Uniaxial negative thermal expansion in the mullite- and borax-type PbAlBO4 polymorphs
Uniaxial negative thermal expansion in the mullite- and borax-type PbAlBO4 polymorphs
复制标题
莫来石型和硼砂型 PbAlBO4 多晶型物的单轴负热膨胀
DOI:
10.1007/s10853-019-04013-6
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发表时间:
2020
影响因子:
4.5
通讯作者:
T.M. Gesing
中科院分区:
文献类型:
--
作者:
M. Gogolin;M.M. Murshed;M. Ende;R. Miletich;T.M. Gesing
This study presents an investigation on the axial negative thermal expansion of α-PbAlBO4and β-PbAlBO4. Polycrystalline and single-crystal samples were prepared by solid-state synthesis method, characterized by temperature- and pressure-dependent X-ray and neutron diffraction experiments. The axial negative linear compressibility (NLC) is known for the α-polymorph, although structurally different the β-polymorph also shows similar NLC phenomenon. The lattice thermal expansion was described using the first-order Grüneisen equation of state, where the vibrational energy was calculated using the Debye–Einstein-Anharmonicity model. The density functional theory (DFT)-based phonon density of states and Raman spectra helped to choose the characteristic frequency to model the metric parameters. Lattice thermal expansion was additionally simulated in the quasi-harmonic approximation using the plane-wave DFT approach at the PBEsol level. The apparent departure of the quasi-harmonic approximation model has been discussed in terms of associated thermodynamic functions. The interplay between the topology-induced negative cross-compliance and anisotropic Grüneisen parameter has been identified as the driving force for the axial negative linear compressibility and axial negative thermal expansion.
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影响因子:
5.4
作者:
M. Murshed;T. Gesing
通讯作者:
M. Murshed;T. Gesing
DOI:
10.1515/zkri-2014-1785
发表时间:
2014
期刊:
Zeitschrift für Kristallographie - Crystalline Materials
影响因子:
--
作者:
K. Hoffmann;M.M. Murshed;R.X. Fischer;H. Schneider;Th.M. Gesing
通讯作者:
Th.M. Gesing
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
M. Murshed;R. Fischer;T. Gesing
通讯作者:
T. Gesing
DOI:
10.1002/zaac.201700330
发表时间:
2018
期刊:
Zeitschrift für anorganische und allgemeine Chemie
影响因子:
--
作者:
M. Murshed;P. Zhao;A. Huq;T. Gesing
通讯作者:
T. Gesing
DOI:
10.1107/s0567740878011504
发表时间:
1978-01-01
期刊:
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE
影响因子:
--
作者:
LEVY, HA;LISENSKY, GC
通讯作者:
LISENSKY, GC