Effects Of Phse Separation And Devitrification Processes In Oxide Glasses On Esr Spectra

The consequences of phase separation and devitrification processes for the ESR patterns of Fe3+ ions and oxygen hold centres in glassy and glassy-crystalline systems are discussed. analysis of the Fe3+ spectra by simulation (including 4th order terms) allows their model-based interpretation for homogeneous, phase-separated and devitrified samples as well. It is even possible to estimate the ratio of Fe3+ ions incorporated into the glassy matrix to those localized in the crystalline phase.