Evidence of Slow Magnetic Relaxation in Co(AcO)2(py)2(H2O)2

James P S Walsh; Graeme Bowling; Ana-Maria Ariciu; Nur Jailani; Nicholas Chilton; Paul G.Waddell; David Collison; Floriana Tuna; Lee J. Higham

doi:10.3390/magnetochemistry2020023

Evidence of Slow Magnetic Relaxation in Co(AcO)2(py)2(H2O)2

James P S Walsh, Graeme Bowling, Ana-Maria Ariciu, Nur Jailani, Nicholas Chilton, Paul G.Waddell, David Collison, Floriana Tuna, Lee J. Higham

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Abstract

The monometallic pseudo-octahedral complex, [Co(H2O)2(CH3COO)2(C5H5N)2], is shown to exhibit slow magnetic relaxation under an applied field of 1500 Oe. The compound is examined by
a combination of experimental and computational techniques in order to elucidate the nature of its electronic structure and slow magnetic relaxation. We demonstrate that any sensible model of the electronic structure must include a proper treatment of the first-order orbital angular momentum,
and we find that the slow magnetic relaxation can be well described by a two-phonon Raman process dominating at high temperature, with a temperature independent quantum tunnelling pathway being most efficient at low temperature.

Original language	English
Article number	23
Pages (from-to)	1-10
Number of pages	11
Journal	Magnetochemistry
Volume	2
Issue number	2
Early online date	20 Apr 2016
DOIs	https://doi.org/10.3390/magnetochemistry2020023
Publication status	Published - 2016

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title = "Evidence of Slow Magnetic Relaxation in Co(AcO)2(py)2(H2O)2",

abstract = "The monometallic pseudo-octahedral complex, [Co(H2O)2(CH3COO)2(C5H5N)2], is shown to exhibit slow magnetic relaxation under an applied field of 1500 Oe. The compound is examined bya combination of experimental and computational techniques in order to elucidate the nature of its electronic structure and slow magnetic relaxation. We demonstrate that any sensible model of the electronic structure must include a proper treatment of the first-order orbital angular momentum,and we find that the slow magnetic relaxation can be well described by a two-phonon Raman process dominating at high temperature, with a temperature independent quantum tunnelling pathway being most efficient at low temperature.",

author = "Walsh, {James P S} and {Graeme Bowling} and Ana-Maria Ariciu and Nur Jailani and Nicholas Chilton and {Paul G.Waddell} and David Collison and Floriana Tuna and {Lee J. Higham}",

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T1 - Evidence of Slow Magnetic Relaxation in Co(AcO)2(py)2(H2O)2

AU - Walsh, James P S

AU - Graeme Bowling,

AU - Ariciu, Ana-Maria

AU - Jailani, Nur

AU - Chilton, Nicholas

AU - Paul G.Waddell,

AU - Collison, David

AU - Tuna, Floriana

AU - Lee J. Higham,

PY - 2016

Y1 - 2016

N2 - The monometallic pseudo-octahedral complex, [Co(H2O)2(CH3COO)2(C5H5N)2], is shown to exhibit slow magnetic relaxation under an applied field of 1500 Oe. The compound is examined bya combination of experimental and computational techniques in order to elucidate the nature of its electronic structure and slow magnetic relaxation. We demonstrate that any sensible model of the electronic structure must include a proper treatment of the first-order orbital angular momentum,and we find that the slow magnetic relaxation can be well described by a two-phonon Raman process dominating at high temperature, with a temperature independent quantum tunnelling pathway being most efficient at low temperature.

AB - The monometallic pseudo-octahedral complex, [Co(H2O)2(CH3COO)2(C5H5N)2], is shown to exhibit slow magnetic relaxation under an applied field of 1500 Oe. The compound is examined bya combination of experimental and computational techniques in order to elucidate the nature of its electronic structure and slow magnetic relaxation. We demonstrate that any sensible model of the electronic structure must include a proper treatment of the first-order orbital angular momentum,and we find that the slow magnetic relaxation can be well described by a two-phonon Raman process dominating at high temperature, with a temperature independent quantum tunnelling pathway being most efficient at low temperature.

U2 - 10.3390/magnetochemistry2020023

DO - 10.3390/magnetochemistry2020023

M3 - Article

SN - 2312-7481

VL - 2

SP - 1

EP - 10

JO - Magnetochemistry

JF - Magnetochemistry

IS - 2

M1 - 23

ER -

Evidence of Slow Magnetic Relaxation in Co(AcO)2(py)2(H2O)2

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