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

被引：0

作者：

Eunsook Lee

D. H. Kim

Jihoon Hwang

J. -S. Kang

Nguyen Van Minh

In-Sang Yang

T. Ueno

M. Sawada

机构：

[1] The Catholic University of Korea,Department of Physics

[2] Hanoi National University of Education,Department of Physics

[3] Ewha Womans University,Department of Physics

[4] Hiroshima University,Hiroshima Synchrotron Radiation Center (HSRC)

来源：

Journal of the Korean Physical Society | 2013年 / 62卷

关键词：

XAS; Prussian blue; Molecular magnets; Electronic structure;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

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.

引用

页码：1910 / 1913

页数：3

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