The magnetic properties and magnetocaloric effect in EuTi1?xCrxO3 (x = 0, 0.02, 0.04, 0.1) compounds are investigated. The magnetic ground state (AFM) of pure EuTiO3 can be significantly changed to be FM with slight Cr-doping. A giant reversible MCE and large RC in EuTi1?xCrxO3 compounds were observed. The value of ?ΔSMmax reaches to 40.3 J/kg K for EuTiO3 under the magnetic field change of 5 T. Especially, under the magnetic field changes of 1 and 2 T, the values of ?ΔSMmax are evaluated to be 12.5 and 22.5 J/Kg K and the maximum values of RC are 64 and 127 J/kg, without magnetic and thermal hysteresis for EuTi1?xCrxO3 system. Therefore, the giant reversible MCE and large RC make the EuTi1?xCrxO3 compounds could be considered as a good candidate material for low-temperature and low-field magnetic refrigerant.

Journal of Alloys and Compounds, 2015

Magnetization isotherms of EuTi_1−xCr_xO₃ (x = 0, 0.02, 0.04, 0.1) collected in the temperature range of 2–30 K (a: x = 0; b: x = 0.02; c: x = 0.04; d: x = 0.1).