In situ TEM and STEM studies of reversible electromigration in thin palladium-platinum bridges

Journal Article (2013)
Author(s)

T. Kozlova (TU Delft - QN/High Resolution Electron Microscopy)

M. Rudneva (TU Delft - QN/High Resolution Electron Microscopy)

HW Zandbergen (TU Delft - QN/High Resolution Electron Microscopy)

Research Group
QN/High Resolution Electron Microscopy
DOI related publication
https://doi.org/10.1088/0957-4484/24/50/505/708
More Info
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Publication Year
2013
Language
English
Research Group
QN/High Resolution Electron Microscopy
Issue number
50
Volume number
24
Pages (from-to)
1-7

Abstract

We investigated the reversible electromigration in Pd-Pt nanobridges by means of in situ electron microscopy. Real-time nanometer-scale imaging with scanning transmission electron microscopy was used to determine the material transport. For high current densities (3-5 x 10(7) A cm(-2)), material transport occurs from the cathode towards the anode side, indicating a negative effective charge. The electromigration is dominated by atom diffusion at grain boundaries on the free surface. The reversal of material transport upon a change of the electric field direction could be the basis of a memristor.

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