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@ARTICLE{Wondraczek:409183,
author = {Wondraczek, Lothar and Pan, Zhiwen and Palenta, Theresia
and Erlebach, Andreas and Misture, Scott T. and Sierka,
Marek and Micoulaut, Matthieu and Hoppe, Uwe and Deubener,
Joachim and Greaves, G. Neville},
title = {{K}inetics of {D}ecelerated {M}elting},
journal = {Advanced science},
volume = {5},
number = {5},
issn = {2198-3844},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {PUBDB-2018-03293},
pages = {1700850},
year = {2018},
abstract = {Melting presents one of the most prominent phenomena in
condensed matter science. Its microscopic understanding,
however, is still fragmented, ranging from simplistic theory
to the observation of melting point depressions. Here, a
multimethod experimental approach is combined with
computational simulation to study the microscopic mechanism
of melting between these two extremes. Crystalline
structures are exploited in which melting occurs into a
metastable liquid close to its glass transition temperature.
The associated sluggish dynamics concur with real‐time
observation of homogeneous melting. In‐depth information
on the structural signature is obtained from various
independent spectroscopic and scattering methods, revealing
a step‐wise nature of the transition before reaching the
liquid state. A kinetic model is derived in which the first
reaction step is promoted by local instability events, and
the second is driven by diffusive mobility. Computational
simulation provides further confirmation for the sequential
reaction steps and for the details of the associated
structural dynamics. The successful quantitative modeling of
the low‐temperature decelerated melting of zeolite
crystals, reconciling homogeneous with heterogeneous
processes, should serve as a platform for understanding the
inherent instability of other zeolitic structures, as well
as the prolific and more complex nanoporous metal–organic
frameworks.},
cin = {DOOR},
ddc = {500},
cid = {I:(DE-H253)HAS-User-20120731},
pnm = {6G3 - PETRA III (POF3-622) / FS-Proposal: I-20140514
(I-20140514)},
pid = {G:(DE-HGF)POF3-6G3 / G:(DE-H253)I-20140514},
experiment = {EXP:(DE-H253)P-P02.1-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29876211},
UT = {WOS:000435852800014},
doi = {10.1002/advs.201700850},
url = {https://bib-pubdb1.desy.de/record/409183},
}