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Determination of Curie Temperature, Short Range Order Parameter, and Number of Nearest Neighbors of Palladium Atoms to Iron Atoms in Palladium-Iron Alloys by Resistivity Measurement
並列摘要
This article describes the measurement of resistivity of Pd-Fe alloys (8.82, 11.23, 13.22 15.00. and 17.87 atomic percent Fe) under temperatures from 77°K to 400°K, each alloy having quenched, and quenched and aged states. The alloys have their Curie temperature T, in each state found from their resistivity vs. temperature curves, together with short-range order parameter α1. It is found that Tc is higher in aged samples.The curves of alloys (excluding the 1787 at % Fe sample) are calculated for pm, the resistivity due to magnetic scattering. At T＞Tc, Pm is a constant, in close agreement with the expariment of Mydosh, and also the theory of Sivertsen on the resistivity of ferromagnetic alloys. With increase of atomic percentage of Fe (or decrease of that of Pd), the effect of aging decreases, This is similar to Sato's result of measuring the specific heat of Cu-Pd alloys.
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