Study of the influence of nuclear spin and dilution over the slow relaxation in a 3d4f heterobimetallic single-molecule magnet - Archive ouverte HAL
Article Dans Une Revue Dalton Transactions Année : 2021

Study of the influence of nuclear spin and dilution over the slow relaxation in a 3d4f heterobimetallic single-molecule magnet

Résumé

The effects of isotopic enrichment and magnetic dilution have been investigated in a heterobimetallic complex of formula [ZnLDyCl]·2HO (DyZn) (A = 162 and 163) presenting slow relaxation of the magnetization. Isotopic substitution for Dy (I = 0) and Dy (I = 5/2) leads to a shift in the relaxation times depending on the suppression or enhancement of the hyperfine interactions. The release of the dipolar interactions through magnetic dilution in a Y(iii)-based matrix enhances the slow relaxation of the magnetization and the visibility of the nuclear spin effect. A comparison of the hysteresis loop at 0.5 K for bulk and diluted analogues of pure isotopically enriched complexes suggested a role of the nuclear spin in the interaction between the active system and the matrix.

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Chimie
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Dates et versions

hal-03331218 , version 1 (16-09-2021)

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Jessica Flores Gonzalez, Bertrand Lefeuvre, Bastien Degraeve, Olivier Cador, Fabrice Pointillart. Study of the influence of nuclear spin and dilution over the slow relaxation in a 3d4f heterobimetallic single-molecule magnet. Dalton Transactions, 2021, 50 (33), pp.11466-11471. ⟨10.1039/d1dt01608c⟩. ⟨hal-03331218⟩
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