Shape without Structure: An Intriguing Formation Mechanism in the Solvothermal Synthesis of the Phase‐Change Material Sb 2 Te 3 | Zendy

Saltzmann Tobias | Zendy; Bornhöfft Manuel | Zendy; Mayer Joachim | Zendy; Simon Ulrich | Zendy

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Shape without Structure: An Intriguing Formation Mechanism in the Solvothermal Synthesis of the Phase‐Change Material Sb 2 Te 3

Author(s) -

Saltzmann Tobias,

Bornhöfft Manuel,

Mayer Joachim,

Simon Ulrich

Publication year - 2015

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.201500304

Subject(s) - hexagonal crystal system , materials science , amorphous solid , transmission electron microscopy , phase (matter) , nanocrystal , nanotechnology , solvothermal synthesis , phase change , crystallography , mechanism (biology) , scanning electron microscope , chemistry , composite material , engineering physics , physics , organic chemistry , quantum mechanics

We introduce a novel solvothermal synthesis of individual single crystalline Sb 2 Te 3 micro‐ and nanocrystals as a model material for phase‐change switching. We identified different intermediates along the reaction path to the final Sb 2 Te 3 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 Sb 2 Te 3 hexagonal platelets.

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