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Negative thermal expansion materials: technological key for control of thermal expansion
Science and Technology of Advanced Materials, 2012 Most materials expand upon heating. However, although rare, some materials contract upon heating. Such negative thermal expansion (NTE) materials have enormous industrial merit because they can control the thermal expansion of materials. Recent progress in materials research enables us to obtain materials exhibiting negative coefficients of linear ...
Koshi Takenaka
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Efficient Calculation of the Negative Thermal Expansion in ZrW2O8. [PDF]
Front Chem, 2018 We present a study of the origin of the negative thermal expansion (NTE) on ZrW2O8 by combining an efficient approach for computing the dynamical matrix with the Lanczos algorithm for generating the phonon density of states in the quasi-harmonic approximation.
Vila FD, Hayashi ST, Rehr JJ.
europepmc +6 more sources
Progress of Research in Negative Thermal Expansion Materials: Paradigm Shift in the Control of Thermal Expansion. [PDF]
Front Chem, 2018 To meet strong demands for the control of thermal expansion necessary because of the advanced development of industrial technology, widely various giant negative thermal expansion (NTE) materials have been developed during the last decade. Discovery of large isotropic NTE in ZrW2O8 has greatly advanced research on NTE deriving from its characteristic ...
Takenaka K.
europepmc +6 more sources
Isotropic Negative Thermal Expansion Metamaterials [PDF]
ACS Applied Materials & Interfaces, 2016 Negative thermal expansion materials are important and desirable in science and engineering applications. However, natural materials with isotropic negative thermal expansion are rare and usually unsatisfied in performance. Here, we propose a novel method to achieve negative thermal expansion via a metamaterial approach. The metamaterial is constructed
Ji Zhou
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Negative thermal expansion in solid deuteromethane [PDF]
Low Temperature Physics, 2020 The thermal expansion at constant pressure of solid CD4 III is calculated for the low-temperature region where only the rotational tunneling modes are essential and the effect of phonons and librons can be neglected. It is found that in mK region there is a giant peak of the negative thermal expansion.
Freiman, Yu. A. +2 more
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Negative thermal expansion in ZnF2 [PDF]
Applied Physics Letters, 2011 We have investigated temperature dependence of the lattice parameters and the unit cell volume of ZnF2 by neutron diffraction and have discovered negative thermal expansion (NTE) at low temperature. To understand why this simple compound exhibits NTE we performed first principle calculations.
Chatterji, Tapan +2 more
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Negative thermal expansion materials † [PDF]
Journal of the Chemical Society, Dalton Transactions, 1999 The ZrW2O8 family of materials has been shown to exhibit the unusual property of negative thermal expansion over a wide temperature range. α-ZrW2O8 itself shows negative thermal expansion from 2 K to 1443 K with a coefficient of thermal expansion α1 of -9.1×10-6 K-1 between 2 and 300 K. This behaviour can be related to the unusual structure of these
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Journal of Physics: Condensed Matter, 2005 There has been substantial renewed interest in negative thermal expansion following the discovery that cubic ZrW2O8 contracts over a temperature range in excess of 1000 K. Substances of many different kinds show negative thermal expansion, especially at low temperatures.
Barrera, GD +3 more
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EXAFS and negative thermal expansion in CdTe
Journal of Physics: Conference Series, 2009 CdTe is affected by a low-temperature negative thermal expansion (NTE) of the lattice parameter, whose strength and temperature interval are intermediate between those of the iso-structural crystals Ge and CuCl. EXAFS measurements have been performed on CdTe from 19 to 300 K.
N. Abd El All +7 more
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Zentropy Theory for Positive and Negative Thermal Expansion
Journal of Phase Equilibria and Diffusion, 2022 It has been observed in both natural and man-made materials that volume sometimes decreases with increasing temperature. Though mechanistic understanding has been gained for some individual materials, a general answer to the question "Why does volume sometimes decrease with the increase of temperature?" remains lacking.
Zi-Kui Liu, Yi Wang, Shun-Li Shang
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