNETIC RECORDING MEDIUM
    • 磁记录介质
    • WO99000766A1
    • 1999-01-07
    • PCT/GB1998/001829
    • 1998-06-22
    • B42D15/10G06K19/06G11B5/70G11B5/706G11B5/845G11B5/852
    • G11B5/70G06K19/06196G11B5/852
    • A magnetic recording medium comprises a layer of material including permanently aligned acicular magnetic particles having a first coercivity, and magnetic particles having a further coercivity higher than the first. The ratio of the volume per unit area of particles having said first coercivity to the volume per unit area of particles having said further coercivity is preferably between 3.4:6.6 and 5.5:4.5, and the particles having the further coercivity preferably comprise either barium ferrite or strontium ferrite platelets. The layer may be carried by a flexible substrate thereby forming a tape which can simultaneously record data permanently by means of the acicular particles and erasably by means of the particles having the further coercivity. The layer is manufactured using a slurry containing a mixture of the two types of particle, and a two stage alignment process.
    • 磁记录介质包括一层材料,包括具有第一矫顽力的永久排列的针状磁性颗粒和具有高于第一矫顽力的矫顽力的磁性颗粒。 具有所述第一矫顽力的颗粒的每单位面积的体积与具有所述其他矫顽力的每单位面积的体积的比例优选在3.4:6.6和5.5:4.5之间,并且具有进一步矫顽力的颗粒优选包含钡铁氧体或 锶铁素体血小板。 该层可以由柔性基底承载,从而形成带,其可以通过针状颗粒永久地记录数据,并通过具有进一步矫顽力的颗粒可擦除地记录数据。 该层使用含有两种类型的颗粒的混合物的浆料和两阶段对准方法制造。
    • 9. 发明申请
    • MAGNETIC RECORDING MEDIUM, PRODUCTION METHOD THEREOF AND MAGNETIC RECORDING AND READING DEVICE USING THE SAME
    • 磁记录介质,其制造方法及其磁记录和读取装置
    • WO2008139597A1
    • 2008-11-20
    • PCT/JP2007/059787
    • 2007-05-01
    • OGAWA, Kazufumi
    • OGAWA, Kazufumi
    • G11B5/70G11B5/712G11B5/716G11B5/738G11B5/842G11B5/845
    • G11B5/712G11B5/716G11B5/842
    • A magnetic recording medium is produced by: a step for contacting the surface of a medium substrate to a chemisorbent solution produced by mixing an alkoxysilane compound, a silanol condensing catalyst and a non-aqueous solvent, reacting the surface of the medium substrate with the alkoxysilane compound and forming the first reactive organic film on the surface of the medium substrate; a step for dispersing the magnetic particulate into the chemisorbent solution produced by mixing a second alkoxysilane compound, a silanol condensing catalyst and a non-aqueous solvent, reacting the surface of the magnetic particulates with the alkoxysilane compound and forming a second reactive organic film on the surface of the magnetic particulates; a step for contacting the surface of the medium substrate having the first reactive organic film with the magnetic particulate covered with the second reactive organic film and reacting those films; and a step for washing and removing the excess magnetic particulates.
    • 磁记录介质是通过以下步骤制造的:用于使介质基板的表面接触通过混合烷氧基硅烷化合物,硅烷醇缩合催化剂和非水溶剂而制备的化学吸附剂溶液的步骤,使介质基材的表面与烷氧基硅烷 在介质基材的表面上形成第一反应性有机膜; 将磁性颗粒分散到通过混合第二烷氧基硅烷化合物,硅烷醇缩合催化剂和非水溶剂而产生的化学吸附剂溶液中的步骤,使磁性颗粒的表面与烷氧基硅烷化合物反应并在其上形成第二反应性有机膜 磁性颗粒表面; 使具有第一反应性有机膜的介质基板的表面与被第二反应性有机膜覆盖的磁性颗粒接触并使这些膜反应的步骤; 以及洗涤和除去过量磁性颗粒的步骤。