title: Magnetic and Mössbauer investigation of the photomagnetic Prussian blue analogue Na(0.32)Co[Fe(CN)6](0.74).3.4H2O: cooperative relaxation of the thermally quenched state.
abstract: Thanks to thermal quenching we investigated the relaxation of the metastable state of Na(0.32)Co[Fe(CN)6](0.74).3.4H2O at low temperature. A self-accelerated process has been observed in agreement with the cooperative character of the system, responsible for the large thermal hysteresis of the charge-transfer-induced spin transition. The mean-field analysis of the relaxation is discussed with respect to the equilibrium properties. A sizable deviation from mean-field behavior is observed at the beginning of the relaxation process, which might be attributed to a preliminary structural relaxation of the quenched state.
authors.affiliation: Laboratoire de Magnétisme et d'Optique, CNRS-Université de Versailles Saint Quentin, 45, Avenue des Etats-Unis, 78035 Versailles Cedex, France.
authors.forename: S
authors.initials: S
authors.lastname: Gawali-Salunke
authors.forename: F
authors.initials: F
authors.lastname: Varret
authors.forename: I
authors.initials: I
authors.lastname: Maurin
authors.forename: C
authors.initials: C
authors.lastname: Enachescu
authors.forename: M
authors.initials: M
authors.lastname: Malarova
authors.forename: K
authors.initials: K
authors.lastname: Boukheddaden
authors.forename: E
authors.initials: E
authors.lastname: Codjovi
authors.forename: H
authors.initials: H
authors.lastname: Tokoro
authors.forename: S
authors.initials: S
authors.lastname: Ohkoshi
authors.forename: K
authors.initials: K
authors.lastname: Hashimoto