Structural, Magnetic and Magnetocaloric Properties of DyCoO3 Nanoparticles.

The structural, magnetic and magnetocaloric effect (MCE) properties were studied in DyCoO3 nanoparticles. The synthesized DyCoO3 nanoparticles were approximately 200 nm in size with a typical orthogonal perovskite structure. DyCoO3 possesses an antiferromagnetic ordering at TN = 3.9 K. In magnetic field changes of 0–60 kOe, a giant maximum magnetic entropy change of 16.6 J/kg K and a relative cooling power of 354 J/kg were obtained around TN. These results suggest that DyCoO3 nanoparticles could be regarded as promising candidate for low temperature magnetic refrigerants. [ABSTRACT FROM AUTHOR]