http://www.cnr.it/ontology/cnr/individuo/prodotto/ID190656
Magnetic anisotropy of Cr7Ni spin clusters on surfaces (Articolo in rivista)
- Type
- Label
- Magnetic anisotropy of Cr7Ni spin clusters on surfaces (Articolo in rivista) (literal)
- Anno
- 2012-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1002/adfm.201200478 (literal)
- Alternative label
V. Corradini, A. Ghirri , E. Garlatti , R. Biagi , V. De Renzi ,
U. del Pennino , V. Bellini , S. Carretta , P. Santini , G. Timco ,
R. E. P. Winpenny , and M. Affronte (2012)
Magnetic anisotropy of Cr7Ni spin clusters on surfaces
in Advanced functional materials (Print)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- V. Corradini, A. Ghirri , E. Garlatti , R. Biagi , V. De Renzi ,
U. del Pennino , V. Bellini , S. Carretta , P. Santini , G. Timco ,
R. E. P. Winpenny , and M. Affronte (literal)
- Pagina inizio
- Pagina fine
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- Rivista
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Dr. V. Corradini , Dr. A. Ghirri , Dr. V. Bellini
S3 Centre, Institute Nanoscience - CNR,
via G. Campi 213/A, 41125 Modena, Italy
E-mail: valdis.corradini@unimore.it
Dr. E. Garlatti
Dipartimento di Scienze Molecolari Applicate ai Biosistemi
Università di Milano
via Trentacoste 2, 20134 Milano, Italy
Dr. R. Biagi , Dr. V. De Renzi , Prof. U. del Pennino , Prof. M. Affronte
Dipartimento di Fisica
Università di Modena e Reggio Emilia and S3 Centre
Institute Nanoscience - CNR via G. Campi 213/A, 41125 Modena, Italy
Prof. S. Carretta , Prof. P. Santini
Dipartimento di Fisica
Università di Parma
v.le delle Scienze, 43100 Parma, Italy
Dr. G. Timco , Prof. R. E. P. Winpenny
School of Chemistry and Photon Science Institute
University of Manchester
Oxford Road, Manchester, M13 9PL, UK (literal)
- Titolo
- Magnetic anisotropy of Cr7Ni spin clusters on surfaces (literal)
- Abstract
- The problem of the experimental and theoretical determination of magnetic
anisotropy in isolated molecular spin clusters is addressed here. To this end,
the case of molecular Cr 7 Ni rings sublimated in ultrahigh vacuum conditions
and assembled in an ordered fashion on Au(111) surface is addressed and
investigated using X-ray magnetic dichroism (XMCD) and theoretical calculations.
Fixing the experimental conditions at a temperature T = 8 K and a
magnetic fi eld of 5 T, the angular-dependence of the dichroic signal reveals an
easy-axis anisotropy for the Ni magnetization along the direction perpendicular
to the ring while the magnetization of the whole Cr 7 Ni molecule is preferentially
aligned within the ring plane. These features are well reproduced by
spin Hamiltonian simulations, which refl ect the character of the
S = 3/2 fi rst excited multiplet, dominating at T = 8 K and 5 T. Density functional
theory (DFT) calculations show that local spin orbit interactions determine
an easy axis anisotropy at the Ni site while the Cr magnetic moment
turns out to be more isotropic. This is the fi rst direct observation of the interplay
between the single ion and the overall magnetic anisotropy in complex
(polynuclear) molecular systems. (literal)
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- Autore CNR
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