Forced Volume Magnetostriction of a Fe–Ni Invar Alloy near the Curie Temperature

抄録

The forced volume magnetostriction measured precisely in a relatively weak magnetic field shows a sharp maximum in the region of Curie temperature for a 36.4 at%Ni–Fe Invar alloy.
The magnetovolume coupling constant C determined in the temperature range between room temperature and the Curie temperature is found to be approximately 1.2×10⁻⁸ cm⁶/emu² and almost independent of the temperature, under the condition that the forced volume magnetostriction is related with the local magnetic moment and the high-field susceptibility due to the band term.