Complete temperature study of the relaxation from HS to LS state in the mixed [Fe_xZn_{1-x}(Phen)_2(NCS)_2] systems (with x = 1, 0.73, 0.5, 0.32, 0.19 and 0.04) - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Journal of Physics: Conference Series Année : 2009

Complete temperature study of the relaxation from HS to LS state in the mixed [Fe_xZn_{1-x}(Phen)_2(NCS)_2] systems (with x = 1, 0.73, 0.5, 0.32, 0.19 and 0.04)

Résumé

The thermal and light-induced spin transitions in [FexZn1 x(Phen)2(NCS)2] (Phen = 1,10-phenantholine) have been investigated by magnetic susceptibility, photomagnetism and diffuse reflectivity measurements. These complexes display a thermal spin transition and undergo the light-induced excited spin state trapping (LIESST) effect at low temperatures. For each compound, the thermal spin transition temperature, T1/2, and the relaxation temperature of the photo-induced high-spin state, T(LIESST), have been systematically determined. It appears that T1/2 decreases with the metal dilution while T(LIESST) remains unchanged. This behaviour is discussed on the basis of the kinetic study performed by combining the use of SQUID magnetometer, up to the T(LIESST) value, and the dynamic diffuse reflectivity setup, from the T(LIESST) temperature up to the thermal spin transition.

Dates et versions

hal-00505878 , version 1 (26-07-2010)

Identifiants

Citer

Cherif Balde, Cédric Desplanches, Olivier Nguyen, Jean-François Letard, Eric Freysz. Complete temperature study of the relaxation from HS to LS state in the mixed [Fe_xZn_{1-x}(Phen)_2(NCS)_2] systems (with x = 1, 0.73, 0.5, 0.32, 0.19 and 0.04). The LXIII Yamada Conference on Photo-Induced Phase Transition and Cooperative Phenomena, Nov 2008, Osaka, Japan. pp.012026 (1-9), ⟨10.1088/1742-6596/148/1/012026⟩. ⟨hal-00505878⟩

Collections

CNRS LOMA ANR
79 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More