Temperature dependence of hydrogen local mode frequencies in the ordering bcc metal hydrides

TL;DR

This paper proposes a simple physical model explaining how local mode frequencies in ordering bcc metal hydrides depend on temperature, with calculations performed specifically for vanadium deuterides, and suggests broader applicability to hydrogen motion in metal lattices.

Contribution

The paper introduces a new physical model that explains the temperature dependence of hydrogen local mode frequencies in bcc metal hydrides, validated through calculations for vanadium deuterides.

Findings

Model successfully explains experimental temperature dependence

Calculations performed for vanadium deuterides

Applicable to other hydrogen-in-metal phenomena

Abstract

A simple physical conception explaining the experimentally observed temperature dependence of the local mode frequencies in the ordering metal hydrides is proposed. Calculations are performed for bcc vanadium deuterides. The model can be applied to other physical phenomena which are related to the hydrogen motion in metal lattices.