Sm 3+ doped BaFe 12 O 19 were synthesized by solid state reaction technique. The occupation of Sm 3+ was investigated by XAFS, XPS and XRD. Sm 3+ occupied Ba 2+ sites and Fe 3+ ions were partially reduced to Fe 2+ ions.

Jan 1, 2023 · X-ray absorption fine structure (XAFS) and scanning transmission electron microscopy indicated a selective occupation of the Sm site by Zr atoms without disturbing the Fe sublattices. The chemical shift in the Zr- K edge XAFS spectra suggested electron transfer from Zr to …

Sm2Fe17Nx compounds is important in order to clarify the mechanism of the change in magnetic properties by nitrogenation. These studies have not yet been performed, except on the lattice parameters and the unit cell volume. We carried out XAFS studies on the Sm K -edge in Sm2Fe17Nx (x= 0.0, ≤0.1, 0.5, 2.0 and 3.0) at room temperature

Jan 1, 1999 · High energy XAFS studies of Sm: K -edge in Sm 2 Fe 17 N x with x=0.0, 0.1, 0.5, 2.0 and 3.0 were carried out at room temperature in order to clarify the relation between the local structure around the Sm-atom and the change of the magnetic property due …

X-ray absorption fine structure (XAFS) is a specific structure observed in X-ray absorption spectroscopy (XAS). By analyzing the XAFS, information can be acquired on the local structure and on the unoccupied local electronic states.

May 1, 2005 · As our EXAFS spectrum is a sum of contributions of Sm atoms in two ionic states Sm 2+ and Sm 3+, our DW factor dependence appears to exceed one corresponding to Einstein model, this can be caused by appearance of Debye–Waller factor static component.

According to a detailed X-ray absorption fine structure (XAFS) analysis, the difference in luminescence is explained by the change in the ligand structure of the REs when added to the rutile and...

The comparative X-ray absorption spectroscopy study of gadolinium and samarium bisporphyrinate complexes represented by the formulas Gd III H(oep)(tpp), Gd III (oep) 2 , Gd III H(tpp) 2 and Sm III H(oep)(tpp), Sm III (oep) 2 , Sm III H-(tpp) 2 is

Feb 28, 2015 · M-type barium hexaferrites doped with Sm3+, Ba1-xSmxFe12O19 (x=0.00, 0.05, 0.10, 0.15, 0.20, 0.30, 0.50) were prepared by conventional solid state reaction technique. Occupation of Sm3+ ions in...

Feb 19, 2016 · X-ray absorption fine structure (XAFS) spectroscopy studies the modification of the X-ray absorption coefficient, above the absorption edge of a specific element, due to the presence of neighboring atoms and delivers information on materials nano- and electronic structure.