Remarkable Ln(3)(III)Fe(2)(III) clusters with magnetocaloric effect and slow magnetic relaxation

Two remarkable pentanuclear 3d-4f clusters of Ln(3)Fe(2) were synthesized and structurally characterized. Magnetic studies indicate that Gd3Fe2 possesses the significant magnetic entropy change (-Delta S-m) of 31.7 J kg(-1) K-1 and slow magnetic relaxation is observed in the anisotropic Dy-analogue.