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15 条记录 (耗时 0.01 秒)

    Method of making a magnetic recording medium
    1.
    发明授权
    Method of making a magnetic recording medium 失效
    制作磁记录介质的方法

    公开(公告)号：US3703411A

    公开(公告)日：1972-11-21

    申请号：US3703411D

    申请日：1968-04-22

    申请人： CORNING GLASS WORKS

    发明人： MELEZOGLU CEVDET

    IPC分类号： H01F10/20 ,  H01F10/28 ,  H01F10/02 ,  H01F10/04

    CPC分类号： H01F10/20 ,  H01F10/28

    摘要： A METHOD OF MAKING A MAGNETIC RECORDING MEDIUM OR MEDIA COMPRISING THE STEPS OF PROVIDING A SUBSTRATE OR SUPPORT MEMBER OF A VITREOUS MATERIAL SUCH AS A GLASS OR GLASS-CERAMIC IN THE FORM OF A TAPE, DISK OR CYLINDER, HEATING SUCH SUPPORT MEMBER, SPRAYING A SURFACE OF THE HEATED MEMBER WITH A SOLUTION OF FERRIC CHLORIDE TO FORM THEREON A COATING OR FILM OF FERRIC OXIDE HAVING MAGNETIC PROPERTIES. IF ONLY ALPHA FERRIC OXIDE IS FORMED ON SAID SURFACE THE SUPPORT MEMBER MAY BE SUBJECTED TO A REDUCING ATMOSPHERE AT ELEVATED TEMPERATURES TO CHANGE THE COATING TO MAGNETITE. IT IS PREFERABLE TO THEREAFTER SUBJECT SAID SUPPORT MEMBER TO AN OXIDIZING ATOSPHERE AT ELEVATED TEMPERATURES TO CHANGE SAID COATING TO GAMMA FERRIC OXIDE.

    Magnetic element using isolated domains in rare earth orthoferrites
    4.
    发明授权
    Magnetic element using isolated domains in rare earth orthoferrites 失效
    在罕见地球中使用分离域的磁性元件

    公开(公告)号：US3647538A

    公开(公告)日：1972-03-07

    申请号：US3647538D

    申请日：1968-02-05

    申请人： BELL TELEPHONE LABOR INC

    发明人： WOLFE RAYMOND

    IPC分类号： G11C19/08 ,  H01F10/22 ,  H01F10/02 ,  H01F10/04

    CPC分类号： H01F10/22 ,  G11C19/08

    摘要： The disclosure describes a structure useful for isolated magnetic domain devices. The structure is a composite of samarium-rich orthoferrite and samarium-poor orthoferrite one of which is epitaxially deposited on the other. The result is that the epitaxial layer is magnetically isolated from the substrate since in these materials the crystallographic direction of net magnetic moment is 90* apart.

    摘要翻译： 本公开描述了对于隔离的磁畴器件有用的结构。 该结构是富含钐的正铁氧体和无钐的正铁氧体的复合材料，其中一个外延地沉积在另一个上。 结果是外延层与衬底磁隔离，因为在这些材料中，净磁矩的结晶方向相差90°。

    Process of preparing transparent colored magnetic materials
    5.
    发明授权
    Process of preparing transparent colored magnetic materials 失效
    制备透明色磁性材料的工艺

    公开(公告)号：US4150173A

    公开(公告)日：1979-04-17

    申请号：US710537

    申请日：1976-08-02

    申请人： Ronald F. Ziolo

    发明人： Ronald F. Ziolo

    IPC分类号： G03G9/08 ,  G03G9/083 ,  H01F1/06 ,  H01F10/04

    CPC分类号： G03G9/083 ,  G03G9/0825 ,  G03G9/0832 ,  G03G9/0833 ,  G03G9/0837 ,  H01F1/063

    摘要： Transparent colored materials having low bulk densities and high magnetic permeabilities are obtained by encasing silicaceous particles in a sheath of magnetic or magnetically-attractable metal, which are then heat-treated. The magnetic composite particles are prepared by the solution phase thermal decomposition of transition metal carbonyls in the presence of the silicaceous particles with a suitable suspending medium. Air and moisture are excluded from the reaction vessel and the contents are heated with agitation so that the carbonyl boils and the mixture is refluxed until the temperature rises to that of the suspending medium whereupon coating of the silicaceous particles with elemental metal is complete. The mixture is cooled, the beads washed, air-dried, and recovered. The metal coated particles are then heated in an ambient atmosphere for between about 2 to about 120 minutes at a temperature of from between about 50.degree. C. and 700.degree. C. Particles having transparency, color, and magnetism in the same body are obtained.

    摘要翻译： 通过将硅质颗粒包裹在磁性或磁性吸引金属的护套中，然后进行热处理，可获得具有低堆积密度和高磁导率的透明有色材料。 在具有合适的悬浮介质的硅质颗粒存在下，通过溶解相热分解过渡金属羰基来制备磁性复合颗粒。 将空气和水分从反应容器中排除，并将内容物搅拌加热，使得羰基沸腾并将混合物回流直到温度升高至悬浮介质的温度，随后用元素金属涂覆硅质颗粒。 将混合物冷却，洗涤珠子，空气干燥并回收。 然后将金属涂覆的颗粒在环境气氛中在约50℃至700℃的温度下加热约2至约120分钟。获得在同一体内具有透明度，颜色和磁性的颗粒。

    Laminated magnetic recording element
    6.
    发明授权
    Laminated magnetic recording element 失效
    层压磁记录元件

    公开(公告)号：US3634185A

    公开(公告)日：1972-01-11

    申请号：US3634185D

    申请日：1968-11-04

    申请人： EASTMAN KODAK CO

    发明人： FABER JAN WILLEM HENDRIK

    IPC分类号： C08G63/199 ,  G11B5/702 ,  H01F10/02 ,  H01F10/04

    CPC分类号： G11B5/7023 ,  C08G63/199 ,  Y10S428/90 ,  Y10T428/31507

    摘要： This invention relates to a support having coated thereon a layer comprising a condensation interpolymer of (a) a monocyclic or fused ring dibasic aromatic carboxylic acid, (b) a 1,3cycloalkyl dicarboxylic acid and (c) an aliphatic diol, said condensation polymer comprising at least 15 mole percent (b).

    摘要翻译： 本发明涉及一种其上涂覆有包含（a）单环或稠环二元芳族羧酸，（b）1,3-环烷基二羧酸和（c）脂肪族二醇）的缩合互聚物的层的载体，所述缩合 包含至少15摩尔％（b）的聚合物。