Issue |
Europhys. Lett.
Volume 42, Number 6, June II 1998
|
|
---|---|---|
Page(s) | 691 - 694 | |
Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
DOI | https://doi.org/10.1209/epl/i1998-00307-8 | |
Published online | 01 September 2002 |
Deuteron NMR of a manganese-ion cluster nanomagnet
1
J. Stefan Institute, University of Ljubljana - Ljubljana, Slovenia
2
Laboratorium für Festkörperphysik, ETH Hönggerberg - Zürich, Switzerland
3
Department of Chemistry and National High Magnetic
Field Laboratory, Florida State University - Tallahassee, FL 32306-4390, USA
Received:
4
February
1998
Accepted:
27
April
1998
The temperature dependence of deuteron NMR spectra of the fully deuterated manganese ion
cluster nanomagnet -acetate has been measured. Two sets of deuteron peaks have been
observed which both shift towards lower fields with decreasing temperature. The strongly
shifted peak is associated with the deuterons of the four
molecules which are directly
attached to the Mn core. The less shifted peak is due to the
deuterons, which are three
bonds away from the oxygen that is attached to Mn ions, as well as to the solvated
and
molecules. The results imply that the unpaired spin density extends over the whole
molecular cluster rather than being concentrated at the Mn ions.
PACS: 75.45.+j – Macroscopic quantum phenomena in magnetic systems / 75.50.Tt – Fine-particle systems / 76.60.Cq – Chemical and Knight shifts
© EDP Sciences, 1998
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