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Magnetic and electronic properties of the iron-containing polyoxotungstate [Fe4(H2O)10(β-SbW9O33)2]6-

Prinz, M.; Takács, A.; Schnack, J.; Balasz, I.; Burzo, E.; Kortz, U.; Kuepper, K.; Neumann, M.
The magnetic and X-ray photoelectron spectroscopy (XPS) studies on the transition metal substituted, dimeric polyoxotungstate [Fe4(H2O)10(β-SbW9O33)2]6- are reported. The magnetic data were analysed by using an isotropic Heisenberg Hamiltonian. The ground state of the frustrated molecule has a total spin of S = 2. The XPS Fe 2p spectra suggest a 2+ formal valence state. The deviation from the contained Fe3+ ions can be explained by charge-transfer e®ects.
Keywords: magnetic molecules, polyoxotungstates, Heisenberg model, magnetization measurements, x-ray photoelectron spectroscopy
  • Journal of Applied Physics 99(2006), 08J505-1-08J505-3
    DOI: 10.1063/1.2173613
  • Poster
    Magnetism and Magnetic Materials Conference, 30.10.-03.11.2005, San Jose, USA


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Publ.-Id: 7658