Recent advances in the synthesis of 3d/4f Single-Molecule Magnets (SMMs) have revealed the effective role of incorporating diamagnetic Co or Zn ions to enhance the magnetic properties of Ln ions. This concept highlights notable examples of Co/Ln and Zn/Ln SMMs documented in the recent literature, illustrating how the selection of various peripheral and/or bridging ligands can modulate the magnetic anisotropy of 4f metal ions, thereby increasing their energy barriers.
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