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给出用张力磁化法测量零磁致伸缩非晶态合金饱和磁致伸缩常数λ_5的灵敏度和分辨力表达式,讨论了实现高灵敏度的条件。在典型的实验条件下,大角转动法、小角转动法、高灵敏度小角转动法和可逆畴转法的分辨力为10~(-8)～10~(-9)。它们还可进一步减小。同时指出,为满足材料研究的需要,除了提高灵敏度外,提高测λ_s的准确性也是同样重要的。
The expression of sensitivity and resolving power of the magnetostriction constant λ_5 of zero-magnetostrictive amorphous alloy measured by tension magnetization method is given. The conditions of high sensitivity are discussed. Under typical experimental conditions, the resolution of large angle rotation method, small angle rotation method, high sensitivity small angle rotation method and reversible domain rotation method is 10 -8 to 10 -9. They can be further reduced. Also pointed out that in order to meet the needs of material research, in addition to increasing the sensitivity, it is equally important to improve the accuracy of measuring λ_s.