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@ARTICLE{Tsuruoka:824447,
author = {Tsuruoka, Tohru and Valov, Ilia and Mannequin, Cedric and
Hasegawa, Tsuyoshi and Waser, R. and Aono, Masakazu},
title = {{H}umidity effects on the redox reactions and ionic
transport in a {C}u/{T}a$_{2}$ {O}$_{5}$ /{P}t atomic switch
structure},
journal = {Japanese journal of applied physics},
volume = {55},
number = {6S1},
issn = {1347-4065},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2016-07036},
pages = {06GJ09 -},
year = {2016},
abstract = {Redox reactions at the Cu/Ta$_{2}$ O$_{5}$ interface and
subsequent Cu ion transport in a Ta2O5 film have been
investigated by means of cyclic voltammetry (CV)
measurements. Under positive bias to the Cu electrode, Cu is
preferentially oxidized to Cu2+ and then to Cu+. Subsequent
negative bias causes a reduction of the oxidized Cu ions at
the interface. It was found that CV curves change
drastically with varied relative humidity levels from 5 to
85\%. At higher humidity levels, the ion concentrations and
diffusion coefficients, estimated from the CV curves,
suggest increased redox reaction rates and a significant
contribution of proton conduction to the ionic transport.
The results indicate that the redox reactions of moisture
are rate-limiting and highlight the importance of water
uptake by the matrix oxide film in understanding and
controlling the resistive switching behavior of oxide-based
atomic switches.},
cin = {PGI-7},
ddc = {530},
cid = {I:(DE-Juel1)PGI-7-20110106},
pnm = {521 - Controlling Electron Charge-Based Phenomena
(POF3-521)},
pid = {G:(DE-HGF)POF3-521},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000377484100050},
doi = {10.7567/JJAP.55.06GJ09},
url = {https://juser.fz-juelich.de/record/824447},
}