original_query: What is the significance of magnetic quenching in Ni clusters?
query: What is the significance of magnetic quenching in Ni clusters?
answer: Magnetic quenching in Ni clusters, a significant effect of ligands on metal cluster magnetism, causes the magnetic moments of surface Ni atoms to become zero and reduces the magnetic moment of inner Ni atoms to 0.5 μB due to ligand-induced electronic effects.