M. Hagiwara et al., NONLINEAR SUSCEPTIBILITY DERIVED FROM HARMONIC RESPONSE ANALYSIS NEARTHE MAGNETIC CRITICAL-TEMPERATURES OF COCL2-GIC, Journal of magnetism and magnetic materials, 177, 1998, pp. 175-176
True nonlinear susceptibility chi(2) is experimentally estimated near
the magnetic critical temperatures of CoCl2-GIC by applying Fourier tr
ansformation technique. It is confirmed that singularity of chi(2) vs.
temperature intrinsically alters with AC-field amplitude around intra
cluster ordering point of the intercalated CoCl2. In the complex magne
t, origin of the chi(2) singularity changes from intercluster spin-gla
ss-type fluctuation to intracluster ferromagnetic one with decreasing
AC-field strength. (C) 1998 Elsevier Science B.V. All rights reserved.