Modulating Magnetic Performance in DyIII Single Ion Magnets With N5O2 Ligands

resumo

[Dy (L-Me)(H2O)]CF3SO30.25H(2)O (10.25H(2)O), where H2LMe is the reported ligand 2,2 '-(((pyridine-2,6-diylbis (methylene))bis((pyridin-2-ylmethyl)azanediyl))bis (methylene))bis(4-methylphenol), shows the DyIII ion in an N5O3 environment, with triangular dodecahedral geometry (D-2d symmetry). 10.25H(2)O is a single ion magnet (SIM) with an energy barrier for spin reversal of 510 K, and open hysteresis loops up to 8 K. The magnetostructural comparison of 10.25H(2)O with some closely related complexes and with other eight-coordinated SIMs with high energy barriers (> 300 K) allows to draw some conclusions to enhance the magnetic performance in these nanomagnets with non-purely axial geometries. Ab initio calculations complement and support the experimental results.

palavras-chave

RELAXATION; COMPLEXES; FIELD

categoria

Chemistry

autores

Fondo, M; Oreiro-Martínez, P; Corredoira-Vázquez, J; García-Deibe, AM; Sanmartín-Matalobos, J; Aravena, D

nossos autores

agradecimentos

This work was supported by Universidade de Santiago de Compostela (2024-PU027-1). J.C.-V. thanks Xunta de Galicia for his postdoctoral fellowship (ED481B-2022-068). P.O.-M. thanks the Fundacion Segundo Gil Davila for her PhD fellowship. D.A. thanks Fondo Nacional de Desarrollo Cientifico y Tecnologico (Regular 1210325) for financial support. Powered@NLHPC: This research was partially supported by the supercomputing infrastructure of the NLHPC (ECM-02).

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