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在０．０００１－２．４ＧＰａ流体静压力范围详细研究了非晶（Ｆｅ＿ｘＣｏ＿ｘ）＿（７７．５）Ｎｄ＿４Ｂ＿（１８．５）（０≤ｘ≤１．０）合金的电阻率与压力的关系，得到该非晶合金电阻率的压力系数随组分ｘ变化的规律。结果表明：用少量的钴（ｘ＝０．２）替代铁，不会影响其硬磁性和热稳定性，同时却可减小电阻率的压力系数，从而增强电磁性能在压力下的稳定性。此外还观测到在０．５１ＧＰａ保压３－２４ｂ的结构弛豫，进一步求出该非晶台金电阻率的压力弛豫时间对组分ｘ的依赖关系。
The relationship between the resistivity and the pressure of the amorphous (Fe_xCo_x) _ (77.5) Nd_4B_ (18.5) (0≤x≤1.0) alloy was investigated in detail in the hydrostatic pressure range of 0.0001-2.4 GPa. The pressure coefficient of resistivity of the amorphous alloy with composition x is obtained. The results show that the substitution of iron with a small amount of cobalt (x = 0.2) will not affect the hard magnetic and thermal stability, but at the same time it will reduce the pressure coefficient of the resistivity and thus enhance the stability of the electromagnetic property under pressure. In addition, the structure relaxation of 3-24b at 0.51GPa was also observed, and the dependence of the pressure relaxation time on the composition x was further obtained.