Invariant nature of substituted element in metal-hexacyanoferrate

Hideharu Niwa, Wataru Kobayashi, Takayuki Shibata, Hiroaki Nitani, Yutaka Moritomo

研究成果: Article査読

10 被引用数 (Scopus)

抄録

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).

本文言語English
論文番号13225
ジャーナルScientific Reports
7
1
DOI
出版ステータスPublished - 2017 12 1
外部発表はい

ASJC Scopus subject areas

  • General

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