Abstract
A mechanism is proposed for the magnetic circular X-ray dichroism (MCXD) at the pre-peak of the Fe K-edge in rare-earth iron garnets. It is found based on a cluster model that, at the pre-peak, the hybridization between the 3d state and the 4p state of an Fe ion on the tetrahedral site through the ligand 2p states is responsible for the weak electric-dipole absorption while the combined effect of the spin-orbit interaction and the spin polarization in the 3d states give rise to its MCXD. In addition, the configuration interaction is shown to be important in explaining the asymmetric dispersion-type MCXD spectra observed. The effects of the core hole as well as of the band character of the 4p states are discussed briefly in connection with MCXD observed in the main K-edge region.
| Original language | English |
|---|---|
| Pages (from-to) | 3016-3020 |
| Number of pages | 5 |
| Journal | journal of the physical society of japan |
| Volume | 65 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Jan 1 1996 |
Keywords
- Electric-dipole transition
- Hybridization
- MCXD
- Rare-earth iron garnet
ASJC Scopus subject areas
- Physics and Astronomy(all)