Potassium doping effect on the lattice softening and electronic structure of Ba1–xKxFe2As2 probed by X-ray absorption spectroscopy

Cheng, J.; Chu, W.S.; Wu, G.; Zhao, H.F.; Xu, W.; Zhou, J.; Zhang, L.J.; Chen, X.H.; Wu, Z.Y.

doi:10.1107/S0909049510038756

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Figure 7
Normalized Fe (a) and As (b) K-edge XANES spectra for the Ba_1–xK_xFe₂As₂ (x = 0, 0.2, 0.4, 0.5) samples. The arrow in (a) shows the excitation of 1s core-level electrons to the Fe-3d/As-4p hybridized orbital in the tetrahedral symmetry (magnified view in the inset); and in (b) the arrow shows the increasing intensity (magnified view in the inset) of the shoulder peaks at the As K-edge XANES.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 17| Part 6| October 2010| Pages 730-736

doi:10.1107/S0909049510038756

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