Effect of Spin Fluctuations on the Specific Heat in βMn Metal and Alloys

The low temperature specific heat was measured in βMn metal and alloys with V, Cr, Fe, Co and Ni. The large enhancement of the electronic specific heat due to spin fluctuations is observed. The coefficient of the electronic specific heat, γ, changes with the excess number of the d electrons per atom in the alloy, Δ n d , having a peak at Δ n d =0.005 which indicates that pure βMn remains paramagnetic even at 0 K. The behavior of the electronic specific heat is explained well qualitatively by the self-consistently renormalized spin fluctuation theory by Hasegawa.