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Smooth transition between SMM and SCM-type slow relaxing dynamics for a 1-D assemblage of {Dy(nitronyl nitroxide)_2} units

机译:{Dy(亚硝酰基氮氧化物)_2}单元的一维组装过程中SMM和SCM型慢弛豫动力学之间的平滑过渡

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摘要

A model example for size effects on the dynamic susceptibility behavior is provided by the chain compound [{Dy(hfac)_3NitPhIm_2}Dy(hfac)_3] (NitPhIm = 2-[4-(1-imidazole)-phenyl]nitronyl nitroxide radical). The Arrhenius plot reveals two relaxation regimes attributed to SMM (Δ = 17.1 K and τ_0 = 17.5 × 10~(-6) s) and SCM (Δ = 82.7 K and τ_0 = 8.8 × 10~(-8) s) behaviors. The ferromagnetic exchange among the spin carriers has been established for the corresponding Gd derivative.
机译:链状化合物[{Dy(hfac)_3NitPhIm_2} Dy(hfac)_3](NitPhIm = 2- [4-(1-咪唑)-苯基]亚硝基硝基氧自由基)提供了尺寸大小对动态磁化系数行为影响的模型示例。 )。 Arrhenius曲线揭示了两种松弛形式,分别归因于SMM(Δ= 17.1 K和τ_0= 17.5×10〜(-6)s)和SCM(Δ= 82.7 K和τ_0= 8.8×10〜(-8)s)行为。自旋载体之间的铁磁交换已针对相应的Gd衍生物建立。

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  • 来源
    《Chemical Communications》 |2010年第15期|p.2566-2568|共3页
  • 作者单位

    Department of Chemistry, Nankai University, Tianjin 300071, China;

    Department of Chemistry, Nankai University, Tianjin 300071, China;

    Department of Chemistry, Nankai University, Tianjin 300071, China;

    Department of Chemistry, Nankai University, Tianjin 300071, China;

    Department of Chemistry, Nankai University, Tianjin 300071, China;

    Department of Chemistry, Nankai University, Tianjin 300071, China;

    CNRS, LCC (Laboratoire de Chimie de Coordination), 205,route de Narbonne, F-31077 Toulouse, France Universite de Toulouse, UPS, INPT, LCC, F-31077 Toulouse,France;

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