Abstract
Double perovskite (Sr1.8Eu0.13Ba0.07)FeMoO6 (SEBFMO) as well as Sr2FeMoO6 (SFMO) were prepared by the traditional solid reaction method. X-ray diffraction results show that all compounds are single phase, which belongs to I4/m space group. The magnetic hysteretic loops (M-H) and field-cooled magnetization (FC) curves indicate that all compounds have good ferromagnetic properties. The FC curves show a phase transition temperature at around 370K. The Arrot plots (H/M-M2) of samples show that a second-order magnetic transition has occurred. An enhanced magnetocaloric effect was observed in SEBFMO. The maximum isothermal magnetic entropy change of SEBFMO reaches to 0.76Jkg−1K−1 for ∆H = 3T, but that of SFMO only reaches to 0.50Jkg−1K−1.
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