Dynamics of photoinduced phase transitions in hexacyanoferrate studied by infrared and Raman spectroscopy

被引：8
|
作者：
Suemoto, T. [1 ]
Fukaya, R. [1 ]
Asahara, A. [1 ]
Nakajima, M. [1 ]
Tokoro, H. [2 ]
Ohkoshi, S. [2 ]
机构：
[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
[2] Univ Tokyo, Sch Sci, Dept Chem, Bunkyo Ku, Tokyo 1130033, Japan
来源：
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2011年 / 248卷 / 02期
关键词：
dynamics; infrared; photoinduced phase transition; Raman; picosecond; RUBIDIUM MANGANESE HEXACYANOFERRATE; ELECTRON-TRANSFER; CHARGE-TRANSFER; COMPLEXES; STATES; SPIN;
D O I：
10.1002/pssb.201000671
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Unrevealed aspects of the photoinduced phase transition are discussed with a special emphasis placed on domains and domain boundaries. The CN vibration spectroscopy, which is sensitive to the phase changes and boundaries, is applied to photomagnetic phase transition material, RbMn[Fe(CN)(6)]. From time-resolved IR measurements for photoinduced low temperature to high temperature phase transition, the transient appearance of the boundaries as well as the new phase within 1 ps is observed. The growth processes of the low temperature phase and boundaries during UV irradiation on the sample in high temperature phase are investigated by Raman spectroscopy at room temperature. The result suggests that the new phase appears preferably in the fresh area and a lot of unpaired fragments of high temperature phase are left behind after a prolonged irradiation. [GRAPHICS] (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：477 / 481
页数：5
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