Anisotropic Lattice-Dynamic Studies and Line Asymmetries in Mössbauer-Effect Doublet Spectra

Abstract

Asymmetries in the line intensities of component lines of electric-quadrupole doublets in M\"ossbauer spectra (the Karyagin effect) have been observed in linear chain-polycrystalline polymers over a wide range of temperatures. It was observed that the asymmetry increases at higher temperatures and almost disappears at low temperatures. No significant Karyagin effect has been observed for three-dimensional monomeric material.