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Updated: Aug 4, 2025

An Aptamer-based Sensor for Unchelated GadoliniumIII
Published on: January 9, 2017
Approaching the free-ion limit in magnetically isotropic gadolinium(III) via borohydride ligands
Michał Magott1, Wojciech Wegner2
1Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland. michal.magott@uj.edu.pl.
Abstract:
Three new crystalline phases of the borohydride complex, [n-Bu4N][RE(BH4)4] (RE = Gd (1), Gd0.097Y0.903 (2) and Gd0.017Y0.983 (3)), were obtained in pure form and characterised using EPR spectroscopy and AC/DC magnetometry. In all 1-3, unusually slow field-induced magnetic relaxation was observed up to high temperatures, which above 10 K is dominated by power law thermal dependence identified as the two-phonon Raman process. Therefore, weak-field ligands such as borohydride seem to be the perfect candidates for triggering slow magnetic relaxation of magnetically isotropic gadolinium(III) ions.
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