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.
Magnetic Anisotropy of Cr7Ni Spin Clusters on Surfaces / Valdis, Corradini; Alberto, Ghirri; Elena, Garlatti; Biagi, Roberto; DE RENZI, Valentina; DEL PENNINO, Umberto; Valerio, Bellini; Stefano, Carretta; Paolo, Santini; Grigore, Timco; Richard E. P., Winpenny; Affronte, Marco. - In: ADVANCED FUNCTIONAL MATERIALS. - ISSN 1616-301X. - STAMPA. - 22:(2012), pp. 3706-3713. [10.1002/adfm.201200478]
Magnetic Anisotropy of Cr7Ni Spin Clusters on Surfaces
BIAGI, Roberto;DE RENZI, Valentina;DEL PENNINO, Umberto;AFFRONTE, Marco
2012
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.
| File | Dimensione | Formato | |
|---|---|---|---|
|
papero.pdf
Accesso riservato
Tipologia:
Versione dell'autore revisionata e accettata per la pubblicazione
Dimensione
3.17 MB
Formato
Adobe PDF
|
3.17 MB | Adobe PDF | Visualizza/Apri Richiedi una copia |
Pubblicazioni consigliate
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris
