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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Magnetic properties of transition metal dimers probed by inelastic neutron scattering
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Magnetic properties of transition metal dimers probed by inelastic neutron scattering

机译:非弹性中子散射探测过渡金属二聚体的磁性

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摘要

The physical characterisation and understanding of molecular magnetic materials is one of the most important steps towards the integration of such systems in hybrid spintronic devices. Amongst the many characterisation techniques employed in such a task, Inelastic Neutron Scattering (INS) stands as one of the most powerful and sensitive tools to investigate their spin dynamics. Herein, the magnetic properties and spin dynamics of two dinuclear complexes, namely [(M(hfacac) _(2) ) _(2) (bpym)] (where M = Ni ~(2+) , Co ~(2+) , abbreviated in the following as Ni _( 2 ) , Co _( 2 ) ) are reported. These are model systems that could constitute fundamental units of future spintronic devices. By exploiting the highly sensitive IN5 Cold INS spectrometer, we are able to gain a deep insight into the spin dynamics of Ni _( 2 ) and to fully obtain the microscopic spin Hamiltonian parameters; while for Co _( 2 ) , a multitude of INS transitions are observed demonstrating the complexity of the magnetic properties of octahedral cobalt-based systems.
机译:分子磁性材料的物理特征和理解是朝向混合旋转式装置中这些系统集成的最重要步骤之一。在这样的任务中使用的许多表征技术中,无弹性中子散射(INS)被占据最强大而敏感的工具之一,以研究其自旋动态。在本文中,两种二核配合物的磁性和旋转动力学,即[(m(hfacac)_(2))_(2)(Bpym)](其中m = ni〜(2+),co〜(2+) ,缩写为NI _(2),报告了CO _(2))。这些是模型系统,可以构成未来的旋转式设备的基本单元。通过利用高度敏感的In5冷INS光谱仪,我们能够深入了解NI _(2)的自旋动态,并充分获得微观自旋哈密顿参数;虽然对于CO_(2),但观察到众多的INS转换,证明了基于八面体钴的系统的磁性特性的复杂性。

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