TY  - JOUR
AU  - Raab, Nicolas
AU  - Schmidt, D. O.
AU  - Du, Hongchu
AU  - Kruth, Maximilian
AU  - Simon, U.
AU  - Dittmann, Regina
TI  - Au Nanoparticles as Template for Defect Formation in Memristive SrTiO3 Thin Films
JO  - Nanomaterials
VL  - 8
IS  - 11
SN  - 2079-4991
CY  - Basel
PB  - MDPI
M1  - FZJ-2018-05987
SP  - 869
PY  - 2018
AB  - 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
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000451316100004
DO  - DOI:10.3390/nano8110869
UR  - https://juser.fz-juelich.de/record/856620
ER  -