Anelasticity of Glass: IV, Correlation of Electrical Strain with Mechanical Strain in Glass

The residual charge and anomalous absorption current reported for certain glasses can be explained by making reference to internal friction peaks caused by the stress diffusion of sodium or potassium ions. When an electrical potential gradient or “electrical stress” is applied to any of these glasses, the “induced electrical strain” is associated with the time‐consuming formation of a new equilibrium distribution of sodium ions.