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@ARTICLE{Meyer:45609,
author = {Meyer, R. and Liedtke, R. and Waser, R.},
title = {{O}xygen vacancy migration and time-dependent leakage
current behavior of {B}a0.3{S}r0.7{T}i{O}3 thin films},
journal = {Applied physics letters},
volume = {86},
issn = {0003-6951},
address = {Melville, NY},
publisher = {American Institute of Physics},
reportid = {PreJuSER-45609},
pages = {112904},
year = {2005},
note = {Record converted from VDB: 12.11.2012},
abstract = {The leakage current response of high-permittivity
columnar-grown (Ba,Sr)TiO3 thin films has been studied at
elevated temperatures under dc load. We observe a thermally
activated current prior to the onset of the resistance
degradation with an activation energy of E-A=1.1 eV. A point
defect model is applied to calculate the migration of
electronic and ionic defects under the dc field as well as
the current response of the system. We find that the peak in
current is not caused by a space-charge-limited transient of
oxygen vacancies, but related to a modulation of the
electronic conductivity upon oxygen vacancy redistribution.
Furthermore, we show that after the redistribution of
electronic and ionic defects, no further increase in
conductivity takes place in the simulation. (C) 2005
American Institute of Physics.},
keywords = {J (WoSType)},
cin = {IFF-IEM / CNI},
ddc = {530},
cid = {I:(DE-Juel1)VDB321 / I:(DE-Juel1)VDB381},
pnm = {Materialien, Prozesse und Bauelemente für die Mikro- und
Nanoelektronik},
pid = {G:(DE-Juel1)FUEK252},
shelfmark = {Physics, Applied},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000228050700074},
doi = {10.1063/1.1874313},
url = {https://juser.fz-juelich.de/record/45609},
}