DYNAMIC SPIN-CROSSOVER IN [FE-II(TRIM)(2)]CL-2 INVESTIGATED BY MOSSBAUER-SPECTROSCOPY AND MAGNETIC MEASUREMENTS

Authors
LEMERCIER G BOUSSEKSOU A VERELST M VARRET F TUCHAGUES JP
Citation
G. Lemercier et al., DYNAMIC SPIN-CROSSOVER IN [FE-II(TRIM)(2)]CL-2 INVESTIGATED BY MOSSBAUER-SPECTROSCOPY AND MAGNETIC MEASUREMENTS, Journal of magnetism and magnetic materials, 150(2), 1995, pp. 227-230
Citations number
10
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
150
Issue
2
Year of publication
1995
Pages
227 - 230
Database
ISI
SICI code
0304-8853(1995)150:2<227:DSI[IB>2.0.ZU;2-U
Abstract
The magnetic and Mossbauer data of the new coordination complex [Fe-II (TRIM)(2)]Cl-2, where TRIM = 4'-(4-methylimidazole-2'-(2''-methylimida zole) afford evidence for a complete and progressive spin conversion b etween the (1)A(1) and T-5(2) spin states, The interstate conversion f requencies measured in the 220-300 K temperature range follow an Arrhe nius behavior, The thermal variation of the equilibrium constant over the whole temperature range approximately follows a linear Arrhenius p lot, thus indicating a very low degree of cooperativity in this materi al; a small distortion from the linear plot suggests a vibrational eff ect.