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

Centre for Photonics and Quantum Science

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

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

Y1 - 2003/2/5

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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JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

SN - 0002-7863

IS - 5

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

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