Influence of the low local symmetry of Er3+ ions on magnetic circular dichroism and absorption spectra of f-f transitions in ErFe3(BO3)4 single crystal

Magneto-optical Properties of Chiral Co2Ln and Co3Ln2 (Ln = Dy and Er) Clusters

“…18 The optical properties of intra-4f N transitions (f−f transitions) in lanthanide compounds are usually insensitive to the surrounding environment, primarily due to the shielding effect of the outer 5s and 5p electrons, with the hypersensitive transitions being an exception. 42,43 In this chrial 3d−4f clusters, MCD highlights a strong response of hypersensitive f−f transitions to the magnetic field compared to the d−d transition and other f−f transitions. 18 Therefore, the hypersensitive f−f transitions exhibit significant MCD responses, suggesting the potential of chiral 3d−4f clusters as promising magneto-optical materials.…”