On the switching between negative and positive thermal expansion in framework materials
Materials Research Letters, 2019 The control of thermal expansion represents a challenge in materials design. This work shows that the length of the lattice parameter is a key element for controlling thermal expansion. By varying the lattice parameter through external pressure, chemical
Andrea Sanson
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Optimized negative thermal expansion property in low-cost Mg2P2O7-based bulk material
Results in Physics, 2022 Negative thermal expansion (NTE) is an intriguing physical phenomenon, which is of great significance for the high precision application. In this work, we have realized to broaden the NTE temperature zone in Mg2P2O7-based bulk material by doping Cu atom ...
Yige Du +8 more
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A novel design of mechanical metamaterial incorporating multiple negative indexes
Materials Research Express, 2023 Mechanical metamaterials that combine multiple negative properties are rare, but have great appeal for applications in multipurpose devices. Herein, a novel metamaterial incorporating negative Poisson’s ratio, negative compressibility, and negative ...
Yu Yao +3 more
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Negative thermal expansion in the plateau state of a magnetically-frustrated spinel [PDF]
, 2019 We report on negative thermal expansion (NTE) in the high-field, half-magnetization plateau phase of the frustrated magnetic insulator CdCr2O4. Using dilatometry, we precisely map the phase diagram at fields of up to 30T, and identify a strong NTE ...
Bobel, A. +8 more
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Mechanisms and Materials for NTE
Frontiers in Chemistry, 2018 Negative thermal expansion (NTE) upon heating is an unusual property but is observed in many materials over varying ranges of temperature. A brief review of mechanisms for NTE and prominent materials will be presented here.
J. Paul Attfield
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Modeling Wear and Friction Regimes on Ceramic Materials with Positive and Negative Thermal Expansion
Lubricants, 2023 Computer modeling of rubbing between two surfaces with microasperities capable of expanding or contracting under conditions of frictional heating (i.e., possessing either positive and negative coefficient of thermal expansion (CTE)) allowed for the ...
Aleksandr S. Grigoriev +3 more
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Fabrication and characterization of ZrW2O8-Cf/E51 negative thermal expansion composite
Materials Research Express, 2020 ZrW _2 O _8 -C _f /E51 composite with a negative Coefficient of Thermal Expansion (CTE) was fabricated by a method combining mechanical stirring with ultrasonic vibration, then microstructures and properties of the composites were analyzed and summarized
Luyan Ju +5 more
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Which phonons contribute most to negative thermal expansion in ScF3?
APL Materials, 2023 Using calculations of the phonon distribution in ScF3 across the whole of reciprocal space, we show that the important phonons for the negative thermal expansion in this material are those associated with the rigid unit modes (RUMs) and associated quasi ...
Martin T. Dove +4 more
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Quantum effects in the radial thermal expansion of bundles of single-walled carbon nanotubes doped with 4He [PDF]
, 2010 The radial thermal expansion (ar) of bundles of single-walled carbon nanotubes saturated with 4He impurities to the molar concentration 9.4% has been investigated in the interval 2.5-9.5 K using the dilatometric method.
A. V. Dolbin +9 more
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Negative Thermal Expansion Properties of Sm0.85Sr0.15MnO3-δ
Journal of Composites Science, 2022 A novel negative thermal expansion (NTE) material composed of Sm0.85Sr0.15MnO3-δ was synthesized using the solid-state method. By allowing Sr2+ to partially replace Sm3+ in SmMnO3, the ceramic material Sm0.85Sr0.15MnO3-δ exhibits NTE properties between 360K and 873K, and its average negative thermal expansion coefficient was −10.08 × 10−6/K.
Yucheng Li +3 more
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