Tunable dipolar magnetism in high-spin molecular clusters

M. Evangelisti; A. Candini; A. Ghirri; M. Affronte; G. W. Powell; I. A. Gass; P. A. Wood; S. Parsons; E. K. Brechin; D. Collison; S. L. Heath

doi:10.1103/PhysRevLett.97.167202

Tunable dipolar magnetism in high-spin molecular clusters

M. Evangelisti, A. Candini, A. Ghirri, M. Affronte, G. W. Powell, I. A. Gass, P. A. Wood, S. Parsons, E. K. Brechin, D. Collison, S. L. Heath

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

Abstract

We report on the Fe-17 high-spin molecular cluster and show that this system is an exemplification of nanostructured dipolar magnetism. Each Fe-17 molecule, with spin S=35/2 and axial anisotropy as small as D similar or equal to-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
Article number	167202
Pages (from-to)	-
Number of pages	4
Journal	Physical Review Letters
Volume	97
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.97.167202
Publication status	Published - 20 Oct 2006

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http://prl.aps.org/abstract/PRL/v97/i16/e167202

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The effect of high pressure on crystal structure topology. Studentship Peter Wood
Parsons, S.
UK industry, commerce and public corporations
1/10/04 → 31/05/08
Project: Research

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title = "Tunable dipolar magnetism in high-spin molecular clusters",

abstract = "We report on the Fe-17 high-spin molecular cluster and show that this system is an exemplification of nanostructured dipolar magnetism. Each Fe-17 molecule, with spin S=35/2 and axial anisotropy as small as D similar or equal to-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.",

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AU - Evangelisti, M.

AU - Candini, A.

AU - Ghirri, A.

AU - Affronte, M.

AU - Powell, G. W.

AU - Gass, I. A.

AU - Wood, P. A.

AU - Parsons, S.

AU - Brechin, E. K.

AU - Collison, D.

AU - Heath, S. L.

PY - 2006/10/20

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N2 - We report on the Fe-17 high-spin molecular cluster and show that this system is an exemplification of nanostructured dipolar magnetism. Each Fe-17 molecule, with spin S=35/2 and axial anisotropy as small as D similar or equal to-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 Fe-17 high-spin molecular cluster and show that this system is an exemplification of nanostructured dipolar magnetism. Each Fe-17 molecule, with spin S=35/2 and axial anisotropy as small as D similar or equal to-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

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JO - Physical Review Letters

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SN - 0031-9007

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Tunable dipolar magnetism in high-spin molecular clusters

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The effect of high pressure on crystal structure topology. Studentship Peter Wood

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