含钴Fe_3O_4。磁特性的改善方法是将材料在饱和磁场下按规定方向进行磁化,当除去磁场时,材料将保留一定的磁化强度通常称之为剩余磁化强度,简称剩磁、随后将次材料加热进行退火处理,上述过程,有效地提高了材料的矫顽力,磁带迴线矩形比,以及加压减磁的阻抗。 Cobalt-containing Fe_3O_4. Magnetism is improved by magnetizing the material in a specified direction under a saturated magnetic field. When the magnetic field is removed, the material retains a certain degree of magnetization, commonly referred to as remanent magnetization, referred to as remanence for short, and then the secondary material is heated for annealing The above process effectively increases the coercivity of the material, the loop squareness of the tape, and the impedance of the pressurization and demagnetization.