Cobalt(II) Citrate Cubane Single-Molecule Magnet

K. W. Galloway; A. M. Whyte; W. Wernsdorfer; Javier Sanchez-Benitez; Konstantin Kamenev; A. Parkin; R. D. Peacock; M. Murrie

doi:10.1021/ic800896k

Cobalt(II) Citrate Cubane Single-Molecule Magnet

K. W. Galloway, A. M. Whyte, W. Wernsdorfer, Javier Sanchez-Benitez, Konstantin Kamenev, A. Parkin, R. D. Peacock, M. Murrie

School of Engineering

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

Abstract

An investigation of the magnetic properties of the cobalt(II) citrate cubane [C(NH2)3]8{Co4(cit)4}·4H2O reveals that the cluster is a new cobalt(II) single-molecule magnet, with an energy barrier to reorientation of the magnetization, ΔE/kB = 21 K, and τ0 = 8 × 10−7 s. The compound displays distinct, frequency-dependent peaks in the out-of-phase (χ′′) component of the ac magnetic susceptibility and magnetization versus field hysteresis loops that are temperature and sweep rate dependent. The hysteresis loops collapse at zero field due to very fast quantum tunneling of the magnetization (QTM).

Original language	English
Pages (from-to)	7438-7442
Number of pages	5
Journal	Inorganic Chemistry
Volume	47
Issue number	16
Early online date	16 Jul 2008
DOIs	https://doi.org/10.1021/ic800896k
Publication status	Published - 2008

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10.1021/ic800896k

http://pubs.acs.org/doi/pdf/10.1021/ic800896k

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title = "Cobalt(II) Citrate Cubane Single-Molecule Magnet",

abstract = "An investigation of the magnetic properties of the cobalt(II) citrate cubane [C(NH2)3]8\{Co4(cit)4\}·4H2O reveals that the cluster is a new cobalt(II) single-molecule magnet, with an energy barrier to reorientation of the magnetization, ΔE/kB = 21 K, and τ0 = 8 × 10−7 s. The compound displays distinct, frequency-dependent peaks in the out-of-phase (χ′′) component of the ac magnetic susceptibility and magnetization versus field hysteresis loops that are temperature and sweep rate dependent. The hysteresis loops collapse at zero field due to very fast quantum tunneling of the magnetization (QTM).",

author = "Galloway, \{K. W.\} and Whyte, \{A. M.\} and W. Wernsdorfer and Javier Sanchez-Benitez and Konstantin Kamenev and A. Parkin and Peacock, \{R. D.\} and M. Murrie",

year = "2008",

doi = "10.1021/ic800896k",

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volume = "47",

pages = "7438--7442",

journal = "Inorganic Chemistry",

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publisher = "American Chemical Society",

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T1 - Cobalt(II) Citrate Cubane Single-Molecule Magnet

AU - Galloway, K. W.

AU - Whyte, A. M.

AU - Wernsdorfer, W.

AU - Sanchez-Benitez, Javier

AU - Kamenev, Konstantin

AU - Parkin, A.

AU - Peacock, R. D.

AU - Murrie, M.

PY - 2008

Y1 - 2008

N2 - An investigation of the magnetic properties of the cobalt(II) citrate cubane [C(NH2)3]8{Co4(cit)4}·4H2O reveals that the cluster is a new cobalt(II) single-molecule magnet, with an energy barrier to reorientation of the magnetization, ΔE/kB = 21 K, and τ0 = 8 × 10−7 s. The compound displays distinct, frequency-dependent peaks in the out-of-phase (χ′′) component of the ac magnetic susceptibility and magnetization versus field hysteresis loops that are temperature and sweep rate dependent. The hysteresis loops collapse at zero field due to very fast quantum tunneling of the magnetization (QTM).

AB - An investigation of the magnetic properties of the cobalt(II) citrate cubane [C(NH2)3]8{Co4(cit)4}·4H2O reveals that the cluster is a new cobalt(II) single-molecule magnet, with an energy barrier to reorientation of the magnetization, ΔE/kB = 21 K, and τ0 = 8 × 10−7 s. The compound displays distinct, frequency-dependent peaks in the out-of-phase (χ′′) component of the ac magnetic susceptibility and magnetization versus field hysteresis loops that are temperature and sweep rate dependent. The hysteresis loops collapse at zero field due to very fast quantum tunneling of the magnetization (QTM).

UR - https://www.scopus.com/pages/publications/50449091336

U2 - 10.1021/ic800896k

DO - 10.1021/ic800896k

M3 - Article

SN - 1520-510X

VL - 47

SP - 7438

EP - 7442

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 16

ER -

Cobalt(II) Citrate Cubane Single-Molecule Magnet

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Cobalt(II) Citrate Cubane Single-Molecule Magnet

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A new SQUID magnetometer for extreme conditions research

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