Journal ArticleDOI
Single-Molecule Magnet Behavior of a Tetranuclear Iron(III) Complex. The Origin of Slow Magnetic Relaxation in Iron(III) Clusters
A. L. Barra,Andrea Caneschi,Andrea Cornia,Fabrizia Fabrizi de Biani,Dante Gatteschi,Claudio Sangregorio,Roberta Sessoli,Lorenzo Sorace +7 more
TLDR
In this article, the synthesis, crystal structure, and magnetic characterization of a novel tetranuclear iron(III) methoxo-bridged cluster of formula Fe4(OCH3)6(dpm)6 (where Hdpm = dipivaloylmethane) is reported.Abstract:
The synthesis, crystal structure, and magnetic characterization of a novel tetranuclear iron(III) methoxo-bridged cluster of formula Fe4(OCH3)6(dpm)6 (where Hdpm = dipivaloylmethane) is reported. The cluster has a ground spin state of S = 5, which is selectively populated below 20 K. High-field EPR spectra revealed that the system has a uniaxial magnetic anisotropy, corresponding to a zero field splitting parameter D = −0.2 cm-1 of the S = 5. Such anisotropy below 1 K gives rise to the slow relaxation of the magnetization similar to that of super-paramagnets. To investigate the origin of the magnetic anisotropy we have evaluated the projection of the single-ion and dipolar contributions to the zfs of the ground state. The zfs tensors of the three structurally independent iron(III) centers have been calculated from the coordination geometry and spectroscopic data using the angular overlap model. To test the reliability of the approach high-field EPR spectra of the parent monomer Fe(dpm)3 have been recorded...read more
Citations
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Book ChapterDOI
Synthesis of 3d metallic single-molecule magnets
Guillem Aromí,Euan K. Brechin +1 more
Journal ArticleDOI
Radical ligand-containing single-molecule magnets
TL;DR: A survey of radical ligand-containing single-molecule magnets can be found in this article, with a brief overview of other classes of metal-ligand radical complexes that could be exploited in the design of new single molecule magnet.
Journal ArticleDOI
Mononuclear Lanthanide Single Molecule Magnets Based on the Polyoxometalates [Ln(W5O18)2]9− and [Ln(β2-SiW11O39)2]13−(LnIII = Tb, Dy, Ho, Er, Tm, and Yb)
Murad A. AlDamen,Salvador Cardona-Serra,Juan M. Clemente-Juan,Eugenio Coronado,Alejandro Gaita-Ariño,Carlos Martí-Gastaldo,Fernando Luis,Oscar Montero +7 more
TL;DR: The first two families of polyoxometalate-based single-molecule magnets (SMMs) are reported here and the ligand-field parameters and the splitting of the J ground-state multiplet of the lanthanide ions have been also estimated.
Journal ArticleDOI
Supramolecular coordination chemistry: the synergistic effect of serendipity and rational design.
TL;DR: This Review emphasizes the achievements in supramolecular coordination chemistry initiated by serendipity and their materialization based on rational design and the design of rational strategies for the construction of a variety of nanosized systems with specified size and shape.
Journal ArticleDOI
Single-Chain Magnet (NEt4)[Mn2(5-MeOsalen)2Fe(CN)6] Made of MnIII−FeIII−MnIII Trinuclear Single-Molecule Magnet with an ST = 9/2 Spin Ground State
Marilena Ferbinteanu,Hitoshi Miyasaka,Wolfgang Wernsdorfer,Kazuya Nakata,Ken-ichi Sugiura,Masahiro Yamashita,Claude Coulon,Rodolphe Clérac +7 more
TL;DR: A new strategy to design single-chain magnets by coupling ferromagnetically single-molecule magnets in one dimension is illustrated by combining ac susceptibility and dc susceptibility measurements of a cyano-bridged trinuclear compound.
References
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Journal ArticleDOI
Magnetic bistability in a metal-ion cluster
TL;DR: In this article, it was shown that the magnetization of the Mn12 cluster is highly anisotropic and the magnetisation relaxation time becomes very long below a temperature of 4 K, giving rise to pronounced hysteresis.
Book
The physical principles of magnetism
TL;DR: In this paper, the authors present a review of the properties of the magnetic field and its properties in terms of properties such as: 1. The magnetic field, the magnetization vector, the Langevin Formula for Diamagnetic Susceptibility, and the magnetic shell.
Journal ArticleDOI
Macroscopic measurement of resonant magnetization tunneling in high-spin molecules
TL;DR: It is proposed that these effects are manifestations of thermally assisted, field-tuned resonant tunneling between quantum spin states, and attribute the observation of quantum-mechanical phenomena on a macroscopic scale to tunneling in a large (Avogadro's) number of magnetically identical molecules.
Journal ArticleDOI