The specific heat of high purity gadolinium between 1.5 and 14K

Abstract

The specific heat of high purity gadolinium, prepared by solid electrotransport processing, has been measured in the temperature range 1.5 to 14K, and the data analysed for electronic, Debye and magnetic contributions to the total specific heat. The electronic coefficient gamma was found to be 3.7+or-0.2 mJ mol-1 K-2 and the magnetic specific heat, assumed to be of the form CM=BTn, yielded B=1.94+or-0.04 mJ mol-1 K-(n+1) with n=1.75+or-0.05. The Debye temperature between 1.5 and 5K was calculated to be 187+or-3K, while for temperatures in excess of 5K it was found to decrease with temperature to a constant value of 160+or-3K above 12K.