2D Spin Crossover Nanoparticles described by the Ising-like model solved in Local Mean-Field Approximation

Salah Eddine Allal (1, 2) , Jorge Linares (1) , K. Boukheddaden (1) , Pierre-Richard Dahoo (2) , F. de Zela (3)

1 GEMAC - Groupe d'Etude de la Matière Condensée
2 PLANETO - LATMOS
3 PUCP - Pontificia Universidad Católica del Perú = Pontifical Catholic University of Peru

Some six-coordinate iron (II) coordination compounds exhibit thermal-, optical-, electrical-, magnetic- and pressure-induced switching between the diamagnetic low-spin (LS, S=0) and the paramagnetic high-spin (HS; S=2) states [1]. This may lead to potential application of these complexes in molecular devices such as temperature and pressure sensors [2]. An Ising-like model has been proposed to explain the occurrence of the thermal hysteresis behaviour [3,4] of this switchable solids. In this contribution, the local mean field approximation is applied to solve the Hamiltonian modelling interactions pertaining to 2D nanoparticles embedded in a magnetically-inactive matrix

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Salah Eddine Allal, Jorge Linares, K. Boukheddaden, Pierre-Richard Dahoo, F. de Zela. 2D Spin Crossover Nanoparticles described by the Ising-like model solved in Local Mean-Field Approximation. Journal of Physics: Conference Series, 2017, 936, pp.012052. ⟨10.1088/1742-6596/936/1/012052⟩. ⟨insu-01575684⟩