Influence of ligand substitution on magnetic hyperfine interaction in Dy6-based single-molecule magnets/toroics
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161Dy time-domain synchrotron Mössbauer spectroscopy (SMS), just recently presented as a novel tool to investigate Dy(III)-based single-molecule magnets (SMMs), has now been applied on two polynuclear Dy6-based wheel compounds possessing special features of single-molecule toroics (SMTs). The magnitude of the magnetic hyperfine field revealed for the Dy6 ring system [Dy6(teaH)6(NO3)6]·8MeOH is with B0 = 574.3(5) T characteristic for Dy(III) with a 6H15/2 ground state. The ligand substituted compound [Dy6(Me-teaH)6(NO3)6]·6MeCN possesses within the experimental errors the same magnetic hyperfine characteristics (B0 = 574.9(5) T). Consequently, the herein studied organic ligand variation has no perceptible influence on the magnetic hyperfine field sensed by the 161Dy(III) nuclei in these particular homometallic Dy(III)6-wheels.
KeywordsTime-domain Mössbauer spectroscopy/nuclear forward scattering Dysprosium Magnetic hyperfine field Single-molecule magnets
This work was supported by the Deutsche Forschungsgemeinschaft (DFG) through SFB/TRR 88 3MET. The presented research used resources of the Advanced Photon Source, U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. W. B. would like to acknowledge the partial support by COMPRES, the Consortium for Materials Properties Research in Earth Sciences under NSF Cooperative Agreement EAR 1606856.
- 13.W. Sturhahn, CONUSS is free software available via http://www.nrixs.com/conuss.html
- 15.R. Röhlsberger: Nuclear Condensed Matter Physics with Synchrotron Radiation Springer-Verlag STMP 208, Berlin Heidelberg, (2004)Google Scholar
- 16.Chumakov, A.I., Rüffer, R., Leupold, O., Barla, A., Thiess, H., Gil, J.M., Alberto, H.V., Vilao, R.C., Ayres de Campos, N., Kohn, V.G., Gerken, M., Lucht, M.: Phys. Rev. B. 63, (2001)Google Scholar
- 19.Nowik, I., Ofer, S., Wernick, J.H.: Phys. Lett. 20, (1966)Google Scholar