GOLD OR SILVER PARTICLES WITH PARAMAGNETISM, AND COMPOSITION CONTAINING THEREOF
    3.
    发明公开
    GOLD OR SILVER PARTICLES WITH PARAMAGNETISM, AND COMPOSITION CONTAINING THEREOF 审中-公开
    金或银颗粒PARA与磁场成分含有它们的

    公开(公告)号:EP1799176A1

    公开(公告)日:2007-06-27

    申请号:EP05764929.5

    申请日:2005-04-01

    发明人: KIM, Young-Nam

    IPC分类号: A61K6/00

    摘要: The present invention is related to gold or silver powder characterized by having paramagnetism. In more detail, contrary to the conventional gold or silver powder known to be a diamagnetic material having magnetism in the opposite direction to that of the magnetic field in the external magnetic field, the gold or silver powder according to the present invention is characterized by being a paramagnetic gold or silver powder having magnetism in the same direction as that of the external magnetic field, i.e., in the positive direction, in all temperature ranges, which is further characterized by having saturated magnetic moment with the external magnetic field, H, of 2,000 to 8,000 Oe. The paramagnetic gold or silver powder according to the present invention is also characterized by that inclination dM/dH of the mass magnetism curve is positive at an absolute temperature of 20K with the external magnetic field, H, of greater than 1,000 Oe. The paramagnetic gold or silver powder according to the present invention shows an extremely small coercive force, has no surface oxidation layers, is stable at a room temperature, has no cohesive property, and is highly dispersible. Owing to these characteristics, the gold or silver powder according to the present invention may be used for various material areas.

    LOW TEMPERATURE SUSCEPTIBILITY COMPENSATION
    10.
    发明公开
    LOW TEMPERATURE SUSCEPTIBILITY COMPENSATION 有权
    低温敏感性补偿

    公开(公告)号:EP1668655A2

    公开(公告)日:2006-06-14

    申请号:EP04782801.7

    申请日:2004-08-31

    申请人: Varian, Inc.

    IPC分类号: H01F1/42 G01R33/38

    摘要: An composition exhibiting a desired value of magnetic susceptibility, which can be used to fabricate components in an NMR device, and method thereof, wherein the composition comprises a metal ion selected from the group consisting of Gd+3 , Fe+3 and Mn+2 and an amorphous material using a ligand or chelating agent to solubilize the metal ion throughout the amorphous material, wherein the magnetic susceptibility of the composition exhibits a desired value at cryogenic temperatures such as nearly zero susceptibility at temperatures at or below 770 K.