High-pressure Raman spectroscopy of transition metal cyanides

遷移金属プルシアンブルー型シアノ錯体の高圧ラマンスペクトル

Moritomo, Yutaka*; Matsuda, Tomoyuki*; Fuchikawa, Ryota*; Abe, Yuta; Kamioka, Hayato*

Prussian blue lattice is known to show characteristic thermal response; coefficient( $frac{d{it a}}{d{it T}}$ ; is lattice constant) of the thermal expansion changes the sign from positive to negative with increase in . In order to comprehend the curious thermal response, we systematically investigated pressure-response of lattice for ${it A$_{x}$}$ ${it M$^{2+}$}$ [Fe $^{3+}$ (CN) $_{6}$ ] $_{it y}$ H $_{2}$ O (= Rb and Cs, M = Ni, Zn and Cd) by means of high-pressure Raman spectroscopy. We found that pressure coefficients ( / of the Raman shift () for the CN stretching modes are fairly suppressed in the = Cd compounds. The suppression of is interpreted in terms of the enhance rotational instability of the Fe(CN) $_{6}$ octahedra in the large-a region.

使用言語	:	English
掲載資料名	:	Journal of the Physical Society of Japan
巻	:	80
号	:	2
ページ数	:	p.024603_1 - 024603_5
発行年月	:	2011/02
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論文URL	:	https://doi.org/10.1143/JPSJ.80.024603
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InCites™	:	パーセンタイル：33.73 分野：Physics, Multidisciplinary
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登録番号 : AA20100238
抄録集掲載番号 : 39000616
論文投稿番号 : 8832

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