Magnetization and spin dynamics of a Cr-based magnetic cluster: Cr7 Ni

A. Bianchi; S. Carretta; P. Santini; G. Amoretti; Y. Furukawa; K. Kiuchi; Y. Ajiro; Y. Narumi; K. Kindo; J. Lago; E. Micotti; P. Arosio; A. Lascialfari; F. Borsa; G. Timco; R. E P Winpenny

doi:10.1016/j.jmmm.2009.03.006

Magnetization and spin dynamics of a Cr-based magnetic cluster: Cr7 Ni

A. Bianchi
, S. Carretta
, P. Santini
, G. Amoretti
, Y. Furukawa
, K. Kiuchi
, Y. Ajiro
, Y. Narumi
, K. Kindo
, J. Lago
, E. Micotti
, P. Arosio
, A. Lascialfari
, F. Borsa
, G. Timco
, R. E P Winpenny

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

Abstract

We study the magnetization and the spin dynamics of the Cr7 Ni ring-shaped magnetic cluster. Measurements of the magnetization at high pulsed fields and low temperature are compared to calculations and show that the spin Hamiltonian approach provides a good description of the Cr7 Ni magnetic molecule. In addition, the phonon-induced relaxation dynamics of molecular observables has been investigated. By assuming the spin-phonon coupling to take place through the modulation of the local crystal fields, it is possible to evaluate the decay of fluctuations of two generic molecular observables. The nuclear spin-lattice relaxation rate 1 / T1 directly probes such fluctuations, and allows to determine the magnetoelastic coupling strength. © 2009 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	1262-1264
Number of pages	2
Journal	Journal of Magnetism and Magnetic Materials
Volume	322
Issue number	9-12
DOIs	https://doi.org/10.1016/j.jmmm.2009.03.006
Publication status	Published - May 2010

Keywords

Magnetic molecules
NMR
Relaxation dynamics

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10.1016/j.jmmm.2009.03.006

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Bianchi, A., Carretta, S., Santini, P., Amoretti, G., Furukawa, Y., Kiuchi, K., Ajiro, Y., Narumi, Y., Kindo, K., Lago, J., Micotti, E., Arosio, P., Lascialfari, A., Borsa, F., Timco, G., & Winpenny, R. E. P. (2010). Magnetization and spin dynamics of a Cr-based magnetic cluster: Cr7 Ni. Journal of Magnetism and Magnetic Materials, 322(9-12), 1262-1264. https://doi.org/10.1016/j.jmmm.2009.03.006

@article{a54f8cfc7b91419987b69b80965232c7,

title = "Magnetization and spin dynamics of a Cr-based magnetic cluster: Cr7 Ni",

abstract = "We study the magnetization and the spin dynamics of the Cr7 Ni ring-shaped magnetic cluster. Measurements of the magnetization at high pulsed fields and low temperature are compared to calculations and show that the spin Hamiltonian approach provides a good description of the Cr7 Ni magnetic molecule. In addition, the phonon-induced relaxation dynamics of molecular observables has been investigated. By assuming the spin-phonon coupling to take place through the modulation of the local crystal fields, it is possible to evaluate the decay of fluctuations of two generic molecular observables. The nuclear spin-lattice relaxation rate 1 / T1 directly probes such fluctuations, and allows to determine the magnetoelastic coupling strength. {\textcopyright} 2009 Elsevier B.V. All rights reserved.",

keywords = "Magnetic molecules, NMR, Relaxation dynamics",

author = "A. Bianchi and S. Carretta and P. Santini and G. Amoretti and Y. Furukawa and K. Kiuchi and Y. Ajiro and Y. Narumi and K. Kindo and J. Lago and E. Micotti and P. Arosio and A. Lascialfari and F. Borsa and G. Timco and Winpenny, \{R. E P\}",

year = "2010",

month = may,

doi = "10.1016/j.jmmm.2009.03.006",

language = "English",

volume = "322",

pages = "1262--1264",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier BV",

number = "9-12",

}

Bianchi, A, Carretta, S, Santini, P, Amoretti, G, Furukawa, Y, Kiuchi, K, Ajiro, Y, Narumi, Y, Kindo, K, Lago, J, Micotti, E, Arosio, P, Lascialfari, A, Borsa, F, Timco, G & Winpenny, REP 2010, 'Magnetization and spin dynamics of a Cr-based magnetic cluster: Cr7 Ni', Journal of Magnetism and Magnetic Materials, vol. 322, no. 9-12, pp. 1262-1264. https://doi.org/10.1016/j.jmmm.2009.03.006

TY - JOUR

T1 - Magnetization and spin dynamics of a Cr-based magnetic cluster: Cr7 Ni

AU - Bianchi, A.

AU - Carretta, S.

AU - Santini, P.

AU - Amoretti, G.

AU - Furukawa, Y.

AU - Kiuchi, K.

AU - Ajiro, Y.

AU - Narumi, Y.

AU - Kindo, K.

AU - Lago, J.

AU - Micotti, E.

AU - Arosio, P.

AU - Lascialfari, A.

AU - Borsa, F.

AU - Timco, G.

AU - Winpenny, R. E P

PY - 2010/5

Y1 - 2010/5

N2 - We study the magnetization and the spin dynamics of the Cr7 Ni ring-shaped magnetic cluster. Measurements of the magnetization at high pulsed fields and low temperature are compared to calculations and show that the spin Hamiltonian approach provides a good description of the Cr7 Ni magnetic molecule. In addition, the phonon-induced relaxation dynamics of molecular observables has been investigated. By assuming the spin-phonon coupling to take place through the modulation of the local crystal fields, it is possible to evaluate the decay of fluctuations of two generic molecular observables. The nuclear spin-lattice relaxation rate 1 / T1 directly probes such fluctuations, and allows to determine the magnetoelastic coupling strength. © 2009 Elsevier B.V. All rights reserved.

AB - We study the magnetization and the spin dynamics of the Cr7 Ni ring-shaped magnetic cluster. Measurements of the magnetization at high pulsed fields and low temperature are compared to calculations and show that the spin Hamiltonian approach provides a good description of the Cr7 Ni magnetic molecule. In addition, the phonon-induced relaxation dynamics of molecular observables has been investigated. By assuming the spin-phonon coupling to take place through the modulation of the local crystal fields, it is possible to evaluate the decay of fluctuations of two generic molecular observables. The nuclear spin-lattice relaxation rate 1 / T1 directly probes such fluctuations, and allows to determine the magnetoelastic coupling strength. © 2009 Elsevier B.V. All rights reserved.

KW - Magnetic molecules

KW - NMR

KW - Relaxation dynamics

U2 - 10.1016/j.jmmm.2009.03.006

DO - 10.1016/j.jmmm.2009.03.006

M3 - Article

SN - 0304-8853

VL - 322

SP - 1262

EP - 1264

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 9-12

ER -

Magnetization and spin dynamics of a Cr-based magnetic cluster: Cr7 Ni

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