Reversible Control by Light of the High‐Spin Low‐Spin Elastic Interface inside the Bistable Region of a Robust Spin‐Transition Single Crystal. (6th January 2016)

• Record Type: Journal Article
• Authors: Sy, Mouhamadou; Garrot, Damien; Slimani, Ahmed; Páez‐Espejo, Miguel; Varret, François; Boukheddaden, Kamel
• Is Part Of: Angewandte Chemie. Volume 128:Number 5(2016)
• Page Start: 1787
• Page End: 1791
• Publication Date: 2016-01-06
• Subjects: Elastische Grenzflächen -- Optische Mikroskopie -- Phasenübergänge -- Räumlich-zeitliche Eigenschaften -- Spin-Crossover; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201509294
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: By using a weak modulated laser intensity we have succeeded in reversibly controlling the dynamics of the spin‐crossover (SC) single crystal [{Fe(NCSe)(py)2 }2 ( m ‐bpypz)] inside the thermal hysteresis. The experiment could be repeated several times with a reproducible response of the high‐spin low‐spin interface and without crystal damage. In‐depth investigations as a function of the amplitude and frequency of the excitation brought to light the existence of a cut‐off frequency ca. 1.5 Hz. The results not only document the applicability of SC materials as actuators, memory devices, or switches, but also open a new avenue for the reversible photo‐control of the spin transition inside the thermal hysteresis.