Heat capacity and electron density of states of FexNi82-xCr18 alloys

The heat capacity of alloys FexNi82-xCrx (x=2-37) is studied in the temperature range 4.2 to 45 K. The lattice, electron and magnetic components of heat capacity are separated and employed to estimate the Debye temperature, elecron heat capacity coefficients and magnetic anistropy, respectively. The results on magnetic entropy lead to the conclusion on the formation of the cluster-type spin glass and permit calculation of the average number of Fe atoms in the cluster. The electron densities of states of s- and a-electrons at the Fermi surface are calculated and their contributions to heat capacity and electrical conductivity are analysed