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Issue 13, 2003
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High-frequency magnetic spectroscopy on the molecular magnetic cluster V15

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A novel type of high-frequency magnetic resonance spectroscopy was used to investigate magnetic excitations of the molecular magnetic cluster V15 in the frequency range from 1.5 cm−1 to 10 cm−1, at low temperatures, between 2.5 K and 30 K. In the optical transmission spectra, we observed absorption lines over a wide range of magnetic fields up to 6.5 T, which correspond to the Zeeman splitting of the low-lying spin states. Our frequency-domain technique, and advanced data analysis allow accurate determination of the principal values of the anisotropic g tensor, and other mode parameters, even for powder samples. The g values were obtained as g∥c = 1.981 ± 0.003 and gc = 1.953 ± 0.003, while the intrinsic linewidth was found to be Δν = 0.02–0.035 cm−1 (210–370 Oe). The temperature dependence of Δμ, the mode contribution to the magnetic permeability, is in good agreement with theory.

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The article was received on 26 Feb 2003, accepted on 12 May 2003 and first published on 28 May 2003

Article type: Paper
DOI: 10.1039/B302244G
Phys. Chem. Chem. Phys., 2003,5, 2778-2782

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    High-frequency magnetic spectroscopy on the molecular magnetic cluster V15

    S. Vongtragool, B. Gorshunov, A. A. Mukhin, J. van Slageren, M. Dressel and A. Müller, Phys. Chem. Chem. Phys., 2003, 5, 2778
    DOI: 10.1039/B302244G

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