Four 52-metal-ion 3d-4f cluster complexes featuring a common core of Ln 42M 10 (Ln = Gd 3+, Dy 3+; M = Co 2+/3+, Ni 2+) were obtained through self-assembly of the metal ions templated by mixed anions (ClO 4 - and CO 3 2-). Magnetic studies revealed that the Gd 42Co 10 and Gd 42Ni 10 clusters exhibit the largest magnetocaloric effect (MCE) among any known 3d-4f complexes. Replacement of Gd 3+ ions with anisotropic Dy 3+ ions caused significant changes in the magnetic behavior of the clusters; both Dy 42Co 10 and Dy 42Ni 10 displayed slow relaxation of the magnetization.
ASJC Scopus subject areas
- Colloid and Surface Chemistry