Abstract
The dynamics of photoinduced phase transition in spin-crossover materials is studied using numerical simulations of a microscopic two-variable anharmonic model, in close connection with photocrystallographic experiments on the prototype system $[\text{Fe}{(\text{btr})}_{2}{(\text{NCS})}_{2}].{\text{H}}_{2}\text{O}$. A comparative analysis of the simulated diffraction pattern with excitation duration and intensity as variables is performed. Nonlinear dynamics, threshold effect in excitation intensity and light-induced phase separation are modeled and attributed to a strong electron-lattice coupling, mediated by long-range elastic interactions. Photoinduced nucleation and domain growth of the metastable high-spin phase is evidenced and quantitatively explained in the Avrami formalism.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.