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@ARTICLE{Schwarzkopf:154114,
author = {Schwarzkopf, J. and Braun, D. and Schmidbauer, M. and Duk,
A. and Wördenweber, R.},
title = {{F}erroelectric domain structure of anisotropically
strained {N}a{N}b{O}3 epitaxial thin films},
journal = {Journal of applied physics},
volume = {115},
number = {20},
issn = {1089-7550},
address = {Melville, NY},
publisher = {American Institute of Physics},
reportid = {FZJ-2014-03512},
pages = {204105 -},
year = {2014},
abstract = {NaNbO3 thin films have been grown under anisotropic biaxial
strain on several oxide substrates byliquid-delivery spin
metalorganic chemical vapor deposition. Compressive lattice
strain of differentmagnitude, induced by the deposition of
NaNbO3 films with varying film thickness on NdGaO3single
crystalline substrates, leads to modifications of film
orientation and phase symmetry, whichare similar to the
phase transitions in Pb-containing oxides near the
morphotropic phase boundary.Piezoresponse force microscopy
measurements exhibit large out-of-plane polarization
components,but no distinctive domain structure, while C-V
measurements indicate relaxor properties in thesefilms. When
tensile strain is provoked by the epitaxial growth on
DyScO3, TbScO3, and GdScO3single crystalline substrates,
NaNbO3 films behave rather like a normal ferroelectric.
Theapplication of these rare-earth scandate substrates
yields well-ordered ferroelectric stripe domains ofthe type
a1/a2 with coherent domain walls aligned along the [001]
substrate direction as long as thefilms are fully strained.
With increasing plastic lattice relaxation, initially, a 2D
domain pattern withstill exclusively in-plane electric
polarization, and finally, domains with in-plane and
out-of-planepolar components evolve.},
cin = {PGI-8 / JARA-FIT},
ddc = {530},
cid = {I:(DE-Juel1)PGI-8-20110106 / $I:(DE-82)080009_20140620$},
pnm = {423 - Sensorics and bioinspired systems (POF2-423)},
pid = {G:(DE-HGF)POF2-423},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000337143500069},
doi = {10.1063/1.4876906},
url = {https://juser.fz-juelich.de/record/154114},
}