Tunable Dipolar Magnetism in High-Spin Molecular Clusters

Marco Evangelisti; Andrea Candini; Alberto Ghirri; Marco Affronte; G.W. Powell; Ian A. Gass; Peter A. Wood; Simon Parsons; Euan K. Brechin; David Collison; Sarah L. Heath

doi:10.1103/PhysRevLett.97.167202

Tunable Dipolar Magnetism in High-Spin Molecular Clusters

Marco Evangelisti, Andrea Candini, Alberto Ghirri, Marco Affronte, G.W. Powell, Ian A. Gass, Peter A. Wood, Simon Parsons, Euan K. Brechin, David Collison, Sarah L. Heath

University of Brighton

Research output: Contribution to journal › Article › peer-review

Abstract

We report on the Fe17 high-spin molecular cluster and show that this system is an exemplification of nanostructured dipolar magnetism. Each Fe17 molecule, with spin S 35=2 and axial anisotropy as small as D = -0.02 K, is the magnetic unit that can be chemically arranged in different packing crystals while preserving both the spin ground state and anisotropy. For every configuration, molecular spins are correlated only by dipolar interactions. The ensuing interplay between dipolar energy and anisotropy gives rise to macroscopic behaviors ranging from superparamagnetism to long-range magnetic order at temperatures below 1 K.

Original language	English
Journal	Physical Review Letters
Volume	97
DOIs	https://doi.org/10.1103/PhysRevLett.97.167202
Publication status	Published - 20 Oct 2006

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title = "Tunable Dipolar Magnetism in High-Spin Molecular Clusters",

abstract = "We report on the Fe17 high-spin molecular cluster and show that this system is an exemplification of nanostructured dipolar magnetism. Each Fe17 molecule, with spin S 35=2 and axial anisotropy as small as D = -0.02 K, is the magnetic unit that can be chemically arranged in different packing crystals while preserving both the spin ground state and anisotropy. For every configuration, molecular spins are correlated only by dipolar interactions. The ensuing interplay between dipolar energy and anisotropy gives rise to macroscopic behaviors ranging from superparamagnetism to long-range magnetic order at temperatures below 1 K.",

author = "Marco Evangelisti and Andrea Candini and Alberto Ghirri and Marco Affronte and G.W. Powell and Gass, {Ian A.} and Wood, {Peter A.} and Simon Parsons and Brechin, {Euan K.} and David Collison and Heath, {Sarah L.}",

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T1 - Tunable Dipolar Magnetism in High-Spin Molecular Clusters

AU - Evangelisti, Marco

AU - Candini, Andrea

AU - Ghirri, Alberto

AU - Affronte, Marco

AU - Powell, G.W.

AU - Gass, Ian A.

AU - Wood, Peter A.

AU - Parsons, Simon

AU - Brechin, Euan K.

AU - Collison, David

AU - Heath, Sarah L.

PY - 2006/10/20

Y1 - 2006/10/20

N2 - We report on the Fe17 high-spin molecular cluster and show that this system is an exemplification of nanostructured dipolar magnetism. Each Fe17 molecule, with spin S 35=2 and axial anisotropy as small as D = -0.02 K, is the magnetic unit that can be chemically arranged in different packing crystals while preserving both the spin ground state and anisotropy. For every configuration, molecular spins are correlated only by dipolar interactions. The ensuing interplay between dipolar energy and anisotropy gives rise to macroscopic behaviors ranging from superparamagnetism to long-range magnetic order at temperatures below 1 K.

AB - We report on the Fe17 high-spin molecular cluster and show that this system is an exemplification of nanostructured dipolar magnetism. Each Fe17 molecule, with spin S 35=2 and axial anisotropy as small as D = -0.02 K, is the magnetic unit that can be chemically arranged in different packing crystals while preserving both the spin ground state and anisotropy. For every configuration, molecular spins are correlated only by dipolar interactions. The ensuing interplay between dipolar energy and anisotropy gives rise to macroscopic behaviors ranging from superparamagnetism to long-range magnetic order at temperatures below 1 K.

U2 - 10.1103/PhysRevLett.97.167202

DO - 10.1103/PhysRevLett.97.167202

M3 - Article

SN - 0031-9007

VL - 97

JO - Physical Review Letters

JF - Physical Review Letters

ER -

Tunable Dipolar Magnetism in High-Spin Molecular Clusters

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