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Issue 38, 2013
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Single-molecule magnet [Tb(hfac)3(2pyNO)] (2pyNO = t-butyl 2-pyridyl nitroxide) with a relatively high barrier of magnetization reversal

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Abstract

The crystallographic analysis of the title compound shows that there are two crystallographically independent molecules in a unit cell. The magnetic study clarified that every molecule behaved as a single-molecule magnet. Two series of the out-of-phase ac susceptibility signals appeared around 10 K even at zero dc field. The activation energies (Δ) for the magnetization reversal were estimated as Δ(1)/kB = 39.2(3) K with τ0(1) = 4.2(4) × 10−8 s and Δ(2)/kB = 36(2) K with τ0(2) = 4.1(12) × 10−7 s, where τ0 stands for the pre-exponential factor in the Arrhenius analysis. Magnetic hysteresis was recorded at 1.6 K by means of a pulsed-field technique. The role of exchange coupling is discussed.

Graphical abstract: Single-molecule magnet [Tb(hfac)3(2pyNO)] (2pyNO = t-butyl 2-pyridyl nitroxide) with a relatively high barrier of magnetization reversal

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Publication details

The article was received on 03 Jul 2013, accepted on 22 Jul 2013 and first published on 23 Jul 2013


Article type: Paper
DOI: 10.1039/C3DT51784E
Citation: Dalton Trans., 2013,42, 13968-13973
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    Single-molecule magnet [Tb(hfac)3(2pyNO)] (2pyNO = t-butyl 2-pyridyl nitroxide) with a relatively high barrier of magnetization reversal

    R. Murakami, T. Ishida, S. Yoshii and H. Nojiri, Dalton Trans., 2013, 42, 13968
    DOI: 10.1039/C3DT51784E

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