Nonlinear Susceptibility of a Spin Glass Compound (Ti_1−xV_x)₂O₃. I

抄録

The nonlinear susceptibilities of a spin glass compound (Ti_1−xV_x)₂O₃ (x=0.04, 0.10) have been measured by an ac mutual inductance bridge. The third and fifth nonlinear susceptibilities, which are observed as the third and fifth higher harmonics of the applied field, show the very sharp peak in the vicinity of the spin glass ordering temperature T_g, and increase logarithmically near T_g as the temperature approaches to T_g. These results are compared with the theories which indicate the cooperative freezing of spins.