Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany).
JARA-Fundamentals of Future Information Technologies, RWTH Aachen University, Ahornstrasse 55, 52074 Aachen (Germany).
Angew Chem Int Ed Engl. 2015 May 26;54(22):6632-6. doi: 10.1002/anie.201500304. Epub 2015 Apr 13.
We introduce a novel solvothermal synthesis of individual single crystalline Sb2 Te3 micro- and nanocrystals as a model material for phase-change switching. We identified different intermediates along the reaction path to the final Sb2 Te3 hexagonal platelets (HPs) and discuss their forming mechanism. By means of nanodiffraction (ND) in a scanning transmission electron microscope we demonstrate that the intermediates follow a hexagonal shape evolution in the amorphous state. In situ nanomanipulator measurements reveal electrical phase-change switching properties of the individual Sb2 Te3 hexagonal platelets.
我们介绍了一种新的溶剂热合成方法，用于合成单个的单晶体 Sb2 Te3 微纳米晶体，作为相变开关的模型材料。我们确定了反应路径中不同的中间体，最终得到 Sb2 Te3 六方薄片（HPs），并讨论了它们的形成机制。通过扫描透射电子显微镜中的纳米衍射（ND），我们证明了中间体在非晶态下遵循六方形状的演变。原位纳米操纵器测量揭示了单个 Sb2 Te3 六方薄片的电相变开关性能。
