Results 241 to 250 of about 477,147 (274)

Local behaviour of negative thermal expansion materials

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2006
EXAFS can represent a powerful probe of the local behaviour of negative thermal expansion (NTE) materials, thanks to the possibility of measuring the expansion of selected inter-atomic bonds and the perpendicular relative atomic displacements. The effectiveness of EXAFS for NTE studies is illustrated by a comparison of results recently obtained on ...
Fornasini, Paolo, Dalba, Giuseppe, Grisenti, Rolly, Purans, Juris, Vaccari, Marco, F. Rocca, Sanson, Andrea   +6 more
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Black phosphorene exhibiting negative thermal expansion and negative linear compressibility

Journal of Physics: Condensed Matter, 2019
Positive expansion on heating, and positive contraction on hydrostatic compression are our general understanding. Actually, the abnormal negative thermal expansion (NTE) or negative linear compressibility (NLC) behavior is permissible, but exists in very few materials.
Lei Wang, Cong Wang, Ying Chen
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Negative thermal expansion properties of Cu1.5Mg0.5V2O7

Ceramics International, 2019
Abstract Cu1.5Mg0.5V2O7 was prepared by a solid state method. Its phase, microstructure, thermal expansion property, and Raman spectra were analyzed in detail. Results show that Cu1.5Mg0.5V2O7 maintains a monoclinic crystal structure and exhibits an excellent linear negative thermal-expansion property with coefficient of thermal expansion of −8.72 ...
Hui Wang, Mengjie Yang, Mingju Chao, Juan Guo, Xinbo Tang, Yajie Jiao, Erjun Liang   +6 more
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Negative thermal expansion structures constructed from positive thermal expansion trusses

Journal of Materials Science, 2011
The negative thermal expansivity of a type of space frame structure is investigated herein. On the basis of space frame structure consisting of tetrahedral representative volume elements, a volumetric thermal strain, and a volumetric coefficient of thermal expansion (CTE) models are developed in this article for a special category of tetrahedron that ...
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Anomalous negative thermal expansion of CeInCu2

Physica B: Condensed Matter, 1993
Abstract The coefficients of linear thermal expansion, α(T), of the heavy-fermion compound CeInCu2 and its non-heavy analog LaInCu2 have been measured at low temperatures (0.3 ...
A. de Visser, K. Bakker, J. Pierre
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Enhanced Negative Thermal Expansion in Lu2W3O12

Journal of Solid State Chemistry, 1998
Abstract Negative thermal expansion in the Sc 2 W 3 O 12 family has been pushed to much more pronounced values by substituting a large cation for Sc. X-ray diffraction measurements from 127 to 627°C give a linear thermal expansion coefficient of −6.8×10 −6 /°C for Lu 2 W 3 O 12 compared to −2.2×10 −6 /°C for Sc 2 W 3 O 12 . Negative thermal expansion
P.M. Forster, A. Yokochi, A.W. Sleight
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Negative thermal expansion ceramics: A review

Materials Science and Engineering, 1987
Abstract The literature was searched to identify ceramics which were reported to have negative coefficients of thermal expansion (CTEs). Even though the CTE is an inherent thermophysical property of a material, the observed CTEs were found to depend on the sample preparation techniques, and the experimental data showed hysteresis and scatter ...
Chong N. Chu, Nannaji Saka, Nam P. Suh
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Negative thermal expansion property of CuMoO4

Optik, 2018
Abstract The triclinic copper (II) molybdate (α-CuMoO4) was synthesized by a solid state method and its negative thermal expansion (NTE) was systematically studied. The results show that α-CuMoO4 exhibits non-linearly NTE and the coefficient of thermal expansion (CTE) is −4.40 × 10−6/K, when the temperature ranges from room temperature (RT) to 390 K.
Shuangshuang Wei, Xuhui Kong, Hui Wang, Yanchao Mao, Mingju Chao, Juan Guo, Erjun Liang   +6 more
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Negative thermal expansion and oxygen-redox electrochemistry

Nature
Structural disorder within materials gives rise to fascinating phenomena, attributed to the intricate interplay of their thermodynamic and electrochemical properties1,2. Oxygen-redox (OR) electrochemistry offers a breakthrough in capacity limits, while inducing structural disorder with reduced electrochemical reversibility3-5.
Bao Qiu, Yuhuan Zhou, Haoyan Liang, Minghao Zhang, Kexin Gu, Tao Zeng, Zhou Zhou, Wen Wen, Ping Miao, Lunhua He, Yinguo Xiao, Sven Burke, Zhaoping Liu, Ying Shirley Meng   +13 more
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Negative thermal expansion materials

Journal of Thermal Analysis and Calorimetry, 2009
Michael B. Jakubinek, Catherine A. Whitman, Mary Anne White   +2 more
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