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摘要: 文中根据K. Yosida对锰铜合金电阻率的理论，认为电阻率和下列各量成比例关系：VDS/Ef，式中Ef是电子的费米能，V为导体体积，S为锰离子的自旋，D为交换积分函数。代入计算电阻的公式，求得R/R=D/D－Ef/Ef+S/S+2V/(3V)，然后文中分别求出了上式中后边前三项和V/V的关系，最后利用静力压缩曲线求得R/R和流体静压力p的关系为：R/R0=2.41105p (Pa)，流体动压力关系为：R/R0=2.8105p (Pa)，和实验结果进行了比较，十分符合。Abstract: According to the theory of the resistivity of manganin alloy given by K. Yosida, the resistivity is proportional to the following quantities: VDS/Ef, where Ef is the Fermi energy of an electron, V is the volume of the conductor, S is the spin of the manganese ion, D is the exchange integral function. Substituting into the formula of resistance, it is given R/R=D/D－Ef/Ef+S/S+2V/(3V). Then the autor derives the relations of the former three terms in the right hand of this equation to V/V, and by means of the hydrostatic compression curve, gets the relation of R/R with respect to as following R/R0=2.41105p (Pa), the relation with the dynamical pressure is R/R0=2.8105p (Pa). The results are compared with the experimental works both abroad and at home, they are very in accord with each other.
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Key words:
- manganin gauge /
- Fermi energy /
- exchange integral function /
- dynamic compression
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