Magnetization and AC susceptibility of TbxY1-xCo compounds

Abstract

Magnetization and ac susceptibility measurements have been performed on TbxY1-xCo2 compounds. Samples with x > 0.1 order ferromagnetically below room temperature. The cobalt magnetic moments in these compounds are induced by the internal magnetic field exerted by the terbium moments on the cobalt atoms. The ac susceptibility measurements indicate a change from second order to first order in the ferromagnetic transition for samples with x-values equal or smaller than 0.5. ?? 1983.