Abstract
In order to study the interaction of light with iron containing complexes we have built a dedicated sample holder based on fiber optics, which allows exposing iron containing samples with external light sources during Mössbauer spectroscopic experiments both at low temperatures down to T = 4.2 K and high fields up to B = 5 T. With this set-up it was possible to study light induced spin state trapping (LIESST) of a heterometallic trinuclear FePt2 spin crossover (SCO) complex. The analysis of the field dependent Mössbauer spectra obtained at 4.2 K under illumination with red laser light at 635 nm shows the presence of a LIESST state with a zero field splitting of D = 5.3 cm − 1 and a rhombicity parameter of E/D = 0.14.
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Acknowledgements
This work has been supported by the German Science foundation (DFG) via the SFB-TRR-88 3MET.
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This article is part of the Topical Collection on Proceedings of the International Conference on the Applications of the Mössbauer Effect (ICAME 2017), Saint-Petersburg, Russia, 3–8 September 2017
Edited by Valentin Semenov
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Bauer, T., Omlor, A., Auerbach, H. et al. Characterization of the light induced excited spin state of a heterometallic FePt2 complex by high-field Mössbauer spectroscopy. Hyperfine Interact 238, 98 (2017). https://doi.org/10.1007/s10751-017-1464-0
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DOI: https://doi.org/10.1007/s10751-017-1464-0