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Characterization of the light induced excited spin state of a heterometallic FePt2 complex by high-field Mössbauer spectroscopy

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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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Authors and Affiliations

  1. Department of Physics, University of Kaiserslautern, Erwin-Schrödinger-Str. 56, 67663, Kaiserslautern, Germany

    T. Bauer, A. Omlor, H. Auerbach, K. Jenni, R. Diller & V. Schünemann

  2. Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany

    B. Schäfer & M. Ruben

  3. Institute de Physique et Chimie de Matériaux de Strasbourg (IPCMS), CNRS-Université de Strasbourg, 23, rue du Loess, BP 43, 67034, Strasbourg cedex 2, France

    M. Ruben

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  1. T. Bauer
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  2. A. Omlor
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  3. H. Auerbach
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  4. K. Jenni
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  5. B. Schäfer
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  6. R. Diller
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  7. M. Ruben
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  8. V. Schünemann
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Corresponding author

Correspondence to A. Omlor.

Additional information

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

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