# Interconnection of point defect parameters in solids with bulk properties: Application to diamond

## TL;DR

This paper demonstrates that the ratio of defect entropy to enthalpy for vacancy formation in diamond aligns with a decades-old model linking defect parameters to bulk elastic properties, extending its relevance to superconductors and glasses.

## Contribution

It applies a longstanding defect-bulk property model to diamond, showing its validity and broad applicability across different material classes.

## Key findings

- The defect entropy and enthalpy ratio in diamond matches the model's predictions.
- The model successfully relates defect parameters to bulk elastic and expansivity data.
- The approach is applicable to high-temperature superconductors and glass-forming liquids.

## Abstract

We show that the values of the defect entropy and the defect enthalpy for the vacancy formation in diamond, have a ratio which is comparable to the one predicted by a model suggested four decades ago. This model, which interconnects the formation Gibbs energy with the bulk elastic and expansivity data, has been also recently found of value in high $T_c$-superconductors as well as in glass-forming liquids.