Crystal structure and magnetism of layered perovskites compound EuBaCuFeO_5

摘要

Layered perovskite compounds have interesting multiferroic properties.YBaCuFeO_5 is one of the layered perovskite compounds which have magnetic and dielectric transition above 200 K. The multiferroic properties can be tuned with the replacement of Y with some other rare earth ions. In this manuscript, structural and magnetic properties of layered perovskite compound EuBaCuFeO_5 have been investigated. This compound crystallizes in the tetragonal structure with P4mm space group and is iso-structural with YBaCuFeO_5. The magnetic transition has been found to shift to 120 K as compared to YBaCuFeO_5 which has the transition at 200 K. This shift in the magnetic transition has been ascribed to the decrease in the chemical pressure that relaxes the magnetic moments.