Journal ArticleDOI
Negative Thermal Expansion in a Large Molybdate and Tungstate Family
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TLDR
Negative thermal expansion has been discovered in a very large family of oxides represented by the formula A{sub 2}M{sub 3}O{sub 12} where the A and M cations are coordinated by oxygen octahedrally and tetrahedraally, respectively as discussed by the authors.About:
This article is published in Journal of Solid State Chemistry.The article was published on 1997-11-01. It has received 323 citations till now. The article focuses on the topics: Negative thermal expansion.read more
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Negative thermal expansion materials
TL;DR: In this article, the authors give an overview of some of the physical phenomena that can give rise to negative thermal expansion and some of their unusual structural properties, and discuss the structural properties of such materials.
Journal ArticleDOI
Negative thermal expansion
TL;DR: In this article, the underlying thermodynamics, emphasizing the roles of thermal stress and elasticity, are reviewed, and vibrational and non-vibrational mechanisms operating on the atomic scale that are responsible for negative expansion in a wide range of materials.
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Negative thermal expansion: a review
TL;DR: In this paper, the state of the art in NTE solids is reviewed, and understanding of the driving mechanisms of the effect is considered along with experimental and theoretical evidence, and various categories of solids with NTE are explored, and experimental methods for their experimental characterisation and applications for such solids are proposed.
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Negative thermal expansion in Sc2(WO4)3
TL;DR: Rietveld refinement as a function of temperature suggests that the intrinsic negative thermal expansion can be related to transverse vibrations of bridging oxygen atoms in the structure, which leads to coupled tilting of the quasi-rigid framework polyhedra and causes the structure to become more dense with increasing temperature.
Journal ArticleDOI
Two Decades of Negative Thermal Expansion Research: Where Do We Stand?
TL;DR: NTE materials that contract due to transverse atomic vibrations are reviewed, their potential for use in controlled thermal expansion composites, and known problems that could interfere with such applications are reviewed.
References
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Journal ArticleDOI
Negative Thermal Expansion from 0.3 to 1050 Kelvin in ZrW2O8
TL;DR: Negative thermal expansion was found for ZrW 2 O 8 from 0.3 kelvin to its decomposition temperature of about 1050 klvin by using both neutron and x-ray diffraction data as mentioned in this paper.
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Negative Thermal Expansion in ZrW2O8 and HfW2O8
TL;DR: In this article, the authors used high-resolution neutron powder diffraction data taken at 14 temperatures from 0.3 to 693 K to study the structural properties of ZrW2O8 and HfW2Os8.
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Negative Thermal Expansion and Phase Transitions in the ZrV2-xPxO7 Series
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The α—β transition in the cristobalite phases of SiO2 and AIPO4 I. X-ray studies
A. J. Leadbetter,A. F. Wright +1 more
TL;DR: In this article, the α-β transition in the cristobalite phases of SiO2 and AlPO4 has been studied using X-ray powder diffraction and it is concluded that the phase coexistence in the bulk sample occurs because different crystallites undergo the transition at different temperatures.