ISSN:
1434-6036
Schlagwort(e):
PACS. 33.35.+r Electron resonance and relaxation – 36.40.-c Atomic and molecular clusters – 75.20.-g Diamagnetism, paramagnetism, and superparamagnetism – 75.75.+a Magnetic properties of nanostructures
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract: The magnetic properties of the cyclic compound [Fe6(bicine)6] LiClO4 . 2MeOH are reported. The cluster Fe6(bicine)6 forms an antiferromagnetically coupled ring structure of Fe III ions. The magnetic susceptibility is measured between 2 and 300 K and yields the exchange coupling of J/k B = - 27.5±0.5 K. The field dependence of the magnetic moment is studied at 3 and 6 K in magnetic fields up to 5 T. The zero-field splitting of the first excited spin states with S = 2 and 3 are determined by ESR at 94 GHz. The intra-molecular interactions of the Fe III ions are analyzed and the on-site anisotropy of the Fe III due to the ligand-configuration is determined to d /k B = - 0.633±0.008K.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1140/epjb/e2003-00172-9
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