SPECIFIC-HEAT OF AMORPHOUS (HF,TA) FE-2 ALLOYS

Specific heat measurements on vapor-quenched itinerant-electron ferromagnetic amorphous Hf1-xTaxFe2 alloys have been performed from 4.2 to 300 K by using a light-chopped ac method. The specific heat below 10 K follows the gamma T + AT(3) law. The electronic specific heat coefficient gamma increases as a function of x. The Debye temperature estimated from the A value is almost independent of the Ta concentration.