XAS and MCD studies in Eu_0.6Sr_0.4MnO₃

Eu_1-xSr_xMnO₃ system is one of the perovskite manganites that exhibit the giant magneto resistance effect and the transition from the insulator phase to the metal. Eu_0.6Sr_0.4MnO₃ behaves as a ferromagnetic semiconductor and has an Insulator-Metal (IM) transition induced by external magnetic field, which could be found only in this system among the perovskite manganites group. The mechanism of the transition was investigated by X-ray Magnetic Circular Dichroism (XMCD) at the Mn L_2,3-edges of and the Eu M_4,5 -edges in Eu_0.6Sr_0.4MnO₃.