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@ARTICLE{Tabatabaei:837003,
author = {Tabatabaei, Fatemeh and Boussinot, Guillaume and Spatschek,
Robert and Apel, Markus and Brener, Efim},
title = {{P}hase field modeling of rapid crystallization in the
phase-change material {AIST}},
journal = {Applied physics / A},
volume = {122},
number = {4},
issn = {0340-3793},
address = {Berlin},
publisher = {Springer},
reportid = {FZJ-2017-06019},
pages = {045108},
year = {2017},
abstract = {We carry out phase field modeling as a continuum simulation
technique in order to study rapid crystallization processes
in the phase-change material AIST (Ag4In3Sb67Te26). In
particular, we simulate the spatio-temporal evolution of the
crystallization of a molten area of the phase-change
material embedded in a layer stack. The simulation model is
adapted to the experimental conditions used for recent
measurements of crystallization rates by a laser pulse
technique. Simulations are performed for substrate
temperatures close to the melting temperature of AIST down
to low temperatures when an amorphous state is involved. The
design of the phase field model using the thin interface
limit allows us to retrieve the two limiting regimes of
interface controlled (low temperatures) and thermal
transport controlled (high temperatures) dynamics. Our
simulations show that, generically, the crystallization
velocity presents a maximum in the intermediate regime where
both the interface mobility and the thermal transport,
through the molten area as well as through the layer stack,
are important. Simulations reveal the complex interplay of
all different contributions. This suggests that the maximum
switching velocity depends not only on material properties
but also on the precise design of the thin film structure
into which the phase-change material is embedded.},
cin = {IEK-2 / PGI-2},
ddc = {530},
cid = {I:(DE-Juel1)IEK-2-20101013 / I:(DE-Juel1)PGI-2-20110106},
pnm = {111 - Efficient and Flexible Power Plants (POF3-111)},
pid = {G:(DE-HGF)POF3-111},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000409414100029},
doi = {10.1063/1.4996429},
url = {https://juser.fz-juelich.de/record/837003},
}