TY - JOUR
T1 - Invariant nature of substituted element in metal-hexacyanoferrate
AU - Niwa, Hideharu
AU - Kobayashi, Wataru
AU - Shibata, Takayuki
AU - Nitani, Hiroaki
AU - Moritomo, Yutaka
PY - 2017/12/1
Y1 - 2017/12/1
N2 - The chemical substitution of a transition metal (M) is an effective method to improve the functionality of materials. In order to design the highly functional materials, we first have to know the local structure and electronic state around the substituted element. Here, we systematically investigated the local structure and electronic state of the host (M h) and guest (M g) transition metals in metal-hexacyanoferrate (M-HCF), Na x (M h, M g)[Fe(CN)6] y (1.40 < x < 1.60 and 0.85 < y < 0.90), by means of extended X-ray absorption fine structure (EXAFS) and X-ray absorption near-edge structure (XANES) analyses. The EXAFS and XANES analyses revealed that the local structure and electronic state around M g are essentially the same as those in the pure compound, i.e, M g-HCF. Such an invariant nature of M g in M-HCF is in sharp contrast with that in layered oxide, in which the M g valence changes so that local M g-O distance (d M-O g) approaches the M h-O distance (d M-O h).
AB - The chemical substitution of a transition metal (M) is an effective method to improve the functionality of materials. In order to design the highly functional materials, we first have to know the local structure and electronic state around the substituted element. Here, we systematically investigated the local structure and electronic state of the host (M h) and guest (M g) transition metals in metal-hexacyanoferrate (M-HCF), Na x (M h, M g)[Fe(CN)6] y (1.40 < x < 1.60 and 0.85 < y < 0.90), by means of extended X-ray absorption fine structure (EXAFS) and X-ray absorption near-edge structure (XANES) analyses. The EXAFS and XANES analyses revealed that the local structure and electronic state around M g are essentially the same as those in the pure compound, i.e, M g-HCF. Such an invariant nature of M g in M-HCF is in sharp contrast with that in layered oxide, in which the M g valence changes so that local M g-O distance (d M-O g) approaches the M h-O distance (d M-O h).
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U2 - 10.1038/s41598-017-13719-z
DO - 10.1038/s41598-017-13719-z
M3 - Article
AN - SCOPUS:85031770645
SN - 2045-2322
VL - 7
JO - Scientific Reports
JF - Scientific Reports
IS - 1
M1 - 13225
ER -