Results 41 to 50 of about 480,384 (278)

A systematic study of the negative thermal expansion in zinc-blende and diamond-like semiconductors

New Journal of Physics, 2019
Upon heating, almost all zinc-blende (ZB) and diamond-like semiconductors undergo volume contraction at low temperature, i.e. negative thermal expansion (NTE), instead of commonly expected expansion.
Kaike Yang, Jin Xiao, Jun-Wei Luo, Shu-Shen Li, Su-Huai Wei, Hui-Xiong Deng   +5 more
doaj   +1 more source

Soft Manifold Dynamics Behind Negative Thermal Expansion

, 2008
Minimal models are developed to examine the origin of large negative thermal expansion (NTE) in under-constrained systems. The dynamics of these models reveals how underconstraint can organize a thermodynamically extensive manifold of low-energy modes ...
A. P. Ramirez, J. A. Rosen, J. N. Hancock, S. T. Thornton, Z. Schlesinger   +4 more
core   +1 more source

Understanding the negative thermal expansion in planar graphite–metal composites [PDF]

, 2018
The addition of graphitic fibers and flakes as fillers is commonly used to control the thermal expansion of metals. Sintered metal matrix composites with a planar distribution of graphite flakes show a low or negative thermal expansion coefficient ...
Oddone, Valerio, Reich, Stephanie, Wimpory, Robert C.   +2 more
core   +1 more source

Phonon anharmonicity and negative thermal expansion in SnSe

, 2016
The anharmonic phonon properties of SnSe in the Pnma phase were investigated with a combination of experiments and first-principles simulations. Using inelastic neutron scattering (INS) and nuclear resonant inelastic X-ray scattering (NRIXS), we have ...
Abernathy, Douglas L., Bansal, Dipanshu, Delaire, Olivier, Hong, Jiawang, Hu, Michael Y., Li, Chen W., May, Andrew F., Porter, Wallace   +7 more
core   +2 more sources

Thermal Expansion in 3d-Metal Prussian Blue Analogs - A Survey Study

, 2011
We present a comprehensive study of the structural properties and the thermal expansion behavior of 17 different Prussian Blue Analogs (PBAs) with compositions MII3[(M')III(CN)6]2.nH2O and MII2[FeII(CN)6].nH2O, where MII = Mn, Fe, Co, Ni, Cu and Zn, (M ...
Avila, Chapman, Collins, Darrick Williams, Ferrari, Gomez, Goodwin, Goodwin, Govindaraj, Gravereau, Guedel, Heinz Nakotte, Irving, Jennifer Summerhill, Juszczyk, Kennedy, Korthuis, Lightfoot, Luke L. Daemen, Malecki, Margadonna, Mary, Matsuda, Monika Hartl, Mullica, Phillips, Qi, Ratuszna, Rigamonti, Rigamonti, Roy, Salvador, Shannon, Sleight, Sourav Adak, Tucker, van Bever, Welche, Wilson, Xu   +39 more
core   +1 more source

Kondo-induced giant isotropic negative thermal expansion

, 2020
Negative thermal expansion is an unusual phenomenon appearing in only a handful of materials, but pursuit and mastery of the phenomenon holds great promise for applications across disciplines and industries.
Abeykoon, M., Ablett, J., Dzero, M., Hancock, J. N., Hiraoka, N., Imura, K., Ishii, H., Jarrige, I., Mazzone, D. G., Rueff, J. P., Suzuki, H. S., Yamaoka, H.   +11 more
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Negative thermal expansion of MgB$_{2}$ in the superconducting state and anomalous behavior of the bulk Gr\"uneisen function [PDF]

, 2005
The thermal expansion coefficient $\alpha$ of MgB$_2$ is revealed to change from positive to negative on cooling through the superconducting transition temperature $T_c$.
D. G. Hinks, G. D. Barrera, J. D. Jorgensen, J. J. Neumeier, J. S. Schilling, J. S. Slusky, M. Debessai, M. Kund, N. A. Abdullaev, P. W. Barnes, T. Tomita, W. Cheney   +11 more
core   +1 more source

Controllable negative thermal expansion in NaZn13-type La(Fe, Co, Al)13 compounds

AIP Advances, 2020
Control of negative thermal expansion (NTE) is of great importance for various applications of NTE materials. Here, we report an effective way to control both the coefficient of thermal expansion (CTE) and NTE temperature-window in NaZn13-type La(Fe, Co,
Wentao Sun, Hua Zhang, Wen Li, Rongjin Huang, Yuqiang Zhao, Wei Wang, Laifeng Li   +6 more
doaj   +1 more source

Thermal contraction in silicon nanowires at low temperatures

, 2010
The thermal expansion effect of silicon nanowires (SiNW) in [100], [110] and [111] directions with different sizes is theoretically investigated. At low temperatures, all SiNW studied exhibit thermal contraction effect due to the lowest energy of the ...
Baowen Li, Chung, Cui, Cui, Cui, Duan, Gale, Gudiksen, Holmes, Huang, Huang, Huang, Jian-Sheng Wang, Jiang, Jiang, Jiang, Jin-Wu Jiang, Krishnan, Ma, Mahan, Markussen, Meyer, Morales, OuYang, Pan, Peelaers, Popov, Schelling, T.Vo, Tersoff, Thonhauser, Tian, Timko, Treacy, Wong, Wu, Xiang, Zhang, Zhang, Zhao   +39 more
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Holographic Thermal Helicity [PDF]

, 2014
We study the thermal helicity, defined in arXiv:1211.3850, of a conformal field theory with anomalies in the context of AdS$_{2n+1}$/CFT$_{2n}$. To do so, we consider large charged rotating AdS black holes in the Einstein-Maxwell-Chern-Simons theory with
Azeyanagi, Tatsuo, Loganayagam, R., Ng, Gim Seng, Rodriguez, Maria J.   +3 more
core   +2 more sources