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Soft x-ray absorption spectroscopy study of Prussian blue analogue ACo[Fe(CN)6]H2O nano-particles (A=Na, K)

Title
Soft x-ray absorption spectroscopy study of Prussian blue analogue ACo[Fe(CN)6]H2O nano-particles (A=Na, K)
Authors
Lee E.Kim D.H.Hwang J.Kang J.-S.Van Minh N.Yang I.-S.Ueno T.Sawada M.
Ewha Authors
양인상
SCOPUS Author ID
양인상scopus
Issue Date
2013
Journal Title
Journal of the Korean Physical Society
ISSN
0374-4884JCR Link
Citation
vol. 62, no. 12, pp. 1910 - 1913
Indexed
SCI; SCIE; SCOPUS; KCI WOS scopus
Abstract
The electronic structures of Prussian blue analogue ACo[Fe(CN)6]H2O (A=Na, K) nano-size particles has been investigated by employing soft X-ray absorption spectroscopy (XAS) at the Fe and Co L edges. Both Fe and Co ions are found to be Fe2+-Fe3+ and Co2+-Co3+ mixed-valent, with the average valence of v(Fe)∼ 2.36 and v(Co)∼ 2.41. This finding suggests that the mechanism of the photo-induced spin transition in ACo[Fe(CN)6]H2O (A=Na, K) is not a simple spin-state transition of Fe2+-Co3+ → Fe3+-Co2+. The Fe ions in ACo[Fe(CN)6]H2O are also found to have a strong covalent bonding to (CN)- ligands, but a very weak bonding to O(H2O), while Co ions have a stronger bonding to O(H2O) than to (CN)- ligands. © 2013 The Korean Physical Society.
DOI
10.3938/jkps.62.1910
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자연과학대학 > 물리학전공 > Journal papers
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