Nanostructured ternary compounds prepared by focused particle-beam induced deposition

该方案的目的是通过聚焦电子束和聚焦离子束诱导沉积(FEBID和FIBID)来制备具有有趣的自旋电子和热电性质的纳米三元化合物，并研究它们的结构、电学、热电和磁输运性质。制备方法是聚焦电子束/离子束辅助化学气相沉积，其中几种前体气体同时用于形成多组分功能纳米结构。由于它们潜在的广泛应用领域，该提案侧重于Heusler纳米结构化合物的研究和功能化。特别是，将分析尺寸效应(离散能级间距、库仑阻塞)和晶间隧道耦合对潜在技术相关化合物的输运性质的影响，例如用于自旋电子学的纳米颗粒Co2FeSi和Co2MnSi，以及用于热电应用的TiNiSn.

The aim of this proposal is to fabricate nanostructured ternary compounds with interesting spintronic and thermoelectric properties by means of focused electron- and focused ion-beam induced deposition (FEBID and FIBID) and to investigate their structural, electrical, thermoelectrical and magneto-transport properties. The fabrication method is a focused electron/ion beam assisted chemical-vapor-deposition where several precursor gases are simultaneously used to form multi-component functional nanostructures. Owing to their potentially wide field of applications, the proposal focuses on the investigation and functionalization of Heusler nanostructured compounds. In particular, the role played by size effects (discrete energy level spacing, Coulomb blockade) and inter-grain tunnel coupling on the transport properties of potentially technologically relevant compounds, such as nano-granular Co2FeSi and Co2MnSi, for spintronics and TiNiSn, for thermoelectric applications, will be analyzed.