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本文研究了Nd_2(Fe_(1-x)M_x)_(14)B的磁性。少量类金属原子C和Si取代部分Fe,能形成四方结构,且具有单轴各向异性。碳取代Fe,使化合物的Curie温度降低,低温下粘结体样品的内禀矫顽力减少;而Si对Fe的取代可使Curie温度升高,并在x=0.15附近达到极大值。含Si样品在0≤x≤0.10范围内,矫顽力显著增加,室温下从x=0的62.7kA/m增加到x=0.06的138.7 kA/m,并且在x=0.06附近,剩磁有一个极值,饱和磁化强度减少不多。
In this paper, the magnetism of Nd_2 (Fe_ (1-x) M_x) _ (14) B has been studied. Small amount of metal atoms C and Si replace part of Fe, can form a tetragonal structure, and has uniaxial anisotropy. The substitution of Fe for carbon reduces the Curie temperature of the compounds, and decreases the intrinsic coercivity of the samples at low temperature. The Si substitution of Fe increases the Curie temperature and reaches a maximum around x = 0.15. The Si-containing samples show a significant increase in coercivity in the range of 0≤x≤0.10, increasing from 62.7kA / m at x = 0 to 138.7 kA / m at x = 0.06 at room temperature, and around x = 0.06, An extreme value, saturation magnetization less reduced.