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@ARTICLE{Nagarajan:49733,
author = {Nagarajan, V. and Aggarwal, S. and Gruverman, A. and
Ramesh, R. and Waser, R.},
title = {{N}anoscale polarization relaxation in a polycrystalline
ferroelectric thin film: role of local environments},
journal = {Applied physics letters},
volume = {86},
issn = {0003-6951},
address = {Melville, NY},
publisher = {American Institute of Physics},
reportid = {PreJuSER-49733},
pages = {262910},
year = {2005},
note = {Record converted from VDB: 12.11.2012},
abstract = {In this letter, we report on the study of nanoscale
polarization relaxation phenomena in polycrystalline
PbZr0.4Ti0.6O3 films. Piezoresponse force microscopy (PFM)
images of the as-grown sample reveal grains with a range of
contrast, from fully white to gray to fully black. It is
shown that this local change in the contrast (magnitude) of
the piezoresponse from grain to grain can be attributed to
the crystallographic orientation within each grain.
PFM-based relaxation experiments show that the rate of
relaxation is different for each grain, furthermore it is
strongly dependent on the tilt of individual
crystallographic orientation with respect to the polar axis.
Strongly tilted away nonpolar axis grains show a much
stronger decay of the polarization compared to polar
axis-oriented grains. Therefore, for an ensemble of grains
under a common top electrode, the relaxation events would
first take place in grains, which are nonpolar axis
oriented. (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:000230090000049},
doi = {10.1063/1.1977183},
url = {https://juser.fz-juelich.de/record/49733},
}