Elastic Constants of Diamond

Elastic constants of diamond from molecular dynamics simulations.

The elastic constants of diamond between 100 and 1100 K have been calculated for the first time using molecular dynamics and the second-generation, reactive empirical bond-order potential (REBO). This version of the REBO potential was used because it was redesigned to be able to model the elastic properties of diamond and graphite at 0 K while maintaining its original capabilities. The independ...

Elastic constants and structural properties of nanometre-thick diamond- like carbon films

Carbon coatings of thickness down to 2 nm are needed to increase the storage density in magnetic hard disks and reach the 100-Gbitsyinch target. We show that the combination of surface Brillouin scattering, X-ray reflectivity and Raman spectroscopy 2 measurements allow us to measure the mechanical and structural properties of ultra-thin tetrahedral amorphous carbon films. Densities up to 2.8 gy...

Elastic constants of natural quartz.

The elastic constants of a natural-quartz sphere using resonance-ultrasound spectroscopy (RUS) are measured. The measurements of the near-traction-free vibrational frequencies of the sphere are matched with the predicted frequencies from the dynamic theory of elasticity, with optimized estimates for the elastic constants driving the differences between these sets of frequencies to a minimal val...

Martensitic Transformation and Elastic Constants

Pressure Derivatives of Elastic Constants of Single

present success was attained by making various technical developments, such as a liquid-solid hybrid system and indium bond between sample and buffer-rod. Analytical procedures were also developed both in required corrections for apparent travel times, and in formulation of pressure effect on elasticity. A distinct shear softening was found in MgAl2O4, and was predicted to occur in MgO beyond 3...