Publication detail

Direct visualization and 3D reconstruction of conductive filaments in aSiO2 material-based memristive device

Slang, S. Gu, B. Zhang, B. Janicek, P. Rodriguez-Pereira, J. Wagner, T.

Original Title

Direct visualization and 3D reconstruction of conductive filaments in aSiO2 material-based memristive device

Type

journal article in Web of Science

Language

English

Original Abstract

Observation of conductive filaments has greatly aided the development of theoretical models of memristive devices. In this work, we visualized and reconstructed the conductive filaments in a Cu/Cu-doped SiO2/W device employing a focused ion beam (FIB) as a milling technique. The SEM images taken from the device after 150 DC sweep cycles showed that Joule heat played a vital role in determining the morphology of a conductive filament, where the vaporization of the conductive filament resulted in the creation of defects, including particles, voids, and cavities. The competition between the formation and vaporization of conductive filaments generally induces a remarkable current fluctuation. Since Cu-doped SiO2 was utilized as the electrolyte, the vapors exfoliated adjacent single layers. FIB milling proceeded in top-down and front-back modes; thus, a 3D model of conductive filaments and defects was constructed according to a series of FIB-SEM images. This methodology is promising for a future failure analysis of memristive devices.

Keywords

PERFORMANCE

Authors

Slang, S.; Gu, B.; Zhang, B.; Janicek, P.; Rodriguez-Pereira, J.; Wagner, T.

Released

27. 3. 2024

Publisher

ROYAL SOC CHEMISTRY

Location

CAMBRIDGE

ISBN

1463-9084

Periodical

Physical Chemistry Chemical Physics

Year of study

26

Number

13

State

United Kingdom of Great Britain and Northern Ireland

Pages from

10069

Pages to

10077

Pages count

9

URL

https://pubs.rsc.org/en/content/articlelanding/2024/cp/d4cp00274a

BibTex

@article{BUT188828,
  author="Slang, S. and Gu, B. and Zhang, B. and Janicek, P. and Rodriguez-Pereira, J. and Wagner, T.",
  title="Direct visualization and 3D reconstruction of conductive filaments in aSiO2 material-based memristive device",
  journal="Physical Chemistry Chemical Physics",
  year="2024",
  volume="26",
  number="13",
  pages="10069--10077",
  doi="10.1039/d4cp00274a",
  issn="1463-9084",
  url="https://pubs.rsc.org/en/content/articlelanding/2024/cp/d4cp00274a"
}