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The crystal structure of Th2Ni17 type magnet

by:Newland     2020-04-23
Th2Ni17 type magnet crystal structure is one of the important types of crystal structure of rare earth permanent magnet material, it belongs to the hexagonal system, space group is about/MMC. A unit cell is composed of two Th2Ni17 molecules, a total of 38 atoms. Two of Th ( Or R) Atom occupies b crystal, the other two magnets. Four f's dumbbell crystal, it is composed of Ni b or Fe atoms to occupy, the equivalent of CaCu5 structure of rare earth on c crystal a Beijing child Go or Ni, Fe atoms of needles in the results. A layer of atomic layer of CaCu5 structure) ; Small circles represent z = 0, an atomic layer Ni or Go or Fe atoms; Black dots represent z: atomic layer of Ni or Go, Fe atoms, the equivalent of a mortar Cu5 Cu atoms in place, equivalent to Ca or R atom occupies in the CaCu5 structure. In the Th2N illusions: by Th atom occupied, but by Ni ( Or Co, Fe) Atoms of ( Called the dumbbell atoms to) The replacement. The two Ni ( Or Go, Fe) Atoms are in position of B2, and directly, leave the distance of the atomic layer for 011. Z = O Withers, but B3 position by Ni ( Or Cb, Fe) Atoms to occupy, and B2, still, h ( Or R) The atoms. A third of Ca (that means CaCu5 structure Or R) J or CoFe) Orderly atoms along a dead axle after replacement, can form Th2Ni17 type structure. Ndfeb magnet has become promote the development of high and new technology and modern civilization irreplaceable materials, development prospect is optimistic. Especially the abnormity motor magnetic tile, develop faster. Combined with metal and rare element mineral deposits are very abundant in our country, with rich raw material resources and natural advantages. Abnormity of the magnet is designed for special product requirements of magnets, abnormity is relative to the standard of the magnet, abnormity of the most widely used for ferrite magnetic material, rubidium iron boron. Such as stator magnetic tile micromotor is alien magnetic materials. Magnets should be far from easy to be magnetized items, such as floppy disks, credit CARDS, computer monitors, watches, mobile phones, medical equipment, etc. The magnet should be far away from the cardiac pacemaker. Larger size magnets, each piece should be added between the plastic or cardboard gasket in place to ensure that can easily separate magnet. Magnet, powerful magnets, special-shaped magnets, magnet manufacturer,
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