J
Jean-François Létard
Researcher at University of Bordeaux
Publications - 181
Citations - 8380
Jean-François Létard is an academic researcher from University of Bordeaux. The author has contributed to research in topics: Spin crossover & LIESST. The author has an hindex of 47, co-authored 174 publications receiving 7809 citations. Previous affiliations of Jean-François Létard include University of Valencia & Ludwig Maximilian University of Munich.
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Neutron powder diffraction studies of two spin transition FeII complexes under pressure
TL;DR: In this article, pressure dependences of the lattice parameters of two spin transition compounds have been derived from neutron powder diffraction measurements at ambient temperature, and the atypical spin crossover behaviour of this compound under pressure was explained.
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Photomagnetic properties of the [Fe(L222(N3O2))(CN)2]·H2O complex: a fascinating example of multi-metastability
TL;DR: In this paper, the photomagnetic properties of the Fe(L222(N3O2))(CN)2]H2O complex were investigated in terms of multimetastability.
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Crown-linked dipyridylamino-triazine ligands and their spin-crossover iron(II) derivatives: magnetism, photomagnetism and cooperativity
Hayley S. Scott,Tamsyn Maree Ross,Nicholas F. Chilton,Nicholas F. Chilton,Ian A. Gass,Boujemaa Moubaraki,Guillaume Chastanet,Nicolas Paradis,Jean-François Létard,Kuduva R. Vignesh,Gopalan Rajaraman,Stuart Robert Batten,Keith S. Murray +12 more
TL;DR: An attempt has been made to understand the electronic structure of complex 3 and its cooperativity behaviour using density functional methods, the calculations reproducing the sign and, in part, the magnitude of the cooperativity.
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Complete temperature study of the relaxation from the high-spin state to low-spin state in a strongly cooperative spin crossover compound
Jérôme Degert,Noëlle Lascoux,S. Montant,Sylvie Létard,Eric Freysz,Guillaume Chastanet,Jean-François Létard +6 more
TL;DR: In this article, the relaxation of a photo-induced spin state transition in a strongly cooperative compound has been studied from 10 to 170 K. The relaxation rate increases with temperature, and the stabilization of the high-spin state results in a decrease of the relaxation rate.
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High-spin to low-spin relaxation kinetics in the [Fe(TRIM)2]Cl2 complex
Sébastien Bonhommeau,Nicolas Bréfuel,Villö K. Pálfi,Villö K. Pálfi,Gábor Molnár,Antoine Zwick,Lionel Salmon,Jean-Pierre Tuchagues,José Sánchez Costa,Jean-François Létard,Hauke Paulsen,Azzedine Bousseksou +11 more
TL;DR: The introduction of a distribution of vibrational frequencies into this model improved significantly the fits in the low-temperature range and gave a good agreement with the experimental data in the whole temperature range suggesting a multi-rate relaxation process in this complex.