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@ARTICLE{Herpers:186433,
author = {Herpers, Anja and O’Shea, Kerry J. and MacLaren, Donald
A. and Noyong, Michael and Rösgen, Bernd and Simon, Ulrich
and Dittmann, Regina},
title = {{C}ompeting strain relaxation mechanisms in epitaxially
grown {P}r$_{0.48}${C}a$_{0.52}${M}n{O}$_{3}$ on
{S}r{T}i{O}$_{3}$},
journal = {APL materials},
volume = {2},
number = {10},
issn = {2166-532X},
address = {Melville, NY},
publisher = {AIP Publ.},
reportid = {FZJ-2015-00509},
pages = {106106},
year = {2014},
abstract = {We investigated the impact of strain relaxation on the
current transport of Pr0.48Ca0.52MnO3 (PCMO) thin films
grown epitaxially on SrTiO3 single crystals by pulsed laser
deposition. The incorporation of misfit dislocations and the
formation of cracks are identified as competing mechanisms
for the relaxation of the biaxial tensile strain. Crack
formation leads to a higher crystal quality within the
domains but the cracks disable the macroscopic charge
transport through the PCMO layer. Progressive strain
relaxation by the incorporation of misfit dislocations, on
the other hand, results in a significant decrease of the
activation energy for polaron hopping with increasing film
thickness.},
cin = {PGI-7},
ddc = {620},
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:000344588400009},
doi = {10.1063/1.4900817},
url = {https://juser.fz-juelich.de/record/186433},
}