English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present a study of charge transfer in Na-intercalated FeOCl andpolyaniline-intercalated FeOCl using high-resolution x-ray absorptionspectroscopy and resonant x-ray emission spectroscopy at the Fe-K edge. Bycomparing the experimental data with ab-initio simulations, we are able tounambiguously distinguish the spectral changes which appear due tointercalation into those of electronic origin and those of structural origin.For both systems, we find that about 25% of the Fe sites are reduced to Fe2+via charge transfer between FeOCl and the intercalate. This is about twice aslarge as the Fe2+ fraction reported in studies using Mossbauer spectroscopy.This discrepancy is ascribed to the fact that the charge transfer occurs on thesame time scale as the Mossbauer effect itself. Our result suggests that everyintercalated atom or molecule is involved in the charge-transfer process, thusmaking this process a prerequisite for intercalation. The Fe2+ fraction isfound to increase with pressure for polyaniline-FeOCl, hinting at anenhancement of the conductivity in the FeOCl intercalation compounds underpressure.

Charge transfer in FeOCl intercalation compounds and its pressure dependence: An x-ray spectroscopic study