The effect of magnetic field on thermopower of CeFe2

The thermopower of MgCu2-type C15 Laves phase compound CeFe2 have been measured in the temperature range from 1.5 to 300 K under magnetic fields up to 15 T. Temperature dependence of S shows no distinct anomaly at T-C in zero magnetic field and also in magnetic field. S is positive except low temperature. At low temperatures, S(T) curves are represented by S(T) = aT + bT(3/2), where the coefficient of a shows no field dependence, on the other hand, b decreases with increasing magnetic field. It implies that the antiferromagnetic fluctuations have an important role at low temperatures. (C) 2003 Elsevier B.V. All rights reserved.