NMR and μSR investigation of spin dynamics in {Mo72Fe 30} molecular clusters

E. Micotti; D. Procissi; A. Lascialfari; P. Carretta; P. Kögerler; F. Borsa; M. Luban; C. Baines

doi:10.1016/j.jmmm.2003.12.038

NMR and μSR investigation of spin dynamics in {Mo₇₂Fe ₃₀} molecular clusters

E. Micotti^*, D. Procissi, A. Lascialfari, P. Carretta, P. Kögerler, F. Borsa, M. Luban, C. Baines

^*Corresponding author for this work

Radiology

Research output: Contribution to journal › Conference article › peer-review

5 Scopus citations

Abstract

We present μ⁺SR and proton NMR data on the molecular cluster {Mo₇₂Fe₃₀} in its standard form (std-Fe30) and in its layered form (lay-Fe30) where the quasi-spherical molecules form a grid. μ⁺SR experiments on std-Fe30 as a function of the magnetic field at T≈30mK showed that the muon asymmetry has two components, corresponding to different muon sites, near and far from the magnetic ions. At the level crossing we observed an onset of local fields but no anomaly in the relaxation rate. Also a small effect of the spin topology was observed by means of ¹H NMR.

Original language	English (US)
Pages (from-to)	1099-1101
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	272-276
DOIs	https://doi.org/10.1016/j.jmmm.2003.12.038
State	Published - May 2004
Event	Proceedings of the International Conference on Magnetism - Rome, Italy Duration: Jul 27 2003 → Aug 1 2003

Keywords

Level crossing
MuSR
Nanomagnet
Proton NMR

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2003.12.038

Cite this

@article{4e6fe40b431146af8dd5daf782369579,

title = "NMR and μSR investigation of spin dynamics in {Mo72Fe 30} molecular clusters",

abstract = "We present μ+SR and proton NMR data on the molecular cluster {Mo72Fe30} in its standard form (std-Fe30) and in its layered form (lay-Fe30) where the quasi-spherical molecules form a grid. μ+SR experiments on std-Fe30 as a function of the magnetic field at T≈30mK showed that the muon asymmetry has two components, corresponding to different muon sites, near and far from the magnetic ions. At the level crossing we observed an onset of local fields but no anomaly in the relaxation rate. Also a small effect of the spin topology was observed by means of 1H NMR.",

keywords = "Level crossing, MuSR, Nanomagnet, Proton NMR",

author = "E. Micotti and D. Procissi and A. Lascialfari and P. Carretta and P. K{\"o}gerler and F. Borsa and M. Luban and C. Baines",

year = "2004",

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doi = "10.1016/j.jmmm.2003.12.038",

language = "English (US)",

volume = "272-276",

pages = "1099--1101",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - NMR and μSR investigation of spin dynamics in {Mo72Fe 30} molecular clusters

AU - Micotti, E.

AU - Procissi, D.

AU - Lascialfari, A.

AU - Carretta, P.

AU - Kögerler, P.

AU - Borsa, F.

AU - Luban, M.

AU - Baines, C.

PY - 2004/5

Y1 - 2004/5

N2 - We present μ+SR and proton NMR data on the molecular cluster {Mo72Fe30} in its standard form (std-Fe30) and in its layered form (lay-Fe30) where the quasi-spherical molecules form a grid. μ+SR experiments on std-Fe30 as a function of the magnetic field at T≈30mK showed that the muon asymmetry has two components, corresponding to different muon sites, near and far from the magnetic ions. At the level crossing we observed an onset of local fields but no anomaly in the relaxation rate. Also a small effect of the spin topology was observed by means of 1H NMR.

AB - We present μ+SR and proton NMR data on the molecular cluster {Mo72Fe30} in its standard form (std-Fe30) and in its layered form (lay-Fe30) where the quasi-spherical molecules form a grid. μ+SR experiments on std-Fe30 as a function of the magnetic field at T≈30mK showed that the muon asymmetry has two components, corresponding to different muon sites, near and far from the magnetic ions. At the level crossing we observed an onset of local fields but no anomaly in the relaxation rate. Also a small effect of the spin topology was observed by means of 1H NMR.

KW - Level crossing

KW - MuSR

KW - Nanomagnet

KW - Proton NMR

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DO - 10.1016/j.jmmm.2003.12.038

M3 - Conference article

AN - SCOPUS:2642558965

SN - 0304-8853

VL - 272-276

SP - 1099

EP - 1101

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

T2 - Proceedings of the International Conference on Magnetism

Y2 - 27 July 2003 through 1 August 2003

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