Thermally driven elastic weakening of crystals

TL;DR

This paper presents an analytical model linking thermal softening of crystals to bond length and strength, validated by reproducing experimental data across various materials without additional parameters.

Contribution

It introduces a direct analytical approach connecting thermal elastic weakening to atomic bond properties, avoiding reliance on classical thermodynamics parameters.

Findings

The model accurately reproduces experimental data for multiple materials.

Elastic softening correlates with bond length and strength changes.

Validation across diverse crystals supports the model's general applicability.

Abstract

An analytical solution has been developed clarifying that the thermally driven elastic softening of crystals can be directly related to the length and strength of the representative bonds of the crystal and to the response of the bonding identities to the change of temperature. Reproduction of the experimental results Ag, Au, MgO, Mg2SO4, Al2O3, and KCl derived mean atomic cohesive energy of the specimen may evidence the validity of the proposed approach without involving parameters using in classical thermodynamics.