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@ARTICLE{Kelly:887831,
author = {Kelly, Madeleine N. and Rheinheimer, Wolfgang and Hoffmann,
Michael J. and Rohrer, Gregory S.},
title = {{A}nti-thermal grain growth in {S}r{T}i{O}3: {C}oupled
reduction of the grain boundary energy and grain growth rate
constant},
journal = {Acta materialia},
volume = {149},
issn = {1359-6454},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2020-04457},
pages = {11 - 18},
year = {2018},
abstract = {The dihedral angles at grain boundary thermal grooves in
SrTiO3 were measured and used to determine the relative
grain boundary energy at several temperatures where the
grain growth rate constant displays anti-thermal properties
(it decreases with increasing temperature). The measurements
indicate that at temperatures in the anti-thermal region
(1390 °C–1400 °C), the average grain boundary energy
is less than at a lower temperature (1350 °C) where grain
boundaries move more rapidly. Three-dimensional electron
backscatter diffraction was used to measure the geometries
of internal triple junctions in a sample where the slow and
fast grain boundaries co-exist. Based on the dihedral angles
at triple junctions, the ratio of the energies of slow
boundaries to fast boundaries is 0.86. The results indicate
that at temperatures between 1350 °C and 1425 °C, the
higher and lower energy boundaries coexist. The coexistence
of the two boundary types in this temperature range is
likely because there is a range of grain boundary energies
and the temperature at which a boundary transforms from the
slow type to the fast type depends on its grain boundary
energy.},
cin = {IEK-1},
ddc = {670},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000430895000002},
doi = {10.1016/j.actamat.2018.02.030},
url = {https://juser.fz-juelich.de/record/887831},
}