MOSSBAUER STUDY OF THE CU0.6MN0.4FE2-XALXO4 SYSTEM

The crystal structure and the magnetic properties of the Cu0.6Mn0.4Fe2 -xAlxO4 system have been investigated by means of X-ray diffractometry and Mossbauer spectroscopy, The crystal structure has been found to b e a cubic spinel phase throughout the entire composition range. The de pendence of the Mossbauer parameters on the Al concentration is discus sed, and the cation distributions are presented. The linewidth at the A-site increases linearly with Al concentration. This is attributed to the difference in the supertransferred hyperfine field contributions from the neighboring B-site cations.