Chemical trend of Ln–M exchange couplings in heterometallic complexes with Ln = Gd, Tb, Dy, Ho, Er and M = Cu, V
Abstract
The 4f–3d exchange couplings were definitively and precisely determined in the dinuclear complexes (Ln–M) involving double μ-oxo-bridges, by means of combined high-frequency electron paramagnetic resonance and pulsed-field magnetization techniques, revealing a monotonic decrease of ferromagnetic JLn–Cu in the order of the atomic number, 64Gd to 68Er.