| Autor: |
Zamudio-Bayer, V., Hirsch, K., Langenberg, A., Kossick, M., Lawicki, A., Terasaki, A., v. Issendorff, B., Lau, J. T. |
| Předmět: |
|
| Zdroj: |
Journal of Chemical Physics; 2015, Vol. 142 Issue 23, p1-6, 6p, 1 Graph |
| Abstrakt: |
The electronic structure and magnetic moments of free Mn2+ and Mn3+ are characterized by 2p x-ray absorption and x-ray magnetic circular dichroism spectroscopy in a cryogenic ion trap that is coupled to a synchrotron radiation beamline. Our results directly show that localized magnetic moments of 5 μB are created by 3d5(6S) states at each ionic core, which are coupled ferromagnetically to form molecular high-spin states via indirect exchange that is mediated in both cases by a delocalized valence electron in a singly occupied 4s derived antibonding molecular orbital with an unpaired spin. This leads to total magnetic moments of 11 μB for Mn2+ and 16 μB for Mn3+, with no contribution of orbital angular momentum. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
