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Thermal expansion

About: Thermal expansion is a research topic. Over the lifetime, 21040 publications have been published within this topic receiving 349407 citations. The topic is also known as: heat expansion.


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Journal ArticleDOI
TL;DR: In this paper, a procedure has been presented for calibration of the differential dilatometric measurement signal (length change as a function of temperature), both upon heating and cooling, using a sapphire specimen for which recommended dilatation data are available.

76 citations

Journal ArticleDOI
TL;DR: In this article, the elastic properties and thermal expansion behavior of lead-free halide double perovskite, Cs2AgBiBr6, were studied first with the aid of first principles calculations, which were followed by experimental characterization.

76 citations

Journal ArticleDOI
TL;DR: In this article, the structural evolution of the orthorhombic phase with space group Pbnm and the rhombohedral phase with R 3 ¯ c structure of LaFeO3 is reported in terms of lattice parameters, thermal expansion coefficients, atomic positions, octahedral rotations and polyhedral volumes.

76 citations

Journal ArticleDOI
TL;DR: In this article, an analytical expression for the relationship between the thermal expansion coefficient and melting temperature coinciding with the Lindemann melting rule has been derived, and a correlation between the melting temperature and shear modulus has been discovered and explained within the framework of the same approach.
Abstract: An interpretation of a long-standing problem—the Lindemann melting rule—has been suggested within the framework of the interstitialcy theory. Melting is considered to be due to the rapid generation of thermodynamically equilibrium defects—dumbbell interstitials, which drastically decrease the shear modulus at the melting point. An analytical expression for the relationship between the thermal expansion coefficient and melting temperature coinciding with the Lindemann melting rule has been derived. The obtained results agree with available data on elemental substances. A correlation between the melting temperature and shear modulus has been discovered and explained within the framework of the same approach.

76 citations

Journal ArticleDOI
TL;DR: In this paper, a classical potential consisting of both intramolecular and intermolecular (Buckingham and Coulombic) terms was used to investigate the dynamics of liquid nitromethane at various temperatures and pressures.
Abstract: A classical potential consisting of both intramolecular and intermolecular (Buckingham and Coulombic) terms that was developed for the simulation of crystalline nitromethane has been used to investigate the dynamics of liquid nitromethane at various temperatures and pressures. The validation of the proposed potential model was done for a large number of static and dynamic properties including the heat of vaporization, the variation of density with temperature and pressure, the thermal expansion coefficient, the self-diffusion coefficients, the viscosity coefficient, the dielectric constant, the bulk modulus, and the variation of vibrational frequencies with pressure. The analyses performed using constant pressure and temperature and constant volume and temperature molecular dynamics simulations show that the potential accurately reproduces the structural properties of liquid nitromethane at ambient pressure in the temperature range 260−374 K as well as the compression effects up to 14.2 GPa.

75 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023603
20221,249
2021683
2020742
2019759
2018767