Meaning of microstrain | Babel Free

Definitions

1. A strain expressed in terms of parts per million
   countable, uncountable
2. The root mean square of the variations in the lattice parameters across the individual crystallites, usually across microscopic distances, <ϵ²>^(1/2). By definition, it cannot be negative. In contrast, macrostrain refers to the overall change in the lattice parameters caused by a composition change or temperature change or pressure change.
   countable, uncountable

Examples

“The analysis of diffraction-line broadening is one of the most powerful methods to quantitatively analyze defects in crystalline materials. Values for crystallite-size and microstrain parameters can be obtained according to a variety of methods.”

“It should be noted that microstrain, which is larger at lower temperatures, is ignored in the calculation. The omission of microstrain causes the grain size to be underestimated which can be understood through Eq. 10.5.”

“Thus, a Gaussian shape for the microstrain-broadened diffraction-line profile occurs for a Gaussian microstrain distribution.”

CEFR level