XMCD study of the Ruddlesden-Popper phase La1.2Nd0.2Sr1.6Mn2O7

X-ray Magnetic Circular Dichroism (XMCD) measurements of the Ruddlesden-Pop per Phase La1.2Nd0.2Sr1.6Mn2O7 are reported. The Mn K, La and Nd L-2,L-3 ed ges have been measured on a powder sample at two different magnetic fields at low temperature. The analysis of the spectra at B = 1T indicates a large orbital moment of the Nd 5d-states and a significant spin-polarization of the La 5d-band. Furthermore at the Mn K-edge a XMCD-signal is observed, sho wing a polarization of the Mn 4p-band. At lower field (0.2T) all XMCD-signa ls are about two times smaller corresponding to the lower total magnetizati on. The signal at the Nd L-2 edge vanishes completely at 0.2T.