We present a systematic X-Ray Magnetic Circular Dichroism study perfor
med at the L-2,L-3-edges of the rare earth in on the R2Fe14B series (R
= rare-earth). The aim of the present work is to test the validity of
the current models proposed for account the XMCD L-2,L-3-edges spectr
a, in intermetallic R-M compounds. In particular, the correlation betw
een the XMCD signals and the spin polarization of the 5d empty states
of the rare earth, i.e., the conduction electrons in the R-M interacti
on, which tunes the magnetic properties of these systems.