Abstract
The specific heat measurements of YMn 2 and Y 0.97 Sc 0.03 Mn 2 , which exhibit giant spin fluctuatuions in the paramagnetic state, were carried out in the temperature range of 13 K to 300 K. The spin fluctuation contribution to the specific heat C m was estimated by subtracting the phonon and electronic parts. The magnetic entropy S m was deduced from C m . Above 120 K, where the the effect of the antiferromagnetic transition vanishes, the entropy curves of two compounds coincide each other, indicating that in the paramagnetic state, YMn 2 has the same amplitude of spin fluctuations as Y 0.97 Sc 0.03 Mn 2 . The absolute value of the entropy was also discussed taking account of results of neutron scattering measurements.
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