Magnetization and Specific Heat of Fe–Be Alloys

Abstract

Magnetic and electronic specific‐heat measurements show that the s electrons of Be are not transferred to the d band in Fe–Be solid solution, but that this transfer occurs in the FeBe₂–FeBe₅ range at a rate of 0.6 electrons per Be atom while 1.4 electrons of Be remain in s state. This behavior is interpreted in supposing that the free‐electron density of iron n_s=0.9 has to be increased near n_s=1.4 by the solute electrons before s→d transfer can occur. This model applies qualitatively to the observed data of Fe–Al and Fe–Si solid solutions.