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测量了非晶态Fe_(90-x)Co_xZr_(10)和Fe_(90-y)Cr_yZr_(10)合金的热膨胀曲线和磁性,给出了自发体积磁致伸缩ω_s和平均原子磁矩μ与有效电子数n_(eff)的关系,实验结果表明,ω_s的峰值位置与μ开始急剧下降的位置(n_(eff)≈8.1～8.2)相对应,从而在非晶态金属——金属型团瓦合金中证实了因瓦效应与铁磁性的不稳定有关。
The thermal expansion curves and magnetic properties of amorphous 90 - x Co_xZr_ (10) and Fe_ (90-y) Cr_yZr_ (10) alloys were measured and the spontaneous volumetric magnetostriction ω_s and the average atomic moment μ were obtained. The electron number n_ (eff). The experimental results show that the peak position of ω_s corresponds to the position (n_ (eff) ≈8.1~8.2) where μ begins to decline sharply, and thus the amorphous metal- It confirmed that the effect of Invar is related to the instability of ferromagnetism.