Direct access to the photo-excitation and relaxation terms in photo-switchable solids: non-linear aspects

被引：37

作者：

Enachescu, C

Constant-Machado, H

Codjovi, E

Linares, J

Boukheddaden, K

Varret, F

机构：

[1] Univ Versailles, CNRS, UMR 8634, Lab Magnetisme & Opt, F-78035 Versailles, France

[2] Alexandra Ioan Cuza Univ, Fac Phys, Iasi 6600, Romania

[3] Cent Univ Venezuela, Caracas, Venezuela

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2001年 / 62卷 / 08期

关键词：

D O I：

10.1016/S0022-3697(01)00056-7

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We investigate the photo-excitation process and the relaxation of the photo-excited state in photo-switchable solids, such as spin transitions systems. We follow the competition between the relaxation and the photo-excitation (up and eventually down) processes. The kinetic experimental curves are treated so as to derive the various contributions to the master equation, in terms of a single macroscopic variable: the population of the photo-excited state. The experimental examples are taken from [FexM1-x(btr)(2)(NCS)(2)].H(2)0, with M = Co, Ni, Zn. They give evidence for a non-linear character of the relaxation at all temperatures, including the tunnelling regime, and for non-linear behaviours of the photo-excitation rates. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：1409 / 1422

页数：14

共 48 条

[1] PHOTOINDUCED VALENCE TAUTOMERISM IN COBALT COMPLEXES CONTAINING SEMIQUINONE ANION AS LIGAND - DYNAMICS OF THE HIGH-SPIN [COII(3,5-DTBSQ)(2)] TO LOW-SPIN [CO-III(3,5-DTBSQ)(3,5-DTBCAT)] INTERCONVERSION [J].