Atomistic modeling of the low-temperature atom-beam deposition of magnesium fluoride.
Atomistic modeling of the low-temperature atom-beam deposition of magnesium fluoride.
复制标题
氟化镁低温原子束沉积的原子模拟
DOI:
10.1021/ic501499k
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发表时间:
2015
影响因子:
4.6
通讯作者:
M. Jansen
中科院分区:
文献类型:
--
作者:
S. Neelamraju;J. C. Schön;M. Jansen
We model the deposition and growth of MgF2on a sapphire substrate as it occurs in a low-temperature atom-beam-deposition experiment. In the experiment, an (X-ray) amorphous film of MgF2is obtained at low temperatures of 170–180 K, and upon heating, this transforms to the expected rutile phase via the CaCl2-type structure. We confirm this from our simulations and propose a mechanism for this transformation. The growth process is analyzed as a function of the synthesis parameters, which include the substrate temperature, deposition rate of clusters, and types of clusters deposited. Upon annealing an initially amorphous deposit, we observe the formation of two competing nanocrystalline modifications during this process, which exhibit the CaCl2and CdI2structure types, respectively. We argue that this joint growth of the two nanocrystalline polymorphs stabilizes the kinetically unstable CaCl2-type structure on the macroscopic level long enough to be observed in the experiment.
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DOI:
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发表时间:
1995
期刊:
影响因子:
--
作者:
J. C. Schön;M. Jansen
通讯作者:
M. Jansen
DOI:
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发表时间:
2010
期刊:
影响因子:
--
作者:
Nicola Totó;C. Schön;M. Jansen
通讯作者:
M. Jansen
DOI:
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发表时间:
2003
期刊:
影响因子:
--
作者:
D. Fischer;M. Jansen
通讯作者:
M. Jansen
DOI:
10.1063/1.4765700
发表时间:
2012-11
期刊:
The Journal of chemical physics
影响因子:
--
作者:
S. Neelamraju;Andreas Bach;J. C. Schön;Daniel Fischer;M. Jansen
通讯作者:
S. Neelamraju;Andreas Bach;J. C. Schön;Daniel Fischer;M. Jansen
DOI:
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发表时间:
2004
期刊:
影响因子:
--
作者:
Dan E. Fischer;Z. Cancarevic;J. Schön;M. Jansen
通讯作者:
M. Jansen