| Abstract
| - X-ray magnetic circular dichroism (XMCD) measurements have been performed at the Cr and Fe K-edgesfor the two-dimensional oxalate-based magnet {[N(C4H9)4][FeIIFeIII0.77CrIII0,23(ox)3]}n (ox = C2O42-) in itslong-range ordered magnetic state. First, the XMCD spectra recorded under a 2 T applied magnetic field areused to probe the local exchange interaction between the metal ions through the relative orientation of theirspins in the magnetic field. The remnant local magnetic moments on the Cr and Fe ions have been clearlyevidenced, analyzed, and compared to the total remnant magnetization measured by conventional magnetometry.The respective impact of single ion anisotropy, magneto-structural anisotropy, and exchange interaction onthe remnant magnetic state is then discussed.
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