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在磁场下,采用振动样品磁强计和电阻抗测试仪来研究加入 0%,5% 和 10%(质量分数)的硬磁钐钴的钴银合金在矫顽场不变的情况下,颗粒状复合材料的剩余磁化强度伴随钐钴质量分数的增加而增加。在 10 kHz~100 kHz 区间,各复合材料的电阻抗均未表现大的变化。但是,在 200 kHz~1 MHz 区间,由于趋肤效应,电阻抗迅速增加。当磁场为 3.3 kA/m,所有的阻抗谱都发生了微移。其中,未加钐钴的钴银合金阻抗谱发生了最大的偏移。这些结果确定了在磁场下材料软磁特性与其电阻抗的关系。
Under the magnetic field, using the vibrating sample magnetometer and electrical impedance tester to study the addition of 0%, 5% and 10% (mass fraction) of the hard magnetic samarium cobalt cobalt silver alloy in the case of coercive field, the particles The remanent magnetization of the composites increases with the increase of the mass fraction of SmCo. In the range of 10 kHz to 100 kHz, the electrical impedance of the composites showed no significant change. However, in the 200 kHz to 1 MHz range, the electrical impedance increases rapidly due to the skin effect. When the magnetic field is 3.3 kA / m, all impedance spectra are slightly shifted. Among them, the samarium-cobalt-free cobalt-silver alloy impedance spectra of the largest shift occurred. These results confirm the relationship between the soft magnetic properties of a material and its electrical impedance under a magnetic field.