Low temperature specific heats have been studied for Ce(Fe1-xCox)2 and Hf1-yTayFe2, which show a double magnetic transition. It was found that the electronic specific heat coefficient of the antiferromagnetic state, γAF is smaller than that of the ferromagnetic state, γF in Ce(Fe1-xCox)2, while γAF is larger than γF in Hf1-yTayFe2 . These results are discussed on the basis of band theory taking account of spin fluctuations.
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