Abstract
The linear and non-linear ac-susceptibilities of the Mott insulator YVO3 were measured using a Hartshorn mutual inductance bridge. It is found by the temperature dependence of ac-susceptibilities that there are two magnetic phase transitions at 72.1 and 112.0 K. Above 112K, the values of linear and non-linear susceptibilities qualitatively consist with the result of the mean-field theory. It is verified that there is a power-law dependence between linear and non-linear susceptibilities, which is predicted by the mean-field theory.
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