Optical determination of the single-ion zero-field splitting in large spin clusters

David Collison; Vasily S. Oganesyan; Stergios Piligkos; Andrew J. Thomson; Richard E. P. Winpenny; Eric J. L. McInnes

doi:10.1021/ja029003x

Optical determination of the single-ion zero-field splitting in large spin clusters

David Collison, Vasily S. Oganesyan, Stergios Piligkos, Andrew J. Thomson, Richard E. P. Winpenny, Eric J. L. McInnes

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19 Citations (Scopus)

Abstract

The dodecametallic Cr(III) cluster has an S = 6 ground state with an axial zero-field splitting (ZFS) of D_S=6 = +0.088 cm^-1. Analysis of high-resolution optical data (MCD) allows us to determine the single-ion ZFS of the constituent Cr(III) ions directly (D = -1.035 cm^-1). A vector coupling analysis demonstrates that the cluster ZFS is almost entirely single-ion in origin. Thus, the relative orientations of the local and cluster magnetic axes can lead to cluster ZFS of opposite sign to the single-ion even when this is the only significant contribution.

Original language	English
Pages (from-to)	1168-1169
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	125
Issue number	5
Early online date	11 Jan 2003
DOIs	https://doi.org/10.1021/ja029003x
Publication status	Published - 5 Feb 2003

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abstract = "The dodecametallic Cr(III) cluster has an S = 6 ground state with an axial zero-field splitting (ZFS) of DS=6 = +0.088 cm-1. Analysis of high-resolution optical data (MCD) allows us to determine the single-ion ZFS of the constituent Cr(III) ions directly (D = -1.035 cm-1). A vector coupling analysis demonstrates that the cluster ZFS is almost entirely single-ion in origin. Thus, the relative orientations of the local and cluster magnetic axes can lead to cluster ZFS of opposite sign to the single-ion even when this is the only significant contribution.",

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AU - Collison, David

AU - Oganesyan, Vasily S.

AU - Piligkos, Stergios

AU - Thomson, Andrew J.

AU - Winpenny, Richard E. P.

AU - McInnes, Eric J. L.

PY - 2003/2/5

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N2 - The dodecametallic Cr(III) cluster has an S = 6 ground state with an axial zero-field splitting (ZFS) of DS=6 = +0.088 cm-1. Analysis of high-resolution optical data (MCD) allows us to determine the single-ion ZFS of the constituent Cr(III) ions directly (D = -1.035 cm-1). A vector coupling analysis demonstrates that the cluster ZFS is almost entirely single-ion in origin. Thus, the relative orientations of the local and cluster magnetic axes can lead to cluster ZFS of opposite sign to the single-ion even when this is the only significant contribution.

AB - The dodecametallic Cr(III) cluster has an S = 6 ground state with an axial zero-field splitting (ZFS) of DS=6 = +0.088 cm-1. Analysis of high-resolution optical data (MCD) allows us to determine the single-ion ZFS of the constituent Cr(III) ions directly (D = -1.035 cm-1). A vector coupling analysis demonstrates that the cluster ZFS is almost entirely single-ion in origin. Thus, the relative orientations of the local and cluster magnetic axes can lead to cluster ZFS of opposite sign to the single-ion even when this is the only significant contribution.

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SP - 1168

EP - 1169

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 5

ER -

Optical determination of the single-ion zero-field splitting in large spin clusters

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