Hard x-ray spectroscopy of the itinerant magnets RFe4Sb12 (R=Na, K, Ca, Sr, Ba)

@article{Mounssef2019HardXS,
  title={Hard x-ray spectroscopy of the itinerant magnets 
RFe4Sb12
 
(R=Na, K, Ca, Sr, Ba)},
  author={Bassim Mounssef and Marli R. Cantarino and E. M. Bittar and T{\'a}rsis M Germano and Andreas Leithe-Jasper and F. A. Garcia},
  journal={Physical Review B},
  year={2019}
}
Ordered states in itinerant magnets may be related to magnetic moments displaying some weak local moment characteristics, as in intermetallic compounds hosting transition metal coordination complexes. In this paper, we report on the Fe $K$-edge X-ray absorption spectroscopy (XAS) of the itinerant magnets $R$Fe$_{4}$Sb$_{12}$ ($R=$ Na, K, Ca, Sr, Ba), aiming at exploring the electronic and structural properties of the octahedral building block formed by Fe and the Sb ligands. We find evidence… Expand

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References

SHOWING 1-10 OF 86 REFERENCES
Infrared study on the electronic structure of the alkaline-earth-filled skutteruditesAM4Sb12(A=Sr,Ba;M=Fe,Ru,Os)
The optical conductivity [$\sigma(\omega)$] spectra of alkaline-earth-filled skutterudites with the chemical formula $A^{2+}M_{4}$Sb$_{12}$ ($A$ = Sr, Ba, $M$ = Fe, Ru, Os) and a reference materialExpand
Weak itinerant ferromagnetism and electronic and crystal structures of alkali-metal iron antimonides: NaFe4Sb12 and KFe4Sb12
The synthesis, chemical, structural, and magnetic properties of alkali-metal compounds with filled-skutterudite structure, $\mathrm{Na}{\mathrm{Fe}}_{4}{\mathrm{Sb}}_{12}$ andExpand
Strong coupling between 4f valence instability and 3d ferromagnetism in Yb(x)Fe4Sb12 studied by resonant x-ray emission spectroscopy.
TLDR
An anomalous increase of the Yb valence, which is beyond the conventional Anderson model picture, is found to coincide with the onset of the ferromagnetic order in the x=0.88 sample below 20 K, which evidences a close interplay between the magnetic instability of the Fe 3d electrons and valence instability ofThe Yb 4f electrons. Expand
Co-substitution effects on the Fe valence in the BaFe2As2 superconducting compound: a study of hard x-ray absorption spectroscopy.
The Fe K x-ray absorption near edge structure of BaFe(2-x)Co(x)As(2) superconductors was investigated. No appreciable alteration in shape or energy position of this edge was observed with CoExpand
Roles of spin fluctuations and rattling in magnetic and thermoelectric properties of AT4Sb12 (A=Ca, Sr, Ba, La; T=Fe, Ru, Os)
Abstract Magnetic and thermoelectric properties of the skutterudites AT4Sb12 filled with non-magnetic atoms, A=Ca, Sr, Ba and La, are found to depend strongly on the transition-metal elements, T=Fe,Expand
Magnetic, thermal, and electronic properties of iron-antimony filled skutterudites MFe4Sb12 (M = Na, K, Ca, Sr, Ba, La, Yb)
The magnetic susceptibility, field-dependent heat capacity, and electrical transport properties (resistivity and Hall effect) are investigated for filled skutteruditesExpand
Filled platinum germanium skutterudites MPt4Ge12 (M = Sr, Ba, La—Nd, Sm, Eu): crystal structure and chemical bonding
Abstract The crystal structures of filled skutterudite compounds MPt4Ge12 (M = Sr, Ba, La—Nd, Sm, Eu) with LaFe4P12 type structure were refined from single crystal XRD data. Displacement parametersExpand
Pressure and chemical substitution effects in the local atomic structure of BaFe2As2
The effects of K and Co substitutions and quasihydrostatic applied pressure ( P< 9G Pa) in the local atomic structure of BaFe2As2 ,B a(Fe 0.937Co0.063)2As2 and Ba0.85K0.15Fe2As2 superconductors wereExpand
A study of temperature dependent local atomic displacements in a Ba(Fe(1-x)Co(x))2As2 superconductor.
TLDR
The results suggest that the local Fe-Fe bondlength fluctuations and the atomic disorder in this sub-lattice should have some important role in the superconductivity of Ba(Fe(1-x)Co(x))2As2 pnictides. Expand
Itinerant iron magnetism in filled skutterudites CaFe4Sb12 and YbFe4Sb12: Stable divalent state of ytterbium
A comparative study of the filled skutterudite compounds $\mathrm{Yb}{\mathrm{Fe}}_{4}{\mathrm{Sb}}_{12}$ and $\mathrm{Ca}{\mathrm{Fe}}_{4}{\mathrm{Sb}}_{12}$ is presented. Crystal structureExpand
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