Inelastic x-ray scattering measurements of iron organophosphonate
Abstract
Results of theoretical and experimental studies of 3d states of divalent Fe ions in Fe[C2H5PO3].H2O are reported. Partial density of the Fe 3d states is calculated in the LDA+U formalism and used for modeling the final state of emission in Fe L2,3 x-ray spectra obtained at near-threshold excitation. The variation of the spectral shape with the energy of incident radiation is discussed. For the excitation energy near the Fe L2 threshold, an anomalous enhancement of L2 emission is observed. This effect is interpreted as a result of resonance interaction between two radiation channels. The first of them is a normal fluorescence, which is static in the energy scale of photons and which is due to ionization of Fe atoms. The other channel is a ``drifting'' emission due to excitation of Fe atoms in the course of absorption of incident radiation.
- Publication:
-
Physical Review B
- Pub Date:
- February 2001
- DOI:
- 10.1103/PhysRevB.63.075113
- Bibcode:
- 2001PhRvB..63g5113F
- Keywords:
-
- 71.20.-b;
- 81.05.Lg;
- 75.50.Xx;
- 78.70.En;
- Electron density of states and band structure of crystalline solids;
- Polymers and plastics;
- rubber;
- synthetic and natural fibers;
- organometallic and organic materials;
- Molecular magnets;
- X-ray emission spectra and fluorescence