Abstract
The molecular based magnet Cs-I[(NiCrIII)-Cr-II(CN)(6)]. 2H(2)O is a ferromagnet with a Curie temperature T-c = 90 K. Its structure consists of face centered cubic lattice of Ni-II ions connected by Cr(CN)(6) entities. We have recorded X-ray Magnetic Circular Dichroism (XMCD) at the L(2,3) edges of Ni-II. Through Crystal Field Multiplet calculation we have determined the total magnetic moment carried by the Ni-II. By using sum rules derived for XMCD, it has been possible to extract orbital and spin contributions to the total magnetic moment. A somewhat too small magnetic moment is found on nickel. A complete calculation taking into account the multiplet coupling effect and the covalent hybridization allowed to determine the precise ground state of nickel and showed that hybridization with surrounding nitrogen atoms is not responsible for the experimental low nickel magnetic moment.
| Original language | English |
|---|---|
| Pages (from-to) | 775-776 |
| Number of pages | 2 |
| Journal | Physica. B, condensed matter |
| Volume | 208 |
| Issue number | 1-4 |
| Publication status | Published - Mar 1995 |
| Externally published | Yes |
| Event | 8th International Conference on X-Ray Absorption Fine Structure (XAFS VIII) - BERLIN, Germany Duration: 28 Aug 1994 → 1 Sept 1994 |