Debye Temperature and Lattice Deviation of Fe-Ni (fcc) Alloys

概要

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Debye temperature Θ_M and maximum lattice deviation √<<U^2>^^-> of Fe-Ni(fcc) alloys are calculated in the range of 0°∼500℃ using the values of Young's modulus and shear modulus previously obtained with the same specimens. The results obtained are the following: (1) In its concentration dependence, Debye temperature at the paramagnetic state Θ_<Mp> shows a minimum at around 40% of Ni. (2) In its concentration dependence √<<U^2>^^-> shows a maximum at around 40% of Ni. As T becomes higher, the concentration showing √<<U^2>^^-> maximum gradually moves toward the Fe-rich side. (3) The concentration dependence of resistivity at the paramagnetic state ρ_p does not follow Nordheim's rule. As one of the significant factors causing this "shift" from the rule, the contribution of thermal agitation of lattice cannot be neglected.
社団法人日本物理学会の論文
1971-01-05