VelCrys: Interactive web-based application to compute acoustic wave velocity in crystals and its magnetic corrections

TL;DR

VelCrys is an interactive web tool that calculates acoustic wave velocities in crystals, including magnetic corrections, enabling detailed analysis of wave behavior under magnetic fields for various crystal symmetries.

Contribution

The paper introduces VelCrys, a novel web-based application that computes acoustic wave velocities and magnetic corrections in crystals, enhancing analysis capabilities.

Findings

Magnetic corrections show complex directional dependence.

Field dependence aligns with the Simon effect.

Application to different crystals demonstrates versatility.

Abstract

We present VelCrys, a web-based interactive tool, that allows to perform further post-processing of the elastic tensor in order to compute and plot the group velocity of the acoustic waves for any crystal symmetry. We also implemented the calculation of effective magnetic corrections to the elastic tensor and corresponding fractional change in group velocity under a magnetic field. We apply it to dry sandstone, cubic CoPt and hcp Co to show some of the program features. In the analysis of magnetic corrections, we find complex landscapes of fractional change in group velocity as a function of ray direction, as well as a field dependence consistent with Simon effect.