Table Of ContentNMR-MRI,μSR and Mössbauer Spectroscopies
in Molecular Magnets
Pietro Carretta Alessandro Lascialfari
NMR-MRI, μSR and
Mössbauer Spectroscopies
in Molecular Magnets
1 3
PIETRO CARRETTA
ALESSANDRO LASCIALFARI
Dipartimento di Fisica “A.Volta”,Università degli Studi di Pavia
Library of Congress Control Number: 2007923021
ISBN 978-88-470-0531-0 Springer Milan Berlin Heidelberg New York
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Preface
This book is a collection of scientific articles on the basic aspects of nuclear
magnetic resonance (NMR), muon spin rotation (μSR) and Mo¨ssbauer spec-
troscopies, applied to the study of molecular magnets and to related systems,
such as low-dimensional magnets and contrast agents for magnetic resonance
imaging (MRI). These articles gather, to a certain extent, the lecture notes
presented by the authors at the Training School on NMR-MRI, μSR and
Mo¨ssbauer Techniques, held in Pavia from the 17th to the 30th of September
2006.
The motivation for the School and for the publication of this book orig-
inates from the growing interest of a broad scientific community to the field
ofmolecularmagnetismwheretheaforementionedtechniquesplayakeyrole.
Nowadays several groups of physicists, of chemists and some groups of biolo-
gists work in this field in order to unravel the fundamental physical aspects
of molecular magnets which are of interest for their future applicability as
storage units, in quantum computation, in hybrid superconducting-magnetic
systems or as contrast agents, for example. Nevertheless, the use and the
knowledge of NMR-MRI, μSR and Mo¨ssbauer spectroscopies is still limited
to a small scientific community. The purpose of the School and of the book
was to introduce these techniques to a broader scientific community working
on molecular magnets and related systems. In particular, to give the basic
principles of each technique, to show which information is derived, for ex-
ample, from the spectra, from the muon depolarization curves or from the
relaxation rates, and how it is complementary to the one obtained by other
techniques. Moreover, it will be shown how from the experimental results de-
rived by these techniques one can tailor the properties of molecular magnets
and nanoparticles which, in turn, can be used as contrast agents for MRI.
The book is addressed to graduate and senior researchers working on
molecular magnets or closely related areas, having a background on quan-
tum mechanics. It is divided into three main parts, each one dedicated to a
different spectroscopy. The first chapter of each part is a short tutorial intro-
duction to each one of the spectroscopies. Since an exhaustive introduction is
VI Preface
out of the aim of this book, reference is properly made to text books and to
websiteswhichallowadeeperunderstandingofthebasicprinciplesunderlay-
ingthesetechniques.Thisintroductorychapterisfollowedbymorespecialized
ones giving an overview on recent results obtained by NMR, μSR and Mo¨ss-
bauer spectroscopies in molecular magnets and in strictly related areas. Two
chapters of the first part are dedicated to MRI and to the investigation of
contrast agents suitable for applications in MRI.
We would like to acknowledge MAGMANet network of excellence for
supporting the School and the publication of this book. CNR-INFM and
CNISM secretaries Stefania Riboni, Antonella Biondi, Elisa Bolognesi and
Maria Grazia Angelini are also acknowledged for their precious help.
Pavia, Pietro Carretta
March 2007 Alessandro Lascialfari
Contents
Part I Nuclear Magnetic Resonance
A short introduction to Nuclear Magnetic Resonance
Pietro Carretta .................................................. 3
NMR in magnetic single molecule magnets
Ferdinando Borsa ................................................ 29
Structure, synthesis and characterization of contrast agents
for magnetic resonance molecular imaging
Sophie Laurent, Luce Vander Elst, Alain Roch, Robert N. Muller....... 71
Basic concepts of Magnetic Resonance Imaging
Alessandro Lascialfari, Maurizio Corti.............................. 89
Phases, phase transitions and spin dynamics in strongly
correlated electron systems, from antiferromagnets to HT
C
superconductors: NMR-NQR insights
A. Rigamonti, F. Tedoldi .........................................111
Part II Muon Spin Rotation
Introduction to μSR.
Roberto De Renzi ................................................149
Muon spin rotation of organic compounds
Stephen J Blundell ...............................................179
Stochastic Landau-Zener model, and experimental estimates
of dephasing time in molecular magnets.
Amit Keren .....................................................209
VIII Contents
Part III M¨ossbauer Spectroscopy
Basic principles of M¨ossbauer spectroscopy and applications
George Filoti ....................................................225
Line shape of Mo¨ssbauer relaxation spectra
Gabriele Spina, Luciano Cianchi...................................249
Studies of spin fluctuations in single molecular magnets by
using Mo¨ssbauer spectroscopy
Luciano Cianchi, Gabriele Spina...................................277
List of Contributors
Stephen J. Blundell University of Pavia
Oxford University Via Bassi, 6 - 27100Pavia
Department of Physics (Italy)
Clarendon Laboratory, [email protected]
ParksRoad, Oxford OX1-3PU
(United Kingdom) Roberto De Renzi
Department of Physics and CNISM,
[email protected]
Viale G.P. Usberti, 7a
Ferdinando Borsa I-43100 Parma
Dipartimento di Fisica ”A.Volta” - (Italy)
University of Pavia [email protected]
Via Bassi, 6 -27100 Pavia
(Italy) George Filoti
[email protected] National Institute for Materials
Physics
Pietro Carretta P.O. Box MG-07, 77125
Dipartimento di Fisica ”A.Volta” - Bucharest-Magurele
University of Pavia (Romania)
Via Bassi, 6 -27100 Pavia [email protected]
(Italy)
Amit Keren
[email protected]
Technion-Israel Institute of
Luciano Cianchi Technology, Physics Department
Istituto dei Sistemi Complessi Haifa 32000
(Sezione di Firenze)-CNR, (Israel)
Via Madonna del Piano, 10 [email protected]
50019 Sesto Fiorentino, Firenze
(Italy) Alessandro Lascialfari
Institute of General Physiology and
[email protected]
Biological Chemistry ”G. Esposito”
Maurizio Corti University of Milano
Dipartimento di Fisica ”A.Volta” - Via Trentacoste 2, I-20134 Milano
X List of Contributors
(Italy) Biomedical Chemistry
[email protected] NMR and Molecular Imaging
Laboratory
Sophie Laurent University of Mons-Hainaut
Department of General, Organic and B-7000 Mons
Biomedical Chemistry (Belgium)
NMR and Molecular Imaging [email protected]
Laboratory
University of Mons-Hainaut
Gabriele Spina
B-7000 Mons
Dipartimento di Fisica
(Belgium)
University of Firenze
[email protected] Via G. Sansone,1
50019 SestoFiorentino, Firenze
Robert N. Muller
(Italy)
Department of General, Organic and
[email protected]
Biomedical Chemistry
NMR and Molecular
Fabio Tedoldi
Imaging Laboratory
Bruker BioSpin S.r.l.
University of Mons-Hainaut
Via Pascoli 70/3, I-20133 Milano
B-7000 Mons
(Italy)
(Belgium)
[email protected]
[email protected]
Attilio Rigamonti Luce Vander Elst
Dipartimento di Fisica ”A.Volta” - Department of General, Organic and
University of Pavia Biomedical Chemistry
Via Bassi, 6 -27100 Pavia NMR and Molecular
(Italy) Imaging Laboratory
[email protected] University of Mons-Hainaut
B-7000 Mons
Alain Roch (Belgium)
Department of General, Organic and [email protected]
Part I
Nuclear Magnetic Resonance
