UNIGE document Scientific Article
previous document  unige:17481  next document
add to browser collection
Title

Study of the relaxation in diluted spin crossover molecular magnets in the framework of the mechano-elastic model

Authors
Stoleriu, Laurentiu
Stancu, Alexandru
Published in Journal of Applied Physics. 2011, vol. 109, no. 7, p. 07B111
Abstract We model here the behavior of spin transition compounds, considering molecules arranged in a 2D hexagonal lattice and interacting via springs. The role of impurities in the clustering and nucleation phenomena is analyzed, as well as the manner in which the impurities affect the relaxation curves. The switching of the individual molecules is checked using a Monte Carlo procedure. When a molecule changes its state, it also modifies its volume, and the new equilibrium positions of all the molecules are calculated. As in previously reported experiments, it is found here that bigger impurities slow down the relaxation from the metastable high-spin state to the low-spin state, while smaller impurities act in an opposite way. It is shown that if the concentration of the impurities is higher than a certain threshold, then they act as a barrier, trammeling the fast evolution of domains developing from the edges.
Keywords Magnetic impuritiesMetastable statesMolecular magnetismMonte Carlo methodsSpin dynamics
Identifiers
Full text
Article (Published version) (2.2 MB) - document accessible for UNIGE members only Limited access to UNIGE
Other version: http://link.aip.org/link/JAPIAU/v109/i7/p07B111/s1
Structures
Research group Groupe Hauser
Citation
(ISO format)
ENACHESCU, Cristian et al. Study of the relaxation in diluted spin crossover molecular magnets in the framework of the mechano-elastic model. In: Journal of Applied Physics, 2011, vol. 109, n° 7, p. 07B111. https://archive-ouverte.unige.ch/unige:17481

226 hits

0 download

Update

Deposited on : 2011-11-21

Export document
Format :
Citation style :