A new approach to an estimation of strain distribution in a lattice with point defects using IR spectroscopy has been theoretically proposed and experimentally confirmed. The interpretation of experimental data is based on the assumption that the spectral band broadenings caused by strain and by other factors are mutually independent, the band shift being linearly dependent on the strain. In this case, the problem of determination of strain distribution reduces to an integral equation for the distribution density. Distribution functions calculated from the spectra for homogeneous carbonates Fe2+zCa1-zCO3 (z<0.15) are in agreement with theoretical ones calculated in the framework of elasticity theory.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry