MOESSBAUER INVESTIGATION OF STATIC-DISORDER CRYSTALLINE MEDIA. Ⅴ. HYPERFINE FIELDS1 DISPERSION IN STATIC-DISORDERED CRYSTALLINE MEDIA OF TETRAGONAL AND TRIGONAL IRON GERMANATES

摘要

The refined ~(57)Fe Moessbauer spectra of some static-disordered crystalline media (with melilite and Ca-gallate structure) evidenced observable electric and magnetic crystal field dispersions. The data of the crystalline hyperflne fields and their dispersion parameters were calculated using the modeling procedure given in [5]. The obtained values of the magnetic and quadrupole splitting parameters compared with the experimental data showed the possibility to predict the dispersion of the crystal fields.