FREQUENCY-DEPENDENCE OF MN2-SPIN-RESONANCE SPECTRA IN THE ULTRA-HIGH-FREQUENCY BAND( ION ELECTRON)

Low-frequency measurements for extracting hyperfine structure (HFS) pa rameters directly from the experimental ESR spectra of glasses are des cribed. Glass of molar composition BaO-P2O5 with 0.2 wt% Mn2O3 was use d. The spectra were recorded at room temperature in the UHF band at va rious frequencies (of 530 to 950 MHz). The HFS parameter A(0) was dete rmined using the frequency dependence of the spectra.