Issue 33, 2021

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

Abstract

The effects of isotopic enrichment and magnetic dilution have been investigated in a heterobimetallic complex of formula [Zn2L2ADyCl3]·2H2O (ADyZn2) (A = 162 and 163) presenting slow relaxation of the magnetization. Isotopic substitution for 162Dy (I = 0) and 163Dy (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.

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

Supplementary files

Article information

Article type
Paper
Submitted
18 mai 2021
Accepted
25 jul 2021
First published
26 jul 2021

Dalton Trans., 2021,50, 11466-11471

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

J. Flores González, B. Lefeuvre, B. Degraeve, O. Cador and F. Pointillart, Dalton Trans., 2021, 50, 11466 DOI: 10.1039/D1DT01608C

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