Structural transition induced by charge-transfer in RbMn[Fe(CN)6] -: Investigation by synchrotron-radiation X-ray powder analysis

被引：57

作者：

Moritomo, Y ^{[1
]}

Kato, K

Kuriki, A

Takata, M

Sakata, M

Tokoro, H

Ohkoshi, S

Hashimoto, K

机构：

[1] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648603, Japan

[2] JST, PRESTO, Kawaguchi, Japan

[3] Japan Synchrotron Radiat Res Inst, Hyogo 6795198, Japan

[4] Nagoya Univ, Dept Crystalline Mat Sci, Nagoya, Aichi 4648603, Japan

[5] Univ Tokyo, Adv Sci & Technol Res Ctr, Tokyo 1538904, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2002年 / 71卷 / 09期

关键词：

synchrotron-radiation X-ray powder diffraction; Rietveld structural analysis; transition metal cyanide;

D O I：

10.1143/JPSJ.71.2078

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Temperature dependence of atomic coordinates is determined for RbMn[Fe(CN)(6)] by means of synchrotron-radiation (SR) X-ray powder structural analysis. We observed a structural transition from the cubic (F (4) over bar 3m; Z = 4) to the tetragonal (I (4) over bar m2; Z = 2) phase at approximate to210 K in the cooling run and at approximate to300 K in the warming run. In the low-temperature tetragonal phase, we found Jahn-Tellar type distortion of the MnN6 octahedra and compression of the averaged Fe-C bond distance. These structural data suggest that the structural transition is triggered by the inter-metallic charge-transfer from the Mn(II) site to the Fe(III) site.

引用

页码：2078 / 2081

页数：4

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