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Lookup NU author(s): Professor Mike ProbertORCiD
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).
© 2023 The Authors. Chemistry - A European Journal published by Wiley-VCH GmbH.The extreme sensitivity of trivalent lanthanide ions to crystal field variations led to the emergence of single-molecule magnetic switching under various stimuli. The use of pressure as an external stimulus instead of classic light irradiation, oxidation or any chemical reactions allows a fine tuning of the magnetic modulation. Here the well-known pure isotopically enriched [162Dy(tta)3(L)]⋅C6H14 (162Dy) Single-Molecule Magnet (SMM) (tta−=2-2-thenoyltrifluoroacetonate and L=4,5-bis(propylthio)-tetrathiafulvalene-2-(2-pyridyl)benzimidazole-methyl-2-pyridine) was experimentally investigated by single-crystal diffraction and squid magnetometry under high applied pressures. Both reversible piezochromic properties and pressure modulation of the slow magnetic relaxation behavior were demonstrated and supported by ab initio calculations. The magnetic study of the diluted sample [162Dy0.05Y0.95(tta)3(L)]⋅C6H14 (162Dy@Y) indicated that variations in the electronic structure have mainly intermolecular origin with weak intramolecular contribution. Quantitative magnetic interpretation concludes to a deterioration of the Orbach process for the benefit of both Raman and QTM mechanisms under applied pressure.
Author(s): Pointillart F, Flores Gonzalez J, Douib H, Montigaud V, McMonagle CJ, Le Guennic B, Cador O, Pinkowicz D, Probert MR
Publication type: Article
Publication status: Published
Journal: Chemistry - A European Journal
Year: 2023
Volume: 29
Issue: 35
Print publication date: 22/06/2023
Online publication date: 08/05/2023
Acceptance date: 18/04/2023
Date deposited: 13/06/2023
ISSN (print): 0947-6539
ISSN (electronic): 1521-3765
Publisher: John Wiley and Sons Inc
URL: https://doi.org/10.1002/chem.202300445
DOI: 10.1002/chem.202300445
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