Optical spectroscopy of a chromium doped (CH3)(2)NH2Al(SO4)(2)center dot 6H(2)O single crystal in the ferroelectric phase

被引：17
|
作者：
RybaRomanowski, W [1 ]
Golab, S [1 ]
Pisarski, WA [1 ]
Podsiadla, D [1 ]
Czapla, Z [1 ]
机构：
[1] UNIV WROCLAW,INST PHYS,PL-50138 WROCLAW,POLAND
来源：
CHEMICAL PHYSICS LETTERS | 1997年 / 264卷 / 3-4期
关键词：
D O I：
10.1016/S0009-2614(96)01358-9
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The chromium doped (CH3)(2)NH2Al(SO4)(2) . 6H(2)O crystal was obtained from solution by a slow evaporation method at 303 K and investigated in the ferroelectric phase below 150 K using optical spectroscopy. It was found that the Cr3+ ions in the crystal are situated in a strong crystal field in which the (2)E State is the lowest. A single narrow R line associated with the (2)E-(4)A(2) phosphorescence indicates an undistorted octahedral Cr3+ Site in the host lattice. The O-H bonds in the first coordination sphere induce efficient nonradiative transitions from the (2)E emitting state and the Cr3+ emission is completely quenched at temperatures above 150 K.
引用
收藏
页码：323 / 326
页数：4
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