Abstract
Traditional mean-field theory of light-induced magneto-structural relaxation in spin-crossover compounds provides a qualitatively correct explanation for the non-Markovian self-accelerating character of the experimentally observed kinetics of the process. The relaxation kinetics of “breathing” crystals is often also of non-Markovian character, being, however, self-decelerating. In this work the self-decelerating kinetics of light-induced magneto-structural relaxation is explained using a kinetic analysis of the concentration profile of photoexcited Jahn—Teller exchange clusters in “breathing” crystals of finite thickness. The results obtained are also equally applicable to the kinetics of light-induced relaxation of classical spin-crossover systems.
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Dedicated to Academician of the Russian Academy of Sciences V. I. Ovcharenko on the occasion of his 70th birthday.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1363–1368, July, 2022.
No human or animal subjects were used in this research.
The authors declare no competing interests.
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Morozov, V.A. On the origin of non-Markovian kinetics of light-induced magneto-structural relaxation in “breathing” crystals. Russ Chem Bull 71, 1363–1368 (2022). https://doi.org/10.1007/s11172-022-3541-z
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DOI: https://doi.org/10.1007/s11172-022-3541-z