Journal Article

FZJ-2018-05987

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Au Nanoparticles as Template for Defect Formation in Memristive SrTiO3 Thin Films

Raab, N. ; Schmidt, D. O. ; Du, H.FZJ* ; Kruth, M.FZJ* ; Simon, U. ; Dittmann, R. (Corresponding author)FZJ*

2018
MDPI Basel

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Please use a persistent id in citations: http://hdl.handle.net/2128/19848  doi:10.3390/nano8110869

Abstract: We investigated the possibility of tuning the local switching properties of memristive crystalline SrTiO 3 thin films by inserting nanoscale defect nucleation centers. For that purpose, we employed chemically-synthesized Au nanoparticles deposited on 0.5 wt%-Nb-doped SrTiO 3 single crystal substrates as a defect formation template for the subsequent growth of SrTiO 3 . We studied in detail the resulting microstructure and the local conducting and switching properties of the SrTiO 3 thin films. We revealed that the Au nanoparticles floated to the SrTiO 3 surface during growth, leaving behind a distorted thin film region in their vicinity. By employing conductive-tip atomic force microscopy, these distorted SrTiO 3 regions are identified as sites of preferential resistive switching. These findings can be attributed to the enhanced oxygen exchange reaction at the surface in these defective regions

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Contributing Institute(s):

1. Elektronische Materialien (PGI-7)
2. JARA-FIT (JARA-FIT)
3. Materialwissenschaft u. Werkstofftechnik (ER-C-2)

Research Program(s):

1. 521 - Controlling Electron Charge-Based Phenomena (POF3-521) (POF3-521)

Appears in the scientific report 2018

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Database coverage:
; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; IF < 5 ; JCR ; PubMed Central ; Science Citation Index Expanded ; Web of Science Core Collection

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